Granted Patent
Utility
US 4,649,167 · App. 06/799,532
Sulfone-containing hindered amines
Inventors:
Ludwig K. Huber, James L. Reilly
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Nov 14, 1985
Inventors
Ludwig K. Huber
James L. Reilly
Assignee (at issue)
Pennwalt 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.