Granted Patent
Utility
US 4,332,950 · App. 06/239,356
Thiazolidine-substituted phenyl sulfonic acids
Inventors:
Charles A. Kelly, Frank A. Meneghini
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Mar 2, 1981
Inventors
Charles A. Kelly
Frank A. Meneghini
Assignee (at issue)
Polaroid 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.