Granted Patent
Utility
US 4,906,299 · App. 07/250,529
Lubricating insolubilizer for paper coating composition
Inventor:
Louis R. Dragner
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Sep 29, 1988
Inventor
Louis R. Dragner
Assignee (at issue)
Sequa 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.