Granted Patent
Utility
US 5,128,417 · App. 07/539,296
3-methylbutene-1 polymer, composition containing said polymer, and molded articles of said composition
Inventors:
Yoshinori Suga, Eiji Tanaka, Nobuo Enokido, Yasuo Maruyama
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Jun 18, 1990
Inventors
Yoshinori Suga
Eiji Tanaka
Nobuo Enokido
Yasuo Maruyama
Assignee (at issue)
Mitsubishi Kasei 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.