Granted Patent
Utility
US 4,970,288 · App. 07/411,124
Non-toxic polyester compositions made with organotin esterification catalysts
Inventors:
William A. Larkin, Emily C. Bossert, Edmund M. Gibbons
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Sep 22, 1989
Inventors
William A. Larkin
Emily C. Bossert
Edmund M. Gibbons
Assignee (at issue)
Atochem North America, 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.