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:
Apr. 10, 2007
Filed:
Apr. 29, 2004
Tetsuo Yoshioka, Okazaki, JP;
Akihiko Teshigahara, Nisshin, JP;
Junji Ohara, Nisshin, JP;
Yukihiro Takeuchi, Nishikamo-gun, JP;
Toshimasa Yamamoto, Bisai, JP;
Kazuhiko Kano, Toyoake, JP;
Tetsuo Yoshioka, Okazaki, JP;
Akihiko Teshigahara, Nisshin, JP;
Junji Ohara, Nisshin, JP;
Yukihiro Takeuchi, Nishikamo-gun, JP;
Toshimasa Yamamoto, Bisai, JP;
Kazuhiko Kano, Toyoake, JP;
Denso Corporation, Kariya, JP;
Abstract
A capacitance type physical quantity sensor detects physical quantity. The sensor includes a movable portion including a movable electrode and a fixed portion including a fixed electrode. The fixed electrode includes a detection surface facing a detection surface of the movable electrode. The movable electrode is movable toward the fixed electrode in accordance with the physical quantity so that a distance between the detection surfaces is changeable. At least one of the movable and the fixed electrodes includes a groove. The groove is disposed on a top or a bottom of the one of the movable and the fixed electrodes, has a predetermined depth from the top or the bottom, and extends from the detection surface to an opposite surface.