Granted Patent
Utility
US 4,529,782 · App. 06/552,735
High molecular weight water soluble polymers
Inventors:
You-Ling Fan, Nan S. Chu, George L. Brode, Meyer R. Rosen
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Nov 17, 1983
Inventors
You-Ling Fan
Nan S. Chu
George L. Brode
Meyer R. Rosen
Assignee (at issue)
Union Carbide 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.