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. 23, 2025
Filed:
Nov. 09, 2023
Pilkington Group Limited, Lancashire, GB;
Massimo Michetti, San Salvo, IT;
Pilkington Group Limited, Nr. Ormskirk, GB;
Abstract
A laminated glazing comprising first and second sheets of glass joined together by an interlayer structure comprising at least a first layer of adhesive interlayer material is disclosed. The surface compressive stress in a central region of a first major surface of the first sheet of glass is dependent upon the thickness of the first sheet of glass. For a thickness t of the first sheet of glass between 1.4 mm and 2.6 mm the minimum surface compressive stress CS(in MPa) in the central region of the first major surface of the first sheet of glass is given by CS(MPa)=21.0×t−118.6×t+236.9×t−a, wherein ais between 135 MPa and 140 MPa. The second sheet of glass may be a sheet of chemically strengthened glass having a thickness between 0.3 mm and 1.0 mm. The laminated glazing may be fixed or movable in an aperture in a vehicle.