Granted Patent
Utility
US 4,056,503 · App. 05/733,632
Incorporation of multifunctional monomers (PETA, TMPTA, and HDODA) in vinyl-acrylic emulsion polymers
Inventors:
Thomas M. Powanda, Ralph F. Patella, Joseph A. Vona, Charles A. DeFazio
Patented Case
View Patent ↗
Granted: Nov 1, 1977
Filed: Oct 18, 1976
Inventors
Thomas M. Powanda
Ralph F. Patella
Joseph A. Vona
Charles A. DeFazio
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.