Granted Patent
Utility
US 6,465,548 · App. 09/549,495
Stabilizer for organic polymer material and organic polymer material composition
Inventors:
Takeshi Inoue, Shoichi Horie
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Apr 14, 2000
Inventors
Takeshi Inoue
Shoichi Horie
Assignee (at issue)
Yoshitomi Fine Chemicals, Ltd.
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.