Granted Patent
Utility
US 5,006,284 · App. 07/366,819
Granules of alkyl esters containing hydroxyphenyl groups
Inventor:
Michael Gahan
Patented Case
View Patent ↗
Granted: Apr 9, 1991
Filed: Jun 14, 1989
Inventor
Michael Gahan
Assignee (at issue)
Ciba-Geigy
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.