Patent situation of ceramic manufacturing method and product invention

Patent is the main factor to promote the transformation of China's ceramic industry

Dr. Angus Madison, a western economic historian, believes that China's GDP accounted for more than 21% of the global share for more than 2,111 years after the beginning of the western calendar year, ranking first in the world for a long time. In this period of history, the scale of production and export of only one industrial sector in China has always ranked first in the world, and that is ceramics. After the Opium War, with the decline of national fortune, China's ceramic industry gradually declined.

in p>1998, China once again became the largest producer of ceramics in the world. In the past nine years, China's ceramic industry has continued to consolidate its dominant position in the world, with the total output accounting for more than 2/3 of the world. Among them, the output of daily-use ceramics, building ceramics and sanitary ware accounts for more than 71%, 51% and 33% of the world respectively, and the output of ceramic products used in China's energy, electrician, IT, steel, aerospace, chemistry, medicine and other industrial sectors is also increasing greatly. The export volume and income of China's ceramic industry have been ranked first in the world for many years, and five industrial belts have been formed, namely, Foshan, Jingdezhen, Zibo, Jiajiang and Dehua. In addition, the ceramic industry in Jiangsu, Hebei, Henan, Liaoning and other places has also shown a rapid rise. Ceramic towns in some regions are also developing rapidly. For example, the output of ceramics in Jinjiang, Fujian Province has accounted for about 1/3 of the province, with an annual output value of more than 7 billion yuan, and the development speed is almost equal to Foshan.

It is noteworthy that the disorderly competition in China's ceramic industry is very serious, which has threatened the healthy development of the whole industry. For example, due to the malicious price reduction of enterprises in foreign markets, the added value of China's export products is low, and anti-dumping lawsuits have been encountered in Europe, the United States, India, Mexico, the Philippines, Egypt and many other regions, resulting in heavy losses. In China, there are many repeated construction projects, and it is common for enterprises to copy, counterfeit and drive down prices. Local protectionism has also hindered the expansion of large enterprises. Dragged by the big environment, China's ceramic industry will suffer the industry-wide loss for the first time in 2117, and its global competitiveness will be negatively affected.

in order to change the situation of disorderly competition, the industry has made some attempts. For example, in September, 2113, the Professional Committee of Daily Ceramics of China Ceramic Industry Association was established in Zibo. Its chairman is the chairman of Huaguang Ceramics Co., Ltd., and other members are the chairmen or general managers of dozens of large ceramic enterprises in China. The committee tries to create a price alliance and avoid vicious competition among big enterprises. These measures have a certain effect on promoting the healthy development of the industry.

however, judging from the current situation, China's ceramic industry may go through several years of adjustment, and finally turn to a new pattern in which a few oligopolistic enterprises with market appeal and control monopolize the national and even global markets. In this transformation process, patent will become one of the main tools for enterprise competition and market reshuffle. Patents play a role in two main ways: first, patent disputes make a large number of small and medium-sized enterprises withdraw from the market. Second, the combination of patent deployment competition and patents has led to the elimination of more large and medium-sized enterprises in Lian Heng. Judging from the current situation, these two trends have emerged.

Patent disputes in ceramic industry have a tendency to continue to spread

With the increasing market competition, hundreds of enterprises in China have been involved in various patent disputes. For example, in 2112, Foshan court heard the case that Foshan Shiwan Town Ceramic Industry Research Institute sued Foshan Shunde Chencun Town Dengzhou Ketai Industrial Co., Ltd. for infringing the "patent for utility model of exhaust ceramic tile mold". Foshan is the largest ceramic industrial base in the world, especially the export volume of building ceramics accounts for 3/4 of the country. This patent dispute has had a great social impact in Foshan and increased the patent risk coefficient in the development of enterprises. Since then, patent cases have occurred frequently in Foshan. For example, in 2114, Foshan Sino-French ruled that Foshan Hemei Ceramics Co., Ltd. infringed the design patent of "Brick (Dream Marseille)" of Foshan Asgard Ceramics Co., Ltd. In 2115, Foshan Intermediate People's Court accepted the intellectual property infringement lawsuit filed by Oushennuo Ceramics Co., Ltd., and seized nearly 8 million yuan of assets of two companies in Foshan ex officio. In this case, the defendant was suspected of infringing on the production technology, production process, formula and other trade secrets of Yuhuashi ceramics, and was also suspected of infringing on the design patent.

