Granted Patent
Utility
US 4,725,405 · App. 07/032,058
Organosiloxane-silicate copolymer antifreeze composition with nitrate corrosion inhibitor
Inventors:
Thomas R. Cassin, Victor B. Jex, William N. Matulewicz, Dale A. McKenzie, Paul H. Mohr
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Mar 27, 1987
Inventors
Thomas R. Cassin
Victor B. Jex
William N. Matulewicz
Dale A. McKenzie
Paul H. Mohr
Assignee (at issue)
First Brands 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.