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:
Oct. 31, 1995
Filed:
Jan. 31, 1995
Applicant:
Inventors:
Shiro Kamiyama, Saitama, JP;
Masanori Kosugi, Saitama, JP;
Masahiro Kurata, Tokyo, JP;
Sadao Shiraishi, Tokyo, JP;
Nobuyoshi Sasaki, Tokyo, JP;
Assignees:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Sky Aluminium Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
216 85 ; 148272 ; 148275 ; 148626 ; 148667 ; 216101 ; 216103 ;
Abstract
An aluminum material is surface-treated with an aqueous solution containing 0.005 mol/lit. or more of a chelating agent and 5 g/lit. or more of an organic amine and having 100 ppm or less of phosphoric acid radical ion concentration and 500 ppm or less of sulfuric acid radical ion concentration, until its surface has a color tone (S) of: