Granted Patent
Utility
US 4,307,201 · App. 06/160,502
Highly adsorptive macroporous polymers
Inventors:
Richard Won, Robert Zajac
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jun 18, 1980
Inventors
Richard Won
Robert Zajac
Assignee (at issue)
Diamond Shamrock 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.