Granted Patent
Utility
US 4,433,105 · App. 06/289,821
Chlorinated rubber and polyvinyl chloride composition containing the same
Inventors:
Akira Matsuda, Tetsuo Tojyo
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Aug 4, 1981
Inventors
Akira Matsuda
Tetsuo Tojyo
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.