Granted Patent
Utility
US 5,621,147 · App. 08/433,967
Trifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their production
Inventors:
Osamu Yokokoji, Tamaki Simizu, Seisaku Kumai
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: May 4, 1995
Inventors
Osamu Yokokoji
Tamaki Simizu
Seisaku Kumai
Assignee (at issue)
ASAHI GLASS CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.