Granted Patent
Utility
US 4,022,906 · App. 05/607,738
Biocidal compositions containing bicyclic polyoxymethyleneoxazolidines
Inventors:
Henri Sidi, Hilding R. Johnson
Patented Case
View Patent ↗
Granted: May 10, 1977
Filed: Aug 25, 1975
Inventors
Henri Sidi
Hilding R. Johnson
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.