Granted Patent
Utility
US 4,481,369 · App. 06/518,022
Preparation of .alpha.-keto-carboxylic acids from acyl halides
Inventor:
Joachim W. Wolfram
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: Jul 28, 1983
Inventor
Joachim W. Wolfram
Assignee (at issue)
Ethyl 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.