Patents by Inventor Norimi Koiwa

Norimi Koiwa 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).

  • Patent number: D256233
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: August 5, 1980
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hisao Fukushima, Yoshinori Kanda, Michio Ito, Norimi Koiwa
  • Patent number: D256234
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: August 5, 1980
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hisao Fukushima, Yoshinori Kanda, Michio Ito, Norimi Koiwa
  • Patent number: D256235
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: August 5, 1980
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hisao Fukushima, Yoshinori Kanda, Michio Ito, Norimi Koiwa
  • Patent number: D258958
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: April 21, 1981
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hisao Fukushima, Yoshinori Kanda, Michio Ito, Norimi Koiwa
  • Patent number: D302986
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: August 22, 1989
    Inventors: Kazuhito Takai, Norimi Koiwa, Masami Suda
  • Patent number: D331570
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 8, 1992
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Norimi Koiwa
  • Patent number: D332943
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: February 2, 1993
    Assignees: OKI Electric Industry Co., Ltd., NTT Data Communications Systems Corporation
    Inventors: Norimi Koiwa, Shigemi Sato
  • Patent number: D340703
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: October 26, 1993
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Norimi Koiwa