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:
Jan. 24, 2017
Filed:
May. 03, 2013
Applicant:
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Inventors:
Waleed M. Said, Rockford, IL (US);
Harold J. Hansen, Hamden, CT (US);
Hamdi Kozlu, Burlington, CT (US);
Charles V. DeSantis, Somers, CT (US);
Assignee:
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/305 (2006.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2817 (2013.01); G01R 31/2801 (2013.01);
Abstract
A method includes characterizing the effects of an electric field on a first set of printed wiring boards (PWBs) by testing the first set of PWBs to generate test data, using the test data to determine a dielectric life curve of the first set of PWBs, and based on the dielectric life curve, defining a screening time and a screening voltage to screen for premature failures in a second set of PWBs due to electric fields.