Patents by Inventor Aki Katsumata

Aki Katsumata 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).

  • Steel fuel conveying pipe
    Patent number: 10408177
    Abstract: Provided is a steel fuel conveying pipe with high quality which has high resistance to corrosive fuel and followability, and allows working after plating. The steel fuel conveying pipe is characterized in that a Ni-plate layer is formed on an inner surface of a steel pipe of base material, the Ni-plated layer is wholly composed of a mutual diffusion layer including the base material and Ni and a non-mutual diffusion layer including only Ni formed on an outermost surface of the diffusion layer, a layer thickness of the non-mutual diffusion layer is 3 ?m or more, and a total layer thickness of the mutual diffusion layer and the non-mutual diffusion layer is 10 ?m or more and 25 ?m or less.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: September 10, 2019
    Assignee: USUI KOKUSAI SANGYO KAISHA LIMITED
    Inventor: Aki Katsumata
  • STEEL FUEL CONVEYING PIPE
    Publication number: 20160230725
    Abstract: Provided is a steel fuel conveying pipe with high quality which has high resistance to corrosive fuel and followability, and allows working after plating. The steel fuel conveying pipe is characterized in that a Ni-plate layer is formed on an inner surface of a steel pipe of base material, the Ni-plated layer is wholly composed of a mutual diffusion layer including the base material and Ni and a non-mutual diffusion layer including only Ni formed on an outermost surface of the diffusion layer, a layer thickness of the non-mutual diffusion layer is 3 ?m or more, and a total layer thickness of the mutual diffusion layer and the non-mutual diffusion layer is 10 ?m or more and 25 ?m or less.
    Type: Application
    Filed: September 2, 2014
    Publication date: August 11, 2016
    Applicant: USUI KOKUSAI SANGYO KAISHA LIMITED
    Inventor: Aki Katsumata