Granted Patent
Utility
US 6,235,217 · App. 09/510,880
Monocarboxylic acid based antifreeze composition
Inventors:
David E. Turcotte, Arnold L. Coffey, Jr., Alden W. Olsen, Michael A. Dituro, Carl R. Stephens
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Feb 23, 2000
Inventors
David E. Turcotte
Arnold L. Coffey, Jr.
Alden W. Olsen
Michael A. Dituro
Carl R. Stephens
Assignee (at issue)
Ashland, 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.