Granted Patent
Utility
US 4,239,856 · App. 05/937,303
Method for preparing high-resilient flexible urethane foams
Inventor:
Richard L. Rowton
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Aug 28, 1978
Inventor
Richard L. Rowton
Assignee (at issue)
Texaco Development 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.