Granted Patent
Utility
US 6,384,149 · App. 09/740,365
Process for production of chlorinated polyvinyl chloride resin
Inventors:
Tadashi Tadokoro, Takeyuki Suzuki, Minoru Isshiki
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Dec 19, 2000
Inventors
Tadashi Tadokoro
Takeyuki Suzuki
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.