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:
Sep. 29, 2026
Filed:
Jul. 22, 2022
Toyobo Co., Ltd., Osaka, JP;
TOYOBO CO., LTD., Osaka, JP;
Abstract
Provided is a laminate that has excellent long-term heat resistance even when an inorganic substrate having a high surface roughness is used. This laminate is characterized by having an inorganic substrate, a silane coupling agent layer, and a heat-resistant polymer film in this order, and satisfying the following (A)-(C). (A) The peel strength F0 of the laminate, as measured by a 90° peeling method, is 1.0-20 N/cm. (B) In the surface of the inorganic substrate after peeling the heat-resistant polymer film from the laminate at 90°, the area of a peeled portion on the boundary surface between the inorganic substrate and the silane coupling agent layer is at most 20% of the entire peeled surface. (C) The peel strength F1 of the laminate, as measured by the 90° peeling method after heating in a nitrogen atmosphere at 350° C. for 500 hours, is greater than F0.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile