Granted Patent
Utility
US 4,227,980 · App. 05/941,760
Photoreactive coating compositions based on urethane modified acrylates
Inventors:
Siegfried A. Pregitzer, Jay K. Laufer, John Marino, James W. Hancock
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Sep 13, 1978
Inventors
Siegfried A. Pregitzer
Jay K. Laufer
John Marino
James W. Hancock
Assignee (at issue)
Whittaker Corporation
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.