Granted Patent
Utility
US 5,223,628 · App. 07/790,131
Process for making high solids fabric softeners using low amounts of solvents and no side reactions
Inventor:
David E. Whittlinger
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Nov 7, 1991
Inventor
David E. Whittlinger
Assignee (at issue)
Sherex Chemical Co., 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.