Granted Patent
Utility
US 4,808,513 · App. 07/035,413
Method of developing a high contrast, positive photoresist using a developer containing alkanolamine
Inventors:
Richard M. Lazarus, Kenneth L. Bell, Carla M. Bauer
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Apr 6, 1987
Inventors
Richard M. Lazarus
Kenneth L. Bell
Carla M. Bauer
Assignee (at issue)
Morton Thiokol
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.