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. 15, 1981
Filed:
Dec. 21, 1979
Applicant:
Inventor:
Kenneth A Ports, Indialantic, FL (US);
Assignee:
Harris Corporation, Melbourne, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
29574 ; 29583 ; 29591 ; 2504 / ; 3241 / ;
Abstract
Integrated circuits in dice on a wafer are qualified by providing two sets of conductors connected to each die by fusible elements, biasing the dice using said conductors during exposure to a qualifying environment, testing the fusible elements, removing the conductors and testing the circuits. Where the environment is gamma radiation, the fusible elements are tested before annealing of radiation damage and the circuits are tested before and after annealing.