Granted Patent
Utility
US 6,479,559 · App. 10/082,138
Chlorinated vinyl chloride resin composition for siding extrusion molding and siding molded article using the same
Inventors:
Atsushi Takai, Toshio Okuhara, Kazumasa Yamane
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Feb 26, 2002
Inventors
Atsushi Takai
Toshio Okuhara
Kazumasa Yamane
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.