Granted Patent
Utility
US 4,895,927 · App. 07/172,878
Water soluble, self-crosslinking, polymeric condensation product of amino (meth) acrylate and phosponic acid ester
Inventors:
Simpert Ludemann, Michael Bernheim
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Mar 25, 1988
Inventors
Simpert Ludemann
Michael Bernheim
Assignee (at issue)
Ciba-Geigy
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.