Granted Patent
Utility
US 4,390,734 · App. 06/339,234
Process for producing propylene glycol monoalkyl ethers from acetaldehyde, an alkanol and syngas using a new catalyst system
Inventor:
John F. Knifton
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Jan 13, 1982
Inventor
John F. Knifton
Assignee (at issue)
Texaco 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.