Granted Patent
Utility
US 4,943,664 · App. 07/410,783
Surfactant products containing 1,3,4-butanetriol
Inventors:
Lowell R. Anderson, Mohamed M. Hashem, Robert B. Login
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Sep 22, 1989
Inventors
Lowell R. Anderson
Mohamed M. Hashem
Robert B. Login
Assignee (at issue)
GAF Chemicals 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.