Patents by Inventor Kei SERIZAWA

Kei SERIZAWA 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 manufacturing plastic sintered body, metal mold, and plastic sintered body
    Patent number: 10583614
    Abstract: A plastic sintered body has a first compressed portion formed by heating plastic powder packed in a cavity of a metal mold and sintering a first portion of the plastic powder packed in the cavity in a first compression state. In addition, a second compressed portion is formed by sintering a second portion of the plastic powder packed in the cavity in a second compression state. A plurality of interconnected minute voids are formed in the first compressed portion and a plurality of interconnected minute voids smaller than the voids in the first compressed portion are formed in the second compressed portion. The manufacturing of the plastic sintered body as noted above is performed continuously in the metal mold. In addition, two types of porous portions including voids of different sizes are formed by sintering only one type of the plastic powder in the metal mold.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: March 10, 2020
    Assignee: ENPLAS CORPORATION
    Inventors: Kei Serizawa, Koji Noguchi
  • METHOD FOR MANUFACTURING PLASTIC SINTERED BODY, METAL MOLD, AND PLASTIC SINTERED BODY
    Publication number: 20170120540
    Abstract: A first compressed portion is formed by heating the plastic powder packed in a cavity of a metal mold and sintering a first portion of the plastic powder packed in the cavity in a first compression state. In addition, a second compressed portion is formed by sintering a second portion of the plastic powder packed in the cavity in a second compression state. A lot of interconnected minute voids are formed in the first compressed portion and a lot of interconnected minute voids smaller than the voids in the first compressed portion are formed in the second compressed portion. Such manufacturing work of a plastic sintered body is performed continuously in the metal mold. In addition, two types of porous portions including voids of different sizes are formed by sintering only one type of the plastic powder in the metal mold.
    Type: Application
    Filed: May 25, 2015
    Publication date: May 4, 2017
    Applicant: ENPLAS CORPORATION
    Inventors: Kei SERIZAWA, Koji NOGUCHI