Granted Patent
Utility
US 4,855,296 · App. 07/242,837
Biocidal compositions and use thereof
Inventors:
Deborah K. Donofrio, Wilson K. Whitekettle
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Sep 12, 1988
Inventors
Deborah K. Donofrio
Wilson K. Whitekettle
Assignee (at issue)
Betz Laboratories, Inc.
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.