Granted Patent
Utility
US 4,231,887 · App. 06/052,190
Zeolite agglomerates for detergent formulations
Inventors:
Arthur Denny, John D. Sherman
Patented Case
View Patent ↗
Granted: Nov 4, 1980
Filed: Jun 26, 1979
Inventors
Arthur Denny
John D. Sherman
Assignee (at issue)
Union Carbide 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.