Granted Patent
Utility
US 4,806,575 · App. 06/932,246
Prevention of outgassing in polyvinylsiloxane elastomers by the use of finely divided platinum black
Inventors:
Duncan E. Waller, Laurie D. Lovshe
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Nov 19, 1986
Inventors
Duncan E. Waller
Laurie D. Lovshe
Assignee (at issue)
Kerr Manufacturing Company
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.