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:
Sep. 08, 2015
Filed:
Jul. 31, 2008
Takayuki Yagi, Tokyo, JP;
Akihiro Matsuyama, Tokyo, JP;
Shinichi Koyama, Tokyo, JP;
Masato Fukushima, Tokyo, JP;
Kinji Takahashi, Tokyo, JP;
Kazumichi Tosa, Tokyo, JP;
Masashi Seino, Tokyo, JP;
Takeshi Terada, Tokyo, JP;
Yuu Yamakawa, Tokyo, JP;
Motoo Takano, Tokyo, JP;
Takayuki Yagi, Tokyo, JP;
Akihiro Matsuyama, Tokyo, JP;
Shinichi Koyama, Tokyo, JP;
Masato Fukushima, Tokyo, JP;
Kinji Takahashi, Tokyo, JP;
Kazumichi Tosa, Tokyo, JP;
Masashi Seino, Tokyo, JP;
Takeshi Terada, Tokyo, JP;
Yuu Yamakawa, Tokyo, JP;
Motoo Takano, Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A press die and a processing method of the press die surface, and a manufacturing method of a vehicle body of an automobile, are capable of maintaining a high non-defective product rate of works after press processing, even in a case in which foreign matter such as iron filings and the like have adhered to a die surface. A press die for sheet metal forming has a multitude of concave portions on a die surface, and has a roughness (Ry) of a die surface on which the multitude of concave portions has been formed of 30 to 38 μm.