Granted Patent
Utility
US 6,326,432 · App. 09/508,799
Polypropylene composition
Inventors:
Hiroyuki Fujita, Jun Saito, Yoshitoyo Yasuda, Tsutomu Ushioda, Mototake Tsutsui, Yoshiyuki Ohgi, Minoru Adachi
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Mar 17, 2000
Inventors
Hiroyuki Fujita
Jun Saito
Yoshitoyo Yasuda
Tsutomu Ushioda
Mototake Tsutsui
Yoshiyuki Ohgi
Minoru Adachi
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.