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:
Oct. 18, 2016
Filed:
Jun. 15, 2011
Takeshi Yasooka, Yamato, JP;
Toshihiko Kamiya, Yokohama, JP;
Itaru Tamura, Nagaokakyo, JP;
Akira Suzuka, Nagaokakyo, JP;
Shunji Noda, Zama, JP;
Takuya Takatsuka, Zama, JP;
Takeshi Yasooka, Yamato, JP;
Toshihiko Kamiya, Yokohama, JP;
Itaru Tamura, Nagaokakyo, JP;
Akira Suzuka, Nagaokakyo, JP;
Shunji Noda, Zama, JP;
Takuya Takatsuka, Zama, JP;
NISSAN MOTOR CO., LTD., Yokohama-Shi, JP;
Abstract
A soft packaged sealed battery is contained in an airtight container. The airtight container is decompressed and images of the surface shape of the sealed battery in the airtight container before and after decompression are captured by a CCD camera or the like. Whether or not airtightness of the sealed battery is maintained is determined based on a change in the captured images, e.g. a change in the surface shape appearing as luminance differences of pixels. By this determination method, highly accurate airtightness determination is realized by eliminating the influence of invisible fine creases on a sealed battery surface.