Granted Patent
Utility
US 4,290,976 · App. 05/707,576
Process for the preparation of phenol-free phosphites
Inventors:
Ingenuin Hechenbleikner, James D. Klicker, William P. Enlow
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Jul 22, 1976
Inventors
Ingenuin Hechenbleikner
James D. Klicker
William P. Enlow
Assignee (at issue)
Borg-Warner 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.