Granted Patent
Utility
US 6,180,715 · App. 09/389,509
Aqueous solution and dispersion of an acid salt of a polyetheramine
Inventor:
Dale C. Schmidt
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Sep 3, 1999
Inventor
Dale C. Schmidt
Assignee (at issue)
THE DOW CHEMICAL 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.