Granted Patent
Utility
US 5,344,984 · App. 08/045,284
"Method for preparing ""twin-tailed"" polyoxyalkylene tertiary amines"
Inventors:
John F. Knifton, Carter G. Naylor
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Apr 8, 1993
Inventors
John F. Knifton
Carter G. Naylor
Assignee (at issue)
Texaco Chemical Inc.
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.