Patents by Inventor Katsunori Sakamoto

Katsunori Sakamoto 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).

  • Method for producing halogenated zinc phthalocyanine pigment
    Patent number: 12221546
    Abstract: A method for producing a halogenated zinc phthalocyanine pigment includes a step of forming a halogenated zinc phthalocyanine crude pigment into a pigment. The halogenated zinc phthalocyanine crude pigment is obtained by depositing a halogenated zinc phthalocyanine, which is synthesized by using a compound that generates an acid by reacting with water, and the aforementioned step includes a pretreatment step of dry-crushing the halogenated zinc phthalocyanine crude pigment by using an attritor and then washing the dry-crushed halogenated zinc phthalocyanine crude pigment with water.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 11, 2025
    Assignee: DIC CORPORATION
    Inventors: Keisuke Sakamoto, Ayaka Yamaji, Nozomi Shimizu, Mayumi Tokuoka, Katsunori Shimada
  • Frequency converter
    Patent number: D883207
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: May 5, 2020
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Katsunori Sakamoto