IP Library Granted Patent US 4,619,839
Granted Patent Utility
US 4,619,839 · App. 06/680,878

Method of forming a dielectric layer on a semiconductor device

Inventor: William I. Lehrer
Patented Case View Patent ↗
Granted: Oct 28, 1986 Filed: Dec 12, 1984
Inventor
William I. Lehrer
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.

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 4,619,839
App. No.
06/680,878
Filed
1984-12-12
Granted
1986-10-28
Kind
A