Toyoda Gosei has been granted a patent for an infrared transmissive product featuring a transparent plastic body that covers infrared sensor units. The product includes a coating film layer with dispersed pigment aggregates, enhancing infrared transmissivity while maintaining specific particle size requirements for optimal performance. GlobalData’s report on Toyoda Gosei 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 Toyoda Gosei, Passive safety systems was a key innovation area identified from patents. Toyoda Gosei's grant share as of July 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Infrared transmissive product for infrared sensors
The granted patent US12071528B2 outlines an innovative infrared transmissive product designed for use in infrared sensors. The product features a body that covers either a transmitting or receiving unit for infrared rays. This body consists of a base made from a transparent plastic that possesses infrared transmissivity. A key component of the design is a coating film layer applied to the rear surface of the base, oriented in the direction of infrared ray transmission. This coating is also made from a transparent plastic and incorporates dispersed aggregates of pigment particles, which have a primary particle size of 50 nm or less. The formulation specifies that up to 30 parts by mass of these aggregates can be combined with 100 parts by mass of the transparent plastic, with the aggregates themselves having a particle size ranging from 100 nm to 300 nm.
Further claims detail specific characteristics of the infrared transmissive product. Notably, the pigment used in the coating may be a metal oxide, enhancing its properties. The product is designed to achieve a light transmissivity of 30% or higher at a wavelength of 900 nm, alongside an L value of 30 or greater in the Lab color system, indicating its effectiveness in infrared applications. Additionally, the patent specifies that the primary particle size of the pigment aggregates can be approximately 35 nm, and it allows for a minimum of 7 parts by mass of these aggregates to be included in the coating formulation. This combination of materials and specifications aims to optimize the infrared transmissive capabilities of the product while maintaining transparency and color quality.
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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.
