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:
Dec. 01, 2020
Filed:
Jul. 09, 2018
Dow Global Technologies Llc, Midland, MI (US);
Dow Silicones Corporation, Midland, MI (US);
Kai Su, Midland, MI (US);
Brandon W. Swatowski, Sanford, MI (US);
Maynard G. Hyer, Sanford, MI (US);
William K. Weidner, Bay City, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Dow Silicones Corporation, Midland, MI (US);
Abstract
A method for producing an optical waveguide by: (a) depositing a first composition comprising: (i) a polysiloxane comprising epoxy and alkenyl groups, and (ii) a compound comprising an epoxy group, having molecular weight no greater than 1000 and a refractive index of at least 1.47 and (iii) a photo acid generator; and (iv) a hydrosilation catalyst (b) curing the first composition by exposure to ultraviolet light; (c) removing at least a part of the uncured portion of the first composition to produce a final patterned core layer; (d) depositing on the final patterned core layer a second composition comprising: (i) a polysiloxane comprising epoxy groups and alkenyl groups, and (ii) a compound comprising an epoxy group and a silicon-hydrogen bond, having molecular weight no greater than 1000 and a refractive index no greater than 1.45; (iii) a photo acid generator (e) heating at a temperature from 20 to 150° C. for 0.1 to 120 minutes; and (f) curing by exposure to ultraviolet light.