In addition, there have been some patent dispute cases with great influence in the whole country in Foshan, such as group litigation and inter-provincial litigation. For example, in 2114, Dongpeng Ceramics Company sued more than 11 ceramic enterprises in Foshan for infringement with the invention patent of "production method of glass-ceramic composite plate", which once caused a shock in the industry. In 2115, Foshan Intermediate People's Court also tried a patent infringement dispute between Jiangsu Roman Ceramic Tile Co., Ltd. and Foshan Rodin Building Ceramics Co., Ltd. In 2116, Guangdong Higher People's Court heard a patent infringement dispute between tengxian Yazhao Titanium Dioxide Co., Ltd. and Foshan Linghai Ceramic Technology Co., Ltd. In addition to Foshan, there have been some patent disputes in other parts of Guangdong. For example, in 2115, Guangdong High Court heard a dispute over patent infringement of design between Jiangsu Roman Ceramic Tile Co., Ltd. and Guangzhou Venus Ceramic Development Co., Ltd.

as the second largest ceramic industry base in China, many patent disputes have also broken out in Fujian province. For example, in 2115, Fujian High Court tried the patent infringement dispute between Jinjiang Cizao Ruicheng Building Materials Brick Factory and Jinjiang Jincheng Ceramics Co., Ltd. In the same year, Shenyang Intermediate People's Court of Liaoning Province also heard the case of Zhou Zizhang, Quanzhou Hongli Building Materials Co., Ltd. of Fujian Province v. Cai Jianming, and Quanzhou Jinfeng Ceramic Industry Co., Ltd. of Fujian Province. Jiangsu enterprises have also initiated some patent lawsuits. For example, Yixing Baertl New Technology Components Co., Ltd. had a patent lawsuit with Yixing Guowei Ceramic Electric Appliance Co., Ltd. The latter had a patent lawsuit with Huang Yonghai, Suzhou Xinye Electronics Co., Ltd. and Qingdao Aucma Group Air Conditioner Factory.

there are also many patent lawsuits in northern China. For example, in 2112, Beijing No.1 Intermediate People's Court tried the lawsuit of utility model patent infringement between Beijing Dongtie Thermal Ceramics Co., Ltd. and Beijing Interlay Special Textile Co., Ltd. In 2113, Beijing Higher People's Court tried the patent infringement lawsuit of utility model of "all-fire-resistant fiber composite fire-proof and heat-insulating roller blind" between the latter and Beijing Xinchen Ceramic Fiber Products Company. In 2113, a ceramic technology research institute in Jinan broke out a patent infringement lawsuit with an enterprise. In 2116, Luoyang Intellectual Property Office investigated the products of Luoyang Nuojin Ceramics Co., Ltd. according to the complaint, and destroyed 23 sets and 129 products of the company that infringed others' patents on the spot.

after p>2117, the number of patents granted in China's ceramic industry will continue to increase rapidly. With a large number of patents in place, patent disputes between enterprises are expected to continue to increase. With the increasing patent risk, a large number of small and medium-sized enterprises lacking R&D and design capabilities will gradually withdraw from the market.

