Granted Patent
Utility
US 4,315,085 · App. 06/172,924
Core-shell composite polymers having high amounts of carboxylic acid units in the shell
Inventors:
Yehuda Ozari, Eugene S. Barabas
Patented Case
View Patent ↗
Granted: Feb 9, 1982
Filed: Jul 25, 1980
Inventors
Yehuda Ozari
Eugene S. Barabas
Assignee (at issue)
GAF Corporation
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.