Granted Patent
Utility
US 4,970,329 · App. 07/405,245
Silyl derivatives of 2-allyl phenol
Inventors:
Andrew J. Sivak, Leonard A. Cullop
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Sep 11, 1989
Inventors
Andrew J. Sivak
Leonard A. Cullop
Assignee (at issue)
Aristech Chemical Company
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.