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. 25, 2023
Filed:
Dec. 23, 2019
Tokai Optical Co., Ltd., Okazaki, JP;
Hirotoshi Takahashi, Okazaki, JP;
Tokai Optical Co., Ltd., Okazaki, JP;
Abstract
An optical plastic product has an optical multilayer film formed on one or both surfaces of a base made of plastic, directly or via an intermediate film, wherein the optical multilayer film includes a tensile-stress high-refractive-index layer having tensile stress as internal stress and made of a high refractive index material, and a low refractive index layer made of a low refractive index material, and the tensile-stress high-refractive-index layer is disposed with a physical film thickness of not greater than 10 nm, in a first layer as counted from the base side in the optical multilayer film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile