Granted Patent
Utility
US 4,539,348 · App. 06/691,305
Water-swellable crosslinked polymeric microgel particles and aqueous dispersions of organic film-forming resins containing the same
Inventors:
Chandrasen Gajria, Yehuda Ozari
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jan 14, 1985
Inventors
Chandrasen Gajria
Yehuda Ozari
Assignee (at issue)
Celanese GmbH
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.