Granted Patent
Utility
US 4,546,166 · App. 06/663,115
Sealant composition
Inventors:
Masahiro Niinomi, Yukihiro Okubo, Yoshinori Igarashi, Masashi Yoshinari
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Oct 22, 1984
Inventors
Masahiro Niinomi
Yukihiro Okubo
Yoshinori Igarashi
Masashi Yoshinari
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.