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:
Jun. 03, 2014
Filed:
Feb. 08, 2011
Hirokatsu Bannai, Tokyo, JP;
Yoshiyuki Okamoto, Kariya, JP;
Kenji Nakamura, Kariya, JP;
Takayuki Hirose, Kariya, JP;
Osamu Kasebe, Kariya, JP;
Shin Nishiya, Kariya, JP;
Kengo Kobayashi, Kariya, JP;
Hirokatsu Bannai, Tokyo, JP;
Yoshiyuki Okamoto, Kariya, JP;
Kenji Nakamura, Kariya, JP;
Takayuki Hirose, Kariya, JP;
Osamu Kasebe, Kariya, JP;
Shin Nishiya, Kariya, JP;
Kengo Kobayashi, Kariya, JP;
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Denso Corporation, Kariya, JP;
Abstract
Provided is an aluminum or aluminum alloy material having a surface treatment coating film on a surface of a substrate formed by an aluminum or aluminum alloy. The aluminum or aluminum alloy material has: a substrate formed by an aluminum or aluminum alloy; and a first protective layer and a second protective layer in the order on a surface of the substrate, wherein the first protective layer is a conversion coating film including vanadium and at least one or more types of metals selected from titanium, zirconium, and hafnium, the second protective layer is an organic coating film having a composition that includes (1) a chitosan derivative and a solubilizing agent, (2) a modified polyvinyl alcohol formed by graft polymerization of a hydrophilic polymer to a side chain of polyvinyl alcohol, and (3) a water-soluble crosslinking agent.