Granted Patent
Utility
US 5,428,110 · App. 08/170,996
Process for producing propylene copolymer
Inventors:
Yumito Uehara, Hideshige Kato, Hidehito Kato, Kouzou Kitayama
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Dec 21, 1993
Inventors
Yumito Uehara
Hideshige Kato
Hidehito Kato
Kouzou Kitayama
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.