The invention patent deployment competition in the ceramic industry has been continuously upgraded

There are many patent documents in the ceramic industry. For example, the Ceramic Patent Database published by Foshan Intellectual Property Office contains more than 411,111 Chinese and foreign patents, including tens of thousands of domestic patents. According to the published literature, the manufacturing methods and product invention patents in China's ceramic industry are mainly distributed in the following fields:

First, general ceramic technology. For example, documents 11133181.5 and 11133179.1 relate to a ceramic and its manufacturing method. The ceramic has small size change rate, high-precision shape and size, and can give full play to the particle characteristics of inorganic functional materials. Document 12148454.6 relates to a transparent alumina ceramic product and its manufacturing method. The ceramic formula includes alumina, sintering agent, plasticizer and lubricant. The manufacturing method comprises: proportionally mixing alumina powder, sintering agent, plasticizer and lubricant; Heating and uniformly mixing to prepare thermoplastic porcelain; Thermoplastic molding; Defatted vegetable burning; High temperature sintering; It is suitable for producing high-density polycrystalline transparent alumina ceramic products and color transparent alumina ceramic products with complex shape, accurate size, compactness and light transmission. Document 93117711.7 relates to a high-strength ceramic body and its manufacturing method.

second, electrical ceramics technology. For example, document 11812497.1 relates to a ceramic membrane and its manufacturing method, a semiconductor device and a piezoelectric element. This method can improve the surface morphology of ceramic membrane. Document 12121471.5 relates to a multilayer ceramic substrate, a manufacturing method, an unsintered ceramic laminate and an electronic device, which are suitable for manufacturing ceramic components in the electronic industry. Document 12152823.3 relates to a manufacturing method of dielectric ceramic raw material powder and dielectric ceramic raw material powder, which can be used to manufacture a core jacket structure for improving the temperature stability of electrostatic capacity of laminated ceramic capacitors. Document 13111732.1 relates to a method for manufacturing a porous ceramic structure. It uses raw materials containing ceramic raw materials as the main component and pore-forming agent to manufacture a molded body, and then the obtained molded body is dried and fired into a porous ceramic structure. Document 12111987.2 relates to a ceramic electronic component and its manufacturing method. It forms a protective film obtained by dehydration and condensation of organosilicon compounds on the surface of ceramic matrix and external electrodes at the peripheral part. It can prevent the surface of electronic components from absorbing moisture and improve its operation reliability.

thirdly, laser ceramic technology. For example, document 12159468.6 relates to a ceramic condenser cavity material, a ceramic condenser cavity and a manufacturing method thereof. The light-gathering cavity material consists of alumina powder doped with activator and sintering AIDS; The activator is rare earth oxide. The condenser cavity made by it has high density, which not only maintains the electromechanical properties of alumina ceramics, but also has high reflectivity, and is suitable for manufacturing various solid-state lasers. Document 11119125.3 relates to a fiber ring Q-switched laser. It is composed of a semiconductor laser, an active fiber, a wavelength division multiplexer, a polarization controller, an optical fiber isolator and an adjustment unit, which form an all-fiber ring laser. Its innovation lies in that the above-mentioned adjusting unit only consists of a filter and piezoelectric ceramics.

fourthly, IC ceramic technology. For example, document 12137372.8 relates to a method for manufacturing a substrate material for integrated circuit packaging. It takes alumina ceramics as the substrate, and diamond films are deposited on the substrate. The manufacturing method is to grow diamond films on alumina ceramics by hot wire chemical vapor deposition, that is, tungsten wire is used as a heating source, ethanol and hydrogen are used as reactants, and diamond films are deposited on alumina ceramic substrates placed in the reaction chamber under vacuum decompression conditions.

Fifth, medical ceramic technology. For example, document 92111765.5 relates to an active fluorapatite bioceramic and its manufacturing method. It can be used to make FAP ceramic artificial bone, artificial dental appliance, etc., and it has good biocompatibility and can effectively resist the erosion of human body fluids and oral fluids. Document 11813864.1 relates to a porous artificial bone graft and its manufacturing method. The method comprises the following steps: preparing a mixture of finely divided biocompatible ceramic powder, an organic binder and a pore-forming agent in an inert liquid to form a main body, and arranging at least some of the pore-forming agents along a coaxial line; Optionally molding the obtained body; So that the pore-forming agent forms a porous structure in the main body; Heating the molded body to a temperature sufficient to shape the porous structure; Further heating the main body to eliminate the residual organic binder and pore-forming agent and melt it. Document 11126447.1 relates to an artificial stump bone end and its manufacturing and installation methods.

