Granted Patent
Utility
US 4,453,022 · App. 06/370,204
Process for preparing nonionic surfactants-oxyalkylation with calcium and/or strontium catalysts
Inventors:
James H. McCain, Louis F. Theiling, Jr.
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Apr 21, 1982
Inventors
James H. McCain
Louis F. Theiling, Jr.
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.