MUMBAI, India, Oct. 11 -- Intellectual Property India has published a patent application (202517078737 A) filed by Sekisui Chemical Co. Ltd., Osaka, Japan, on Aug. 19, for 'near-infrared-transmitting black particles, ink, and molded body.'
Inventor(s) include Matsumoto, Ikuya; Ishii, Masahiro; and Kudo, Takuya.
The application for the patent was published on Oct. 10, under issue no. 41/2025.
According to the abstract released by the Intellectual Property India: "The present invention provides near-infrared-transmitting black particles with which it is possible to produce a high-performance optical film that has an excellent aesthetic appearance and contributes to safety for retinas, sensor accuracy, and sensor sensitivity. The near-infrared-transmitting black particles have a transmittance T700 at a wavelength of 700 nm, measured with a spectrophotometer, of less than 36%, a transmittance T900 at a wavelength of 900 nm of 70% or greater, and a maximum value of diffusion transmittance in a wavelength range of 850-2,500 nm, excluding 2,500 nm, of 5% or less, and the difference between a wavelength ?min at which the transmittance is minimum in the wavelength range of 400-2,500 nm and a wavelength ?max at which the transmittance is 90% in the above-mentioned wavelength range is 630 nm or less."
The patent application was internationally filed on Mar. 19, 2024, under International application No.PCT/JP2024/010677.
Disclaimer: Curated by HT Syndication.
