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:
May. 06, 2014
Filed:
Sep. 08, 2006
Fumihiro Hayashi, Osaka, JP;
Shinichi Kanazawa, Osaka, JP;
Atsushi Uno, Osaka, JP;
Akira Udagawa, Gunma, JP;
Shigetoshi Ikeda, Gunma, JP;
Toshiaki Yagi, Gunma, JP;
Fumihiro Hayashi, Osaka, JP;
Shinichi Kanazawa, Osaka, JP;
Atsushi Uno, Osaka, JP;
Akira Udagawa, Gunma, JP;
Shigetoshi Ikeda, Gunma, JP;
Toshiaki Yagi, Gunma, JP;
Sumitomo Electric Fine Polymer, Inc., Osaka, JP;
Abstract
A tetrafluoroethylene resin molded article obtained by fusing PTFE by heating a tetrafluoroethylene resin by heating, and then executing a gradual cooling or a cooling including a holding at a temperature equal to or higher than 313° C. and lower than 321° C. for 10 minutes or longer, and having, when heated to 365° C., then cooled to 245° C. with a rate of −1° C./min, and then heated to 365° C. with a rate of 10° C./min, a heat of fusion which, within a range from 296 to 343° C., is equal to or larger than 32 J/g and less than 47.8 J/g, a porous article obtained by expanding the molded article, and a composite article, a filter, an impact deformation absorber and a sealing material utilizing the molded article or the porous article.