Granted Patent
Utility
US 4,551,539 · App. 06/661,641
Substituted 2,5-dimethylpyrroles
Inventors:
Ingenuin Hechenbleikner, William P. Enlow
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Oct 17, 1984
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.