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:
Dec. 31, 2002
Filed:
Mar. 19, 2001
Masaru Tsuchiya, Tokyo, JP;
Takashi Ito, Tokyo, JP;
Akira Shiga, Tokyo, JP;
Takao Orii, Tokyo, JP;
Hiroaki Kobayashi, Tochigi, JP;
Masamichi Shigekane, Tokyo, JP;
Akira Noda, Tochigi, JP;
Koji Mimura, Tochigi, JP;
Kao Corporation, Tokyo, JP;
Abstract
A heater comprises a cap formed by joining and fixing together curved peripheries as peripheries of two semi-elliptical heat-generator-containing sheets of generally the same shape. The heat-generator-containing sheet comprises a waterproof inner layer sheet an air-permeable sheet disposed so as to cover the entire surface of the inner layer sheet and a plurality of heat generators interposed between and held by the inner layer sheet and the air-permeable sheet which generate heat when in contact with an air. The heat generators are disposed substantially over the entire surface of the cap The heat-generator-containing sheets are joined and fixed together with the respective inner layer sheets being the inner surface. The heater realizes a simple handling when in use, a small temperature variation, and simple fabrication process.