Granted Patent
Utility
US 4,339,555 · App. 06/200,579
Process for the production of a polyamide base resin composition
Inventors:
Yasuhiro Ohmura, Seiichiro Maruyama, Hiroyuki Kawasaki
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Oct 24, 1980
Inventors
Yasuhiro Ohmura
Seiichiro Maruyama
Hiroyuki Kawasaki
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.