Granted Patent
Utility
US 6,147,690 · App. 09/020,171
Pixel shading system
Inventor:
Michael A. Cosman
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Feb 6, 1998
Inventor
Michael A. Cosman
Assignee (at issue)
Evans & Sutherland Computer 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.