Patents by Inventor Masaaki Kunimatsu

Masaaki Kunimatsu 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).

  • Composition for forming a near infrared screening filter, and near infrared screening filter
    Patent number: 5807511
    Abstract: A composition for forming a near infrared screening filter, which comprises a binder (i), a metal oxide or inorganic oxide powder (ii) having a light transmittance ratio (transmittance of light with a wavelength of 550 nm/transmittance of light with a wavelength of 1180 nm) of at least 3, and a dye (iii) having a light transmittance ratio (transmittance of light with a wavelength of 550 nm/transmittance of light with a wavelength of from 740 to 930 nm) of at least 2.7, as essential components.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: September 15, 1998
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Masaaki Kunimatsu, Yuji Yamazaki