Granted Patent
Utility
US 6,512,061 · App. 09/889,223
Process for producing polypropylene or propylene random copolymer
Inventors:
Masami Kimura, Takanori Nakashima, Chikashi Okayama
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Jul 13, 2001
Inventors
Masami Kimura
Takanori Nakashima
Chikashi Okayama
Assignee (at issue)
Chisso 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.