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. 22, 2005
Filed:
Sep. 09, 1999
Applicants:
Toshiharu Mori, Izumiotsu, JP;
Takuji Hatano, Suita, JP;
Inventors:
Toshiharu Mori, Izumiotsu, JP;
Takuji Hatano, Suita, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F001/13 ;
U.S. Cl.
CPC ...
Abstract
The optical waveguide includes an optical waveguide layer, and a filter element including an ultraviolet curing liquid crystal layer disposed in a position which divides the optical waveguide layer in a waveguide direction. The ultraviolet curing liquid crystal layer having a twisted structure in which a helical pitch after curing reflects light of a predetermined wavelength.
Mori, Toshiharu. (2005). Optical filter device and method of making same (U.S. Patent No. 6870595). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6870595
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