Granted Patent
Utility
US 5,164,422 · App. 07/796,956
Manufacture of polyisocyanate prepolymers using ethylene glycol and cellular foams therefrom
Inventors:
Michael E. Londrigan, Scott C. Snider, Kenneth G. Trout
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Nov 25, 1991
Inventors
Michael E. Londrigan
Scott C. Snider
Kenneth G. Trout
Assignee (at issue)
Celotex 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.