Granted Patent
Utility
US 5,811,594 · App. 08/793,703
Methyl-end-capped alkyl and/or alkenyl polyglycol ethers
Inventors:
Karl Schmid, Joaquim Bigorra Llosas
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Mar 7, 1997
Inventors
Karl Schmid
Joaquim Bigorra Llosas
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.