IP Library › Granted Patent US 4,731,339
Granted Patent Utility
US 4,731,339 · App. 06/899,574

Process for manufacturing metal-semiconductor field-effect transistors

Inventors: Frank Ryan, Man-Chung F. Chang, Dennis A. Williams, Richard P. Vahrenkamp
Patented Case View Patent ↗
Granted: Mar 15, 1988 Filed: Aug 25, 1986
Inventors
Frank Ryan
Man-Chung F. Chang
Dennis A. Williams
Richard P. Vahrenkamp
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,731,339
App. No.
06/899,574
Filed
1986-08-25
Granted
1988-03-15
Kind
A