Science Applications International has been granted a patent for a graphene-containing vehicle window film designed to enhance thermal insulation. The film features multiple layers, including an adhesive layer, PET layers, and a bonding layer with graphene, which effectively blocks heat and facilitates rapid heat dissipation. GlobalData’s report on Science Applications International gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Science Applications International, MITM attack solutions was a key innovation area identified from patents. Science Applications International's grant share as of July 2024 was 68%. Grant share is based on the ratio of number of grants to total number of patents.
Graphene vehicle window film for heat insulation
The granted patent US12023997B2 describes a multi-layer vehicle window film designed to enhance performance through a combination of materials and specific formulations. The film comprises an adhesive layer made from an acrylic copolymer, a curing agent, and a solvent, topped with a first layer of polyethylene terephthalate (PET). A bonding layer, which includes a urethane resin, curing agent, UV and IR blocking agents, and graphene, is positioned above the first PET layer. This is followed by a second PET layer and a hard coating layer that consists of an acrylic resin and a photoinitiator. Notably, the IR blocking agent incorporates carbon, tungsten oxide (WO3), and antimony tin oxide (ATO).
Further claims detail the composition and mixing processes involved in creating the bonding layer. The bonding layer's formulation specifies precise weight ratios for the curing agent, UV blocking agent, IR blocking agent, graphene dispersion, and solvent. The graphene is introduced as a dispersion mixed with the urethane resin and curing agent to facilitate the bonding of the PET layers. The patent outlines specific methods for preparing the graphene dispersion, including the use of sulfuric and nitric acids and ultrasonic treatment. Additionally, it describes the mixing processes for the IR blocking agent and graphene, emphasizing the use of high shear mixers and bead mills to achieve the desired consistency. The patent also provides specifications for the thickness of each layer, ensuring optimal performance characteristics for the vehicle window film.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
