Granted Patent
Utility
US 6,140,423 · App. 09/218,140
Chlorinated vinyl chloride resin composition
Inventors:
Takeyuki Suzuki, Toshio Okuhara, Minoru Isshiki
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Dec 22, 1998
Inventors
Takeyuki Suzuki
Toshio Okuhara
Minoru Isshiki
Assignee (at issue)
KANEKA 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.