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:
Jan. 13, 2026
Filed:
Sep. 25, 2020
Teijin Limited, Osaka, JP;
Tatsuya Ekinaka, Osaka, JP;
Takashi Yoda, Osaka, JP;
Hiroshi Kishimoto, Osaka, JP;
Tomoaki Akaoka, Osaka, JP;
TEIJIN LIMITED, Osaka, JP;
Abstract
Provided are a method of producing a curved member, the method containing preparing a polycarbonate resin laminate with a hard coat layer for heat bending that includes a permeation layer (B layer) and a hard coat layer (C layer) sequentially layered on at least one surface of a polycarbonate resin base material layer (A layer) having a thickness of from 0.1 mm to 20 mm, and satisfying the requirements (a) to (d), pre-heating the polycarbonate resin laminate at from a temperature higher than Tg by 5° C. to a temperature higher than Tg by 70° C., in which Tg (° C.) is a glass transition temperature of a polycarbonate resin of the prepared polycarbonate resin laminate, and curving the polycarbonate resin laminate obtained by the pre-heating by applying pressure to the polycarbonate resin laminate, and a polycarbonate resin laminate with a hard coat layer for heat bending.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile