Granted Patent
Utility
US 4,371,608 · App. 06/275,816
Resist system having increased light response
Inventor:
Amitabha Das
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Jun 22, 1981
Inventor
Amitabha Das
Assignee (at issue)
Ionomet 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.