Patents by Inventor Hidehiro Yamada

Hidehiro Yamada 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: 11965099
    Abstract: An object of the present invention is to provide a dioxazine pigment having excellent fluidity. More specifically, an object of the present invention is to provide a dioxazine pigment in which practically sufficient fluidity is attained in both (1) initial viscosity and (2) storage stability when the dioxazine pigment is used in a printing ink application. The object is attained by providing a dioxazine pigment having a contact angle with respect to water according to an infiltration rate method in a range of 30° to 75°, and a contact angle with respect to 1-bromonaphthalene according to an infiltration rate method in a range of 30° to 75°.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: April 23, 2024
    Assignee: DIC CORPORATION
    Inventors: Shogo Yamada, Hiromasa Kikuchi, Hidehiro Otake
  • Patent number: 7049535
    Abstract: An illuminated switch includes a lens that is provided integrally with a converter on a surface opposing a light-emitting element disposed on a base constituting a switch body. The lens diffuses light emitted from the light-emitting element through the inner space of a coil spring urging a switch operating unit in the vertical direction. Moreover, a tilted surface is formed at an angle inclining towards the bottom surface of a hole below from the upper surface of the switch operating unit in the axial direction.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: May 23, 2006
    Assignee: Nihon Kaiheiki Industrial Company, Ltd.
    Inventors: Eiji Matsuyama, Hidehiro Yamada
  • Publication number: 20050150751
    Abstract: An illuminated switch includes a lens that is provided integrally with a converter on a surface opposing a light-emitting element disposed on a base constituting a switch body. The lens diffuses light emitted from the light-emitting element through the inner space of a coil spring urging a switch operating unit in the vertical direction. Moreover, a tilted surface is formed at an angle inclining towards the bottom surface of a hole below from the upper surface of the switch operating unit in the axial direction.
    Type: Application
    Filed: September 10, 2004
    Publication date: July 14, 2005
    Inventors: Eiji Matsuyama, Hidehiro Yamada
  • Patent number: 5624782
    Abstract: To provide a method of manufacturing thick-film resistor elements that forms thick-film resistors having a uniform thickness on a substrate surface with high precision.A method of manufacturing thick-film resistor elements by applying a thick-film resistor composition, obtained by dispersing a conductive component and an inorganic binder in an organic medium and which has a specified rheology, through a clear relief image obtained by exposing, curing, and developing a resist layer of a photopolymerizable mixture formed on an insulating substrate according to the resist pattern, and the thick-film paste obtained at this time has almost the same thickness as the photopolymerizable layer on the surface of the insulating substrate and is patterned according to the high-precision pattern defined by the sharp, linear, lateral edge enclosed by the resist image removed by development.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: April 29, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Keiichiro Hayakawa, Jerome D. Smith, Hidehiro Yamada