Patents by Inventor Takashi Tanno

Takashi Tanno 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).

  • Process for producing hydrogen with viologen cation radical using metal complex of macrocyclic polydentate compound as catalyst
    Patent number: 4338291
    Abstract: This invention relates to a process for producing hydrogen by reducing proton with viologen cation radical using metal complex of macrocyclic polydentate compound as catalyst.
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: July 6, 1982
    Assignee: Rikagaku Kenkyusho
    Inventors: Akira Yamada, Takashi Tanno, Dieter Wehle, Masao Kaneko
  • Method for inspecting gear contact patterns
    Patent number: 4337580
    Abstract: In a gear tooth having a tooth surface, the gear contact pattern is inspected by the steps of measuring the tooth surface at regularly positioned measuring points to detect deviations from a standard gear profile at corresponding measuring points and counting the number of such measuring points wherein the deviations are within a predetermined limit. Where the counted number is greater than a predetermined value, the tooth surface is accepted.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: July 6, 1982
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Takashi Tanno, Shigemitsu Koike
  • Method for inspecting gear contact patterns
    Patent number: 4276700
    Abstract: In a pair of intermeshing gear teeth each having a tooth surface, the gear contact pattern is inspecting by steps of measuring each tooth surface at a regularly positioned measuring points to detect deviations from a standard gear profile at corresponding measuring points, calculating relative distances between the teeth surfaces at the measuring points, and counting the number of combinations of measuring points wherein the relative distances are within a predetermined limit. Where the counted number is greater than a predetermined value, the pair of gears are accepted.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: July 7, 1981
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Takashi Tanno, Shigemitsu Koike