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:
Jul. 10, 2012
Filed:
Nov. 16, 2007
Hideaki Homma, Ashikaga, JP;
Takashi Nishihara, Soka, JP;
Yusuke Tochigi, Tokyo, JP;
Shigetomo Sakakibara, Koshigaya, JP;
Hideaki Homma, Ashikaga, JP;
Takashi Nishihara, Soka, JP;
Yusuke Tochigi, Tokyo, JP;
Shigetomo Sakakibara, Koshigaya, JP;
Toppan Printing Co., Ltd., Tokyo, JP;
Abstract
A bulk diffuser including: a base material; and a diffusion layer which has a forming material and inner diffusion particles dispersed in the forming material, and is formed on the base material, wherein the inner diffusion particles include two or more types of spherical particles having different refraction indexes, and variations of cross-sectional area of scattering per unit volume of the bulk diffuser owing to a variation of a refraction index of the forming material are mutually cancelled by a combination of the inner diffusion particles.