Patents by Inventor Yasuro Iwai

Yasuro Iwai 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).

  • Carbon rod assembly for arc gouging and blasting of metallic article
    Patent number: 4555615
    Abstract: A carbon rod assembly is disclosed which includes a first carbon rod piece having a projection at one end thereof and a second carbon rod piece having a socket hole at one end thereof. External and internal screw threads of 1/2 to 3 turns are formed on the projection and socket hole respectively, so that the first and second carbon rod pieces are firmly connected by inserting the projection into the socket hole and thereafter rotating the carbon rod pieces relative to each other.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: November 26, 1985
    Assignee: Ibigawa Electric Industry Company, Ltd.
    Inventors: Haruo Yasuda, Kunihiko Yoshida, Yasuro Iwai, Takayuki Mizutani
  • Carbon rod assembly for arc gouging and blasting of metallic article
    Patent number: 4492850
    Abstract: A carbon rod assembly is disclosed which includes a first carbon rod piece having a projection at one end thereof and a second carbon rod piece having a socket hole at one end thereof. External and internal screw threads of 1/2 to 3 turns are formed on the projection and socket hole respectively, so that the first and second carbon rod pieces are firmly connected by inserting the projection into the socket hole and thereafter rotating the carbon rod pieces relative to each other.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: January 8, 1985
    Assignee: Ibiden Co., Ltd.
    Inventors: Haruo Yasuda, Kunihiko Yoshida, Yasuro Iwai, Takayuki Mizutani