Granted Patent
Utility
US 4,568,351 · App. 06/611,323
Use of certain esters as pH regulators in textile finishing processes
Inventors:
Jose M. Palleiro Cardona, Karl-Heinz Weible
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: May 17, 1984
Inventors
Jose M. Palleiro Cardona
Karl-Heinz Weible
Assignee (at issue)
Sandoz AG
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.