Granted Patent
Utility
US 4,507,489 · App. 06/416,538
Acetal esters
Inventors:
Ingenuin Hechenbleikner, William P. Enlow
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Sep 9, 1982
Inventors
Ingenuin Hechenbleikner
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.