sixth, building ceramic technology. For example, document 13119191.3 relates to a glass-ceramic composite plate made of industrial waste residue-coal gangue and its manufacturing method. Document 94111443.5 relates to a ceramic aggregate for building and its manufacturing method. Aggregate is made by mixing silica, alumina, ferric oxide and basic oxide in a certain proportion, and then grinding, squeezing mud strips, cutting and drying, calcining, sieving and sorting. Document 94119664.X relates to a ceramic building wall product assembly and its manufacturing method and special equipment. Document 89115792.7 relates to a multifunctional porcelain-like wood-like material and its manufacturing method. Document 11114541.1 relates to a foam ceramic material for sound absorption and its manufacturing method. Document 93111411.6 relates to a manufacturing method of glass color printing wall and floor tiles. Document 12157137.6 relates to a method and equipment for manufacturing ceramic tiles and porcelain plates, and the manufactured ceramic tiles and porcelain plates.

Seventh, the technology of mechanical ceramic components. For example, document 12134779.4 relates to a constant pressure manufacturing method for ceramic rollers. In this process, the semi-dry ceramic roller blank produced in the ceramic roller blank forming process is subjected to pressure sizing by a pair of pressing rollers with semicircular groove rings, so that the overall dimensions of the ceramic roller blank are uniform.

Eighth, textile ceramics technology. For example, document 12137393.1 relates to a manufacturing method of zirconia toughened alumina ceramic textile porcelain, which includes the following steps: selecting raw materials, weighing the raw materials of each component according to the weight percentage of the raw materials, and grinding them into powder by a ball mill; Adding an adhesive, mixing and stirring to form a mixture; Forming a textile porcelain blank; Carry out appropriate finishing processing; High temperature sintering; Grinding and polishing to form the finished product of textile porcelain. Document 94112823.2 relates to a functional textile and its manufacturing method. Textiles are woven from functional viscose fiber, cotton yarn, polyester yarn or polyamide fibre yarn. Functional viscose fiber consists of functional ceramic powder and viscose; The composition and proportion of functional ceramic powder follow certain specifications. Its manufacturing method is: preparing functional ceramic powder according to the composition range; Making functional ceramic powder and viscose into viscose cotton under certain conditions; Making functional viscose fiber; Weave functional viscose fiber, cotton yarn and polyester yarn into textiles on a knitting machine.

Ninth, artificial white marble technology. For example, document 11131675.1 relates to a lightweight white marble-like building decoration material made of waste plastic ceramic powder and its manufacturing method. Through its formula and technology, it can produce white marble-like railings, bricks, tiles, floor tiles and other products.

tenth, the technology of degrading ceramic products. For example, document 11127386.1 relates to a disposable degradable tableware and its manufacturing method. The material is mainly composed of degradable main materials, adhesive, filler and isolation agent, which is suitable for manufacturing degradable ceramic products.

Eleventh, cermet reinforcement technology. For example, document 11139227.4 relates to a method for manufacturing ceramic-lined steel pipes. It sets a ceramic lining of corrosion-resistant and wear-resistant ceramics in the steel pipe. The raw materials of the lining include Al and SiO _ 2, and the manufacturing method includes baking, batching, mixing, charging and ignition sintering. It is characterized in that acid residue is dried and mixed with Al and SiO _ 2, and then reacted and sintered under the action of centrifugal force after ignition to form a dense ceramic coating on the inner wall of the steel pipe.

twelfth, lighting ceramic technology. For example, document 12129282.5 relates to a manufacturing method of luminescent ceramic products. Document 92119718.2 relates to a high-pressure discharge lamp and its manufacturing method. The lamp has a ceramic discharge vessel, and both ends of the vessel are closed with plugs. Heat of metal feed lead or its main part