Granted Patent
Utility
US 4,640,004 · App. 06/600,163
Method and structure for inhibiting dopant out-diffusion
Inventors:
Michael E. Thomas, Madhukar B. Vora, Ashok K. Kapoor
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Apr 13, 1984
Inventors
Michael E. Thomas
Madhukar B. Vora
Ashok K. Kapoor
Assignee (at issue)
Fairchild Camera & Instrument Corp.
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.