Granted Patent
Utility
US 4,645,797 · App. 06/835,112
3-Methylbutene-1 polymer composition and process for its production
Inventors:
Yoshinori Suga, Eiji Tanaka, Nobuo Enokido, Yasuo Maruyama
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Feb 24, 1986
Inventors
Yoshinori Suga
Eiji Tanaka
Nobuo Enokido
Yasuo Maruyama
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.