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:
Sep. 29, 1998
Filed:
Jan. 29, 1993
Applicant:
Inventors:
John A Costello, Annapolis, MD (US);
Harry Buhay, Allison Park, PA (US);
Richard R Papania, Pittsburgh, PA (US);
Prosenjit Rai-Choudhury, Export, PA (US);
Kenneth J Petrosky, Severna Park, MD (US);
Gene A Madia, Plum Borough, PA (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257678 ; 257684 ; 257700 ; 257701 ; 257702 ; 257690 ; 257688 ; 257712 ;
Abstract
A heat dissipating module and package for power microwave transistors and method of making same that includes a substrate having a thick copper layer bonded to a ceramic core which is thereto subjected to high processing temperatures.