Granted Patent
Utility
US 4,910,041 · App. 07/242,263
Film formation process
Inventors:
Kenji Yanagihara, Mituo Kimura, Hitoshi Chawanya, Koshi Numata
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Sep 9, 1988
Inventors
Kenji Yanagihara
Mituo Kimura
Hitoshi Chawanya
Koshi Numata
Assignee (at issue)
Japan Synthetic Rubber 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.