Granted Patent
Utility
US 4,181,682 · App. 05/868,149
Aminated propoxylated polybutanediols
Inventors:
Lewis W. Watts, Jr., Harold G. Waddill
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: Jan 9, 1978
Inventors
Lewis W. Watts, Jr.
Harold G. Waddill
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.