Granted Patent
Utility
US 4,275,041 · App. 06/188,805
Process for manufacturing a stable titanyl sulfate solution
Inventors:
Joseph Waldman, Edgar Klein, Achim Kulling, Joseph A. Rahm
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Sep 19, 1980
Inventors
Joseph Waldman
Edgar Klein
Achim Kulling
Joseph A. Rahm
Assignee (at issue)
NL Industries, 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.