Granted Patent
Utility
US 4,187,239 · App. 05/926,516
Method for preparing organotin compounds
Inventor:
Robert D. Dworkin
Patented Case
View Patent ↗
Granted: Feb 5, 1980
Filed: Jul 20, 1978
Inventor
Robert D. Dworkin
Assignee (at issue)
M&T Chemicals, Inc.
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.