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. 07, 2009
Filed:
Jun. 23, 2005
Applicants:
Tamaki Kobayashi, Isehara, JP;
Keisuke Yamamoto, Yamato, JP;
Hisashi Sakata, Atsugi, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 9/00 (2006.01); H01J 9/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An effective voltage V' effectively applied to a gapduring an 'activation step' is controlled to a desired value. In the 'activation step', a voltage is repeatedly applied between a first electroconductive filmand a second electroconductive filmwhile controlling voltages outputted from a voltage sourceso that a value βbecomes a desired value.