Granted Patent
Utility
US 4,340,569 · App. 06/241,180
Treatment of carbonylation residues
Inventors:
Walter Carroll DAVIDSON, Richard V. Porcelli
Patented Case
View Patent ↗
Granted: Jul 20, 1982
Filed: Mar 6, 1981
Inventors
Walter Carroll DAVIDSON
Richard V. Porcelli
Assignee (at issue)
The Halcon SD Group, 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.