Patents by Inventor Akira Itoh

Akira Itoh 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).

  • Super rapid hardening mixture
    Patent number: 4060425
    Abstract: This invention relates to a super rapid hardening mixture comprisingA. a super rapid hardening cement in which 11CaO.7Al.sub.2 O.sub.3. CaZ (X is a halogen atom), 3CaO.SiO.sub.2 and CaSO.sub.4 are present as indespensable components;B. at least one short range strength accelerator selected from the group consisting of a calcium aluminate material, a lime material, an amine and an ethylene glycol material and calcium sulfate hemihydrate;C. at least one emulsion selected from the group consisting of a bituminous emulsion, a rubber latex and a resin emulsion;D. from 12 to 50 weight percent of water in the total mixture.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: November 29, 1977
    Assignees: Japanese National Railways, Onoda Cement Company Limited, Nichireki Chemical Industry Company Limited
    Inventors: Yutaka Harada, Noriyuki Itai, Hiroshi Ucikawa, Hajime Kato, Katutoshi Sato, Akira Itoh
  • Odometer for an automobile
    Patent number: 3986005
    Abstract: An odometer for an automobile comprises a drive gear having a couple of projections, a plurality of numbered wheels whose least significant digit wheel has an internal gear, and a cam disposed between the drive gear and the least significant digit wheel, whereby the cam engages with and disengages from the internal gear teeth as the couple of the projections abut against the cam in response to the rotating direction of the drive gear, thus preventing the reversing of the numbered wheels.
    Type: Grant
    Filed: October 22, 1974
    Date of Patent: October 12, 1976
    Assignee: Nippondenso Co., Ltd.
    Inventor: Akira Itoh