Granted Patent
Utility
US 4,031,306 · App. 05/640,519
Polygalactomannan allyl ether compositions
Inventors:
Ronald N. DeMartino, Anthony B. Conciatori
Patented Case
View Patent ↗
Granted: Jun 21, 1977
Filed: Dec 15, 1975
Inventors
Ronald N. DeMartino
Anthony B. Conciatori
Assignee (at issue)
Celanese GmbH
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.