Granted Patent
Utility
US 4,540,826 · App. 06/522,774
Process for preparing olefinic aldehydes
Inventors:
Dennis S. Banasiak, Jim D. Byers
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Aug 12, 1983
Inventors
Dennis S. Banasiak
Jim D. Byers
Assignee (at issue)
Phillips Petroleum Company
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.