Granted Patent
Utility
US 4,686,024 · App. 06/697,552
Novel perfluoro chemicals and polyfluorinated compounds and process for production of the same
Inventors:
Kirby V. Scherer, Jr., Taizo Ono, Kouichi Yamanouchi, Kazumasa Yokoyama
Patented Case
View Patent ↗
Granted: Aug 11, 1987
Filed: Feb 1, 1985
Inventors
Kirby V. Scherer, Jr.
Taizo Ono
Kouichi Yamanouchi
Kazumasa Yokoyama
Assignee (at issue)
Green Cross Corporation
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.