Granted Patent
Utility
US 6,320,071 · App. 09/505,833
Production of 2-carboxyalkyl (phenyl)phosphinic acid
Inventors:
David J. Weinkauff, Frank E. Paulik
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Feb 17, 2000
Inventors
David J. Weinkauff
Frank E. Paulik
Assignee (at issue)
Soliton, 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.