Granted Patent
Utility
US 6,421,096 · App. 08/765,464
Analog video chromakey mixer
Inventor:
Julien T. Nguyen
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jan 5, 1998
Inventor
Julien T. Nguyen
Assignee (at issue)
Sigma Designs, Inc.
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.