Granted Patent
Utility
US 4,822,654 · App. 07/169,129
Novel vulcanizable rubber compositions and applications thereof
Inventors:
Yasuhiko Takemura, Shinichiro Zen, Yoshiaki Zama, Hiroji Enyo
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Mar 10, 1988
Inventors
Yasuhiko Takemura
Shinichiro Zen
Yoshiaki Zama
Hiroji Enyo
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.