Granted Patent
Utility
US 6,350,808 · App. 09/481,663
Dispersion powders comprising partially acetalized, water-soluble polyvinyl alcohols, the use of these, and process for their preparation
Inventors:
Ludwig Schmitz, Michael Schöttler, Robert Fuss
Patented Case
View Patent ↗
Granted: Feb 26, 2002
Filed: Jan 12, 2000
Inventors
Ludwig Schmitz
Michael Schöttler
Robert Fuss
Assignee (at issue)
Clariant Corporation
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.