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:
Nov. 12, 2002
Filed:
Nov. 02, 2000
Applicant:
Inventors:
Wendy Fong, Alhambra, CA (US);
Naoki Ota, Stevenson Ranch, CA (US);
Hisashi Tsukamoto, Saugus, CA (US);
Assignee:
Quallion LLC, Sylmar, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/100 ;
U.S. Cl.
CPC ...
G01N 3/100 ;
Abstract
A method and apparatus suitable for use in high volume production for determining leakage from a nominally sealed product container, e.g., a battery case. The method and apparatus first functions to analytically test for leakage of a particular component of interest, e.g., a liquid electrolyte comprising a mixture of ethylene carbonate (EC) and methyl-ethyl carbonate (MEC) in a lithium-ion battery. A second gas leakage test can then be performed.