Patents by Inventor Katsuhiko Mukai

Katsuhiko Mukai 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: 7641099
    Abstract: A solder joint determination method is disclosed that is able to inspect a joint portion between an electrode and a soldered portion and determine a soldering condition of the joint portion reliably with high precision. The method includes the steps of: scanning a surface of the electrode with the light beam; detecting a height of the electrode relative to the circuit board from data of the scanning of the electrode; scanning a surface of the solder near the electrode with the light beam; detecting a height of the solder relative to the circuit board from data of the scanning of the solder; and determining the solder joint condition between the electronic part and the solder based on the height of the electrode and the height of the solder relative to the circuit board.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: January 5, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiromitsu Nakagawa, Katsuhiko Mukai
  • Publication number: 20070017959
    Abstract: A solder joint determination method is disclosed that is able to inspect a joint portion between an electrode and a soldered portion and determine a soldering condition of the joint portion reliably with high precision. The method includes the steps of: scanning a surface of the electrode with the light beam; detecting a height of the electrode relative to the circuit board from data of the scanning of the electrode; scanning a surface of the solder near the electrode with the light beam; detecting a height of the solder relative to the circuit board from data of the scanning of the solder; and determining the solder joint condition between the electronic part and the solder based on the height of the electrode and the height of the solder relative to the circuit board.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 25, 2007
    Inventors: Hiromitsu Nakagawa, Katsuhiko Mukai
  • Patent number: 7040526
    Abstract: A method for assembling and testing an electronic circuit baseboard includes at least a step of soldering at least one electronic part to an electronic circuit baseboard using Pb excluded solder. One of erroneous wiring, erroneous mounting, malfunction, and defective soldering of the least one electronic part is tested by contacting a probe pin to various probe pin contact sections on the electronic circuit baseboard. During the step of soldering, the Pb excluded solder is also supplied to at least one of the various probe pin contact sections in order to suppress oxidation thereof.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: May 9, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Negishi, Katsuhiko Mukai, Hiromitsu Nakagawa
  • Publication number: 20060037991
    Abstract: A method for assembling and testing an electronic circuit baseboard includes at least a step of soldering at least one electronic part to an electronic circuit baseboard using Pb excluded solder. One of erroneous wiring, erroneous mounting, malfunction, and defective soldering of the least one electronic part is tested by contacting a probe pin to various probe pin contact sections on the electronic circuit baseboard. During the step of soldering, the Pb excluded solder is also supplied to at least one of the various probe pin contact sections in order to suppress oxidation thereof.
    Type: Application
    Filed: August 22, 2005
    Publication date: February 23, 2006
    Inventors: Takashi Negishi, Katsuhiko Mukai, Hiromitsu Nakagawa
  • Publication number: 20060000872
    Abstract: A printed circuit board inspection device is disclosed that is configured to measure the shape of a pasted solder and the shape of parts after mounting the parts in an inspection of a solder paste on a printed circuit board. This printed circuit board inspection device for a printed circuit board on which a solder paste is printed and at least one part is mounted on the solder paste, includes an inspecting section. The inspecting section calculates an amount of the solder paste not covered by an electrode of the part mounted on the solder paste based on image data captured by an imaging device, the image data showing the part mounted on the solder paste. If the calculated amount of not-covered solder paste is greater than a predetermined upