Granted Patent
Utility
US 4,514,577 · App. 06/434,827
Chemical process for preparing di-ortho benzyl phenols
Inventors:
Allen H. Filbey, Henry G. Braxton, Jr., Bernard R. Meltsner
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Oct 15, 1982
Inventors
Allen H. Filbey
Henry G. Braxton, Jr.
Bernard R. Meltsner
Assignee (at issue)
Ethyl 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.