Granted Patent
Utility
US 6,140,421 · App. 09/404,025
Phenol-novolacs with improved optical properties
Inventor:
Arthur H. Gerber
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Sep 23, 1999
Inventor
Arthur H. Gerber
Assignee (at issue)
Borden Chemical, 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.