Granted Patent
Utility
US 6,096,477 · App. 09/251,900
Fractionated novolak resin from cresol-formaldehyde reaction mixture and photoresist composition therefrom
Inventors:
M. Dalil Rahman, Ping-Hung Lu, Michelle Cook
Patented Case
View Patent ↗
Granted: Aug 1, 2000
Filed: Feb 19, 1999
Inventors
M. Dalil Rahman
Ping-Hung Lu
Michelle Cook
Assignee (at issue)
Clariant Finance (BVI) Limited
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.