Granted Patent
Utility
US 4,894,399 · App. 07/202,724
Light-stabilized polymer microparticles containing epoxy groups
Inventors:
Jean Rody, Mario Slongo, Franciszek Sitek, Andreas Valet
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Jun 3, 1988
Inventors
Jean Rody
Mario Slongo
Franciszek Sitek
Andreas Valet
Assignee (at issue)
Ciba-Geigy
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.