Granted Patent
Utility
US 4,661,544 · App. 06/811,210
Homogeneous stabilizer compositions for vinyl halide polymers
Inventor:
Robert E. Quinn
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Dec 20, 1985
Inventor
Robert E. Quinn
Assignee (at issue)
The Lubrizol 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.