Granted Patent
Utility
US 4,454,092 · App. 06/405,549
Method of producing partially crosslinked rubber-resin composition
Inventors:
Shizuo Shimizu, Shunji Abe, Akira Matsuda
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Aug 5, 1982
Inventors
Shizuo Shimizu
Shunji Abe
Akira Matsuda
Assignee (at issue)
Mitsui Petrochemical 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.