Patents by Inventor Taku MIYAZAWA

Taku MIYAZAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230130507
    Abstract: It is an object of the present invention to provide a negative resist composition that is useful for producing a color filter with a high transmittance of light at a wavelength of 440 nm. A negative resist composition of the present invention comprises a colorant and a resin, wherein the colorant contains a xanthene dye, and a cured film formed from the negative resist composition exhibits a spectrum that satisfies the following condition 1: [condition 1] a maximum absorption wavelength is present in a wavelength range of 500 to 580 nm, and based on a transmittance at the maximum absorption wavelength being 5%, a transmittance at a wavelength of 440 nm is 80% or more and a transmittance at a wavelength of 620 nm is 80% or more.
    Type: Application
    Filed: March 11, 2021
    Publication date: April 27, 2023
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomohiro NAKAYAMA, Tetsuo AKASAKA, Takuma AOKI, Taku MIYAZAWA