IP Library › Granted Patent US 4,597,085
Granted Patent Utility
US 4,597,085 · App. 06/532,629

Double-channel planar heterostructure semiconductor laser

Inventors: Ikuo Mito, Kohroh Kobayashi, Tetsuhiko Ikegami
Patented Case View Patent ↗
Granted: Jun 24, 1986 Filed: Sep 15, 1983
Inventors
Ikuo Mito
Kohroh Kobayashi
Tetsuhiko Ikegami
Assignees (at issue)
NEC CORPORATION
Nippon Telegraph and Telephone Public 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 4,597,085
App. No.
06/532,629
Filed
1983-09-15
Granted
1986-06-24
Kind
A