Patents by Inventor Hisami KAJIWARA

Hisami KAJIWARA 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).

  • DIAPHRAGM FOR ELECTROACOUSTIC TRANSDUCER
    Publication number: 20230217199
    Abstract: An aspect of the present invention is directed to a diaphragm for an electroacoustic transducer, and according to the diaphragm for an electroacoustic transducer, in a base material made of a fiber material mainly composed of cellulose fibers, a mixed layer in which the fiber material and silk nanofibers are mixed is formed.
    Type: Application
    Filed: June 2, 2021
    Publication date: July 6, 2023
    Applicant: FOSTER ELECTRIC COMPANY, LIMITED
    Inventors: Hisami KAJIWARA, Masahiro MIWA
  • Diaphragm for electroacoustic transducer
    Patent number: 11317213
    Abstract: In a diaphragm 1, at a front surface side surface layer of a base material 10 made of pulps 20 which are mainly composed of cellulose, a mixed layer 11 in which the pulps 20, mica 22, and cellulose nanofibers 21 are mixed is formed.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 26, 2022
    Assignee: FOSTER ELECTRIC COMPANY, LIMITED
    Inventor: Hisami Kajiwara
  • DIAPHRAGM FOR ELECTROACOUSTIC TRANSDUCER
    Publication number: 20210385580
    Abstract: In a diaphragm 1, at a front surface side surface layer of a base material 10 made of pulps 20 which are mainly composed of cellulose, a mixed layer 11 in which the pulps 20, mica 22, and cellulose nanofibers 21 are mixed is formed.
    Type: Application
    Filed: October 3, 2019
    Publication date: December 9, 2021
    Applicant: FOSTER ELECTRIC COMPANY, LIMITED
    Inventor: Hisami KAJIWARA