Granted Patent
Utility
US 5,512,620 · App. 08/238,288
Benzoxazolyl optical brightners in and for thermoplastic compositions
Inventors:
Henricus H. M. van Hout, James Franklin Hoover, Karl H. Roell, Augustina M. Willemsen
Patented Case
View Patent ↗
Granted: Apr 30, 1996
Filed: May 5, 1994
Inventors
Henricus H. M. van Hout
James Franklin Hoover
Karl H. Roell
Augustina M. Willemsen
Assignee (at issue)
General Electric Company
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.