Granted Patent
Utility
US 6,271,192 · App. 09/437,819
Associative thickener for aqueous fabric softener
Inventors:
Daniel W. Verstrat, Joseph S. Maxim, Jr., James Rosie
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Nov 10, 1999
Inventors
Daniel W. Verstrat
Joseph S. Maxim, Jr.
James Rosie
Assignee (at issue)
National Starch and Chemical Investment Holding Copporation
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.