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:
May. 17, 2022
Filed:
Apr. 27, 2018
Nissan Chemical Corporation, Tokyo, JP;
Takehiro Nagasawa, Funabashi, JP;
Sayoko Tadokoro, Funabashi, JP;
Tsubasa Kashino, Funabashi, JP;
Kentaro Ohmori, Funabashi, JP;
NISSAN CHEMICAL CORPORATION, Tokyo, JP;
Abstract
An optical waveguide-forming material has a low propagation loss even in a long wavelength region and has a high refractive index at a wavelength of 1,550 nm. An optical waveguide-forming composition includes (a) 100 parts by mass of a reactive silsesquioxane compound that is a polycondensation product of an alkoxysilane compound A of the following Formula [1]:Ar—Si(OR)  [1]and an alkoxysilane compound B of the following Formula [2]:Ar—Si(OR)  [2]and (b) 10 to 500 parts by mass of a fluorene compound of the following Formula [3]: An optical waveguide can be formed by using the composition.