Granted Patent
Utility
US 4,426,503 · App. 06/330,504
Derivatives of aminoalkyl alkylene ureas and their use as wet adhesion promoters
Inventors:
Joseph M. Sandri, John W. Calentine, Seymour M. Linder, Yves J. Billioux
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Dec 14, 1981
Inventors
Joseph M. Sandri
John W. Calentine
Seymour M. Linder
Yves J. Billioux
Assignee (at issue)
Alcolac, 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.