It is said that hydrocarbon oil is a national invention patent. Is it true?/You don't say. Where was it invented?
Yes, hydrocarbon oil was awarded the national invention patent in February 20 10. The patent number is ZL.200610031990.0, which was inquired on the website of the State Patent Office. Hydrocarbon oil was invented in Changde, Hunan Province, and developed by Mr. Gong Kun, deputy director of New Energy Research Institute of hunan university of arts and science Institute of Chemistry and Chemical Technology!