Granted Patent
Utility
US 4,135,945 · App. 05/826,590
Pigment dispersions containing polyoxymethyleneoxazolidine biocides
Inventors:
Frederick J. Buono, William B. Woods
Patented Case
View Patent ↗
Granted: Jan 23, 1979
Filed: Aug 22, 1977
Inventors
Frederick J. Buono
William B. Woods
Assignee (at issue)
Tenneco Chemicals, 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.