Granted Patent
Utility
US 4,840,995 · App. 07/194,893
Aromatic polyester/aromatic polycarbonate/alpha-olefin unsaturated carboxylic acid reaction product compositions
Inventors:
Mitsuhiko Tamura, Masaaki Miyamoto, Kazuo Miyamoto
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: May 17, 1988
Inventors
Mitsuhiko Tamura
Masaaki Miyamoto
Kazuo Miyamoto
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.