Granted Patent
Utility
US 6,417,271 · App. 09/539,784
Elastomer composition
Inventors:
Hajime Nishihara, Shinichi Shibayama, Naohiko Sato
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Mar 31, 2000
Inventors
Hajime Nishihara
Shinichi Shibayama
Naohiko Sato
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.