Hohhot
China
2
2023-04-27
The entities that hold a legal rights for patent applications filed by inventor CHEN Chen:
Chen CHEN from Hohhot, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for preparing tar extract having aromatic characteristics by using discarded cigarette butt, and use thereof in cigarette
#2 | 2022-12-29METHOD FOR PREPARING TAR EXTRACT FROM DISCARDED CIGARETTE BUTTS AND APPLICATION THEREOF IN CIGARETTES
5612816 ⎘