Granted Patent
Utility
US 5,152,929 · App. 07/595,155
Thio(cyclo)alkanepolycarboxylic acids containing heterocyclic substituents
Inventors:
Robert L. Bentley, Michael P. Savage, Kenneth W. Shelton
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Oct 10, 1990
Inventors
Robert L. Bentley
Michael P. Savage
Kenneth W. Shelton
Assignee (at issue)
Ciba-Geigy
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.