Granted Patent
Utility
US 5,359,019 · App. 07/525,269
Use of polyethylenically unsaturated monomers in polymers polyol dispersants
Inventors:
John E. Hayes, Robert G. Gastinger
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: May 17, 1990
Inventors
John E. Hayes
Robert G. Gastinger
Assignee (at issue)
Arco Chemical Technology, L.P.
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.