Granted Patent
Utility
US 4,283,321 · App. 06/081,367
Alkyl aryl ethyleneoxy sulfonate surfactants for vinyl acetate polymerization
Inventors:
Paritosh M. Chakrabarti, Darrell G. Kirchner
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Oct 3, 1979
Inventors
Paritosh M. Chakrabarti
Darrell G. Kirchner
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.