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:
Mar. 21, 2017
Filed:
Nov. 27, 2013
Nippon Light Metal Company, Ltd., Tokyo, JP;
Yoshihiro Taguchi, Shizuoka, JP;
Takayuki Yamaguchi, Shizuoka, JP;
Shingo Koizumi, Shizuoka, JP;
Akira Iizuka, Shizuoka, JP;
Kiyokazu Koga, Shizuoka, JP;
Masato Yatsukura, Shizuoka, JP;
NIPPON LIGHT METAL COMPANY, LTD., Tokyo, JP;
Abstract
Provided is a pellicle frame that can prevent generation of haze and reduces a surface glittering defect under irradiation with collected light, and a method of manufacturing the same. The pellicle frame is obtained by using an aluminum frame material having a structure satisfying predetermined conditions on the circle-equivalent diameters of a MgSi crystallized product, an AlCuMg crystallized product, an Al—Fe-based crystallized product (AlFe or AlCuFe), and an AlCuMg crystallized product and on the area ratios of those crystallized products each having a circle-equivalent diameter of 1 μm or more, and in addition, subjecting the aluminum frame material to anodic oxidation processing using an alkaline electrolytic solution containing as an electrolyte a predetermined organic acid salt. In addition, the method of manufacturing a pellicle frame includes: preparing an aluminum frame material having a structure as described above; and subjecting the aluminum frame material to anodic oxidation processing using an alkaline electrolytic solution containing a predetermined organic acid salt, to form an anodic oxide film.