Patents by Inventor Hiroyuki Mutoh

Hiroyuki Mutoh 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: 11081312
    Abstract: A method of manufacturing an emitter is disclosed. The method enables a crystal structure of the tip of the front end of the emitter to return to its original state with high reproducibility by rearranging atoms in a treatment, and enables a long lasting emitter to be attained by suppressing extraction voltage rise after the treatment. As a method of manufacturing an emitter having a sharpened needle-shape, the method includes: performing an electropolishing process for the front end of an emitter material having conductivity to taper toward the front end; and performing an etching to make the number of atoms constituting the tip of the front end be a predetermined number or less by further sharpening the front end through an electric field-induced gas etching having constantly applied voltage, while observing the crystal structure of the front end, by a field ion microscope, in a sharp portion having the front end at its apex.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: August 3, 2021
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Tomokazu Kozakai, Yoshimi Kawanami, Hiroyuki Mutoh, Yoko Nakajima, Hironori Moritani, Shinichi Matsubara
  • Publication number: 20200312603
    Abstract: A method of manufacturing an emitter is disclosed. The method enables a crystal structure of the tip of the front end of the emitter to return to its original state with high reproducibility by rearranging atoms in a treatment, and enables a long lasting emitter to be attained by suppressing extraction voltage rise after the treatment. As a method of manufacturing an emitter having a sharpened needle-shape, the method includes: performing an electropolishing process for the front end of an emitter material having conductivity to taper toward the front end; and performing an etching to make the number of atoms constituting the tip of the front end be a predetermined number or less by further sharpening the front end through an electric field-induced gas etching having constantly applied voltage, while observing the crystal structure of the front end, by a field ion microscope, in a sharp portion having the front end at its apex.
    Type: Application
    Filed: February 7, 2020
    Publication date: October 1, 2020
    Inventors: Tomokazu KOZAKAI, Yoshimi KAWANAMI, Hiroyuki MUTOH, Yoko NAKAJIMA, Hironori MORITANI, Shinichi MATSUBARA
  • Publication number: 20020142095
    Abstract: A method of forming a film on a base member disposed in a reactor comprises introducing an organic gas into the reactor for use as a starting material for the film, and a dilute gas including an inert gas, irradiating a surface of the base member with vacuum ultraviolet rays; and forming the film on the base member under a normal pressure atmosphere.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 3, 2002
    Inventors: Yoshikazu Motoyama, Kiyohiko Toshikawa, Yosuke Motokawa, Junichi Miyano, Hiroyuki Mutoh, Ko Kurosawa, Atsushi Yokotani
  • Patent number: 5841881
    Abstract: A label/window position detecting device includes a conveyor, light-emitting elements, a lens, linear image sensors, image processors, and coordinate calculation units. The conveyor conveys a target object having a label/window. The light-emitting elements illuminate the target object which is being conveyed by the conveyor. The lens forms an image of the target object illuminated with the light-emitting elements. The linear image sensors photoelectrically convert image light incident through the lens into image signals. The image processors binarize the image signals obtained from the linear image sensors into monochrome binary image signals, using a predetermined threshold. The coordinate calculation units calculate a label/window position of the target object on the basis of the binary image signals from the image processors, which correspond to a label/window edge portion. A method of detecting a label/window position is also disclosed.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: November 24, 1998
    Assignee: NEC Corporation
    Inventors: Masato Iwakawa, Tomoaki Fukano, Hiroyuki Mutoh
  • Patent number: 4906764
    Abstract: A process for producing a phosphinylamino acid derivative of the formula: ##STR1## wherein R.sup.1 is a lower alkyl group, R.sup.2 is a hydrogen atom, a lower alkyl group, a halo-lower alkyl group or a substituted or unsubstituted phenyl group, and R.sup.3 is a substituted or unsubstituted alkyl group or a substituted or unsubstituted phenyl group, which comprises reacting a compound of the formula: ##STR2## wherein R.sup.1 and R.sup.2 are as defined above, and/or a compound of the formula: ##STR3## wherein R.sup.1 and R.sup.2 are as defined above, with a compound of the formula:R.sup.3 CONH.sub.2 (IV)wherein R.sup.3 is as defined above, carbon monoxide and hydrogen in the presence of a catalyst containing a metal of group VIII of the Periodic Table.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: March 6, 1990
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Hideki Takamatsu, Hiroyuki Mutoh, Fumio Suzuki, Shinichiro Takigawa