Granted Patent
Utility
US 5,250,826 · App. 07/949,901
Planar HBT-FET Device
Inventors:
Mau-Chung Frank Chang, Peter M. Asbeck, Richard L. Pierson, Jr.
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Sep 23, 1992
Inventors
Mau-Chung Frank Chang
Peter M. Asbeck
Richard L. Pierson, Jr.
Assignee (at issue)
Rockwell International 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.