Granted Patent
Utility
US 4,501,827 · App. 06/564,195
Glass-reinforced polymer composition comprising 4-methyl-1-pentene polymer in combination with a graft modified acid polymer of 4-methyl-1-pentene polymer
Inventors:
Riichiro Nagano, Hiroshi Kiga, Tadao Iwata
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Dec 22, 1983
Inventors
Riichiro Nagano
Hiroshi Kiga
Tadao Iwata
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.