Patents by Inventor Katsuhiko Tomita

Katsuhiko Tomita 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: 4872966
    Abstract: An improved electrode assembly of a modular configuration for sensing ion concentration includes a substrate mounted in a housing and being sandwiched by a first and second support layer of non-conductive material. A gelantinized solution is positioned in an opening between the first support layer and a substrate, while a second gelatinized solution is positioned in an opening between a second support layer and a substrate. Electric leads and electrodes are appropriately positioned on the substrate for operative contact with the respective gelatinized solutions. An ion-responsive member contacts one gelatinized solution, while an acqueous junction member extends through the respective support layers and substrates to contact another gelatinized solution.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: October 10, 1989
    Assignee: Horiba, Ltd.
    Inventors: Haruo Kotani, Katsuhiko Tomita
  • Patent number: 4850105
    Abstract: A method of removing a lead from a semiconductor tip part is provided by inserting the tip part in a through hole of a substrate. The tip part is equalized in height with substrate by adhering an adhesive tape across the through hole. A gap is left between the tip part and through hole which is filled with an insulative resin. If the substrate already has electrically conductive portions on it, a conductive paste is printed on the substrate between conductive portions and the tip part. If the substrate does not already have them, the conductive portions are formed by the addition of conductive paste on the substrate and which extends to the tip part.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: July 25, 1989
    Assignee: Horiba, Ltd.
    Inventors: Kazuo Nakajima, Katsuhiko Tomita
  • Patent number: 4816132
    Abstract: A flat shaped composite electrode includes a flat substrate having a high electrical insulating property. A flat inside pair of electrodes and a flat outside pair of electrodes are fixed on the substrate. A flat support layer having a high electrical insulating property overlays the electrodes and substrate. The support layer describes two holes into which a gelatinized internal solution is placed. An ion response glass membrane is mounted on the support layer and over one hole, while a liquid junction membrane is similarly mounted over the other hole.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: March 28, 1989
    Assignee: Horiba, Ltd.
    Inventors: Haruo Kotani, Katsuhiko Tomita, Takaaki Yada, Tsuyoshi Nakanishi
  • Patent number: 4797188
    Abstract: An improved electrode assembly for measuring ions, such as a pH electrode, and method of forming the same is provided. A plastic support layer with an aperture is mounted over a base member having electrodes. A gelatinized internal solution is mounted in the aperture over the electrodes in a plasticized solution containing a hydrogen ion-responsive material is formed into a paste and is positioned over the gelatinized internal solution and the adjacent surrounding areas of the support layer. When the paste solidifies it forms a thin film plastic ion-selective response membrane that is integrally sealed to the support layer.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: January 10, 1989
    Assignee: Horiba, Ltd.
    Inventor: Katsuhiko Tomita
  • Patent number: 4792463
    Abstract: Method of producing a ferroelectric thin film by chemical vapor deposition, by providing a gaseous mixture containing oxygen and a gaseous raw material containing (A) alkyl lead and or alkyl bismuth together with an alcoholate of titanium, zirconium, silicon, germanium or niobium, (B) alkyl lead and alkyl germanium, or (C) alkyl bismuth and alkyl lead, and reacting the oxygen and gaseous raw material to oxidize the components of (A), (B) or (C), to form the thin film on the substrate.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: December 20, 1988
    Assignees: Masaru Okada, Horiba, Ltd.
    Inventors: Masaru Okada, Katsuhiko Tomita
  • Patent number: 4499379
    Abstract: An infrared radiation gas analyzer for determining the concentration of an ingredient in a sample gas has a sample gas container for containing a sample gas at a temperature at which the ingredient the concentration of which is to be determined will emit infrared radiation in the range characteristic of the ingredient and a window for allowing the infrared radiation to escape from the container. An optical chopper outside said container interrupts the radiation escaping from the container. A pair of filters is positioned in the path of the radiation escaping from the container and spaced transversely of the path, one of the filters transmitting only radiation in the range and the other of the filters transmitting only radiation in a range near to the first mentioned range.
    Type: Grant
    Filed: March 8, 1983
    Date of Patent: February 12, 1985
    Assignee: Horiba, Ltd.
    Inventors: Kimio Miyatake, Katsuhiko Tomita
  • Patent number: 4456919
    Abstract: A thermopile type detector which is constituted by an electrically insulating film, a thermopile supported on the film, a semiconductor substrate supporting the film, and a temperature sensing element on the surface of the substrate on which the film is supported and in the neighborhood of a cold junction of the thermopile. The temperature on the substrate immediately adjacent a cold junction of the thermopile can be measured for use in compensating the output of the thermopile for the changes in temperature of the cold junction. The temperature sensing element can be a semiconductor material such as a diode or a transistor forming a semiconductor with the substrate.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: June 26, 1984
    Assignee: Horiba, Ltd.
    Inventors: Katsuhiko Tomita, Tetsuo Shimizu, Masaichi Bandoh
  • Patent number: 4445034
    Abstract: A compound infrared detector, having a thermopile detector which is constructed on one face of a pyroelectric insulating thin film and a pyroelectric detector which is constructed by installing electrodes on both faces of the insulating thin film in opposite relationship to an infrared ray responsive portion thereof.The compound infrared detector of the present invention can function both as a pyroelectric detector and as a thermopile detector. In addition, the pyroelectric detector and the thermopile detector can be installed on the identical focus of the identical optical system because they have a common infrared ray responsive portion and as a result thereof, the number of detectors and also the number of optical adjusting means and optical parts can be reduced relative to those used in the prior case when two detectors are used; that is, the mutual compensation effect of both kinds of detectors can be inexpensively attained.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: April 24, 1984
    Assignee: Horiba, Ltd.
    Inventors: Katsuhiko Tomita, Ken Katsuki, Toshiyuki Kuritani