The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1999
Filed:
Feb. 22, 1994
Applicant:
Inventors:
Chan-Chih David Chen, Emmaus, PA (US);
Jean-Marc Pierre Delavaux, Wescosville, PA (US);
Stephen Walter Granlund, Lower Macungie Township, PA (US);
Sun-Yuan Huang, Maidencreek Township, PA (US);
Khanh Cong Nguyen, Whitehall Township, PA (US);
Katherine Anne Yanushefski, Hereford, PA (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 34 ; 372 38 ;
Abstract
A laser module uses series connected thermoelectric coolers to maintain lasers at the proper operating temperature. A variable resistance associated with the thermoelectric cooler is adjusted to maintain the current through the cooler at the proper value.