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. 04, 2012
Filed:
Jul. 30, 2009
Yuichi Furukawa, Toyota, JP;
Fumio Kawahara, Toyota, JP;
Hidenori Matsuoka, Nagoya, JP;
Hitoshi Kabasawa, Omiya, JP;
Yuichi Furukawa, Toyota, JP;
Fumio Kawahara, Toyota, JP;
Hidenori Matsuoka, Nagoya, JP;
Hitoshi Kabasawa, Omiya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
MEC International Co., Ltd., Toyota-shi, JP;
Abstract
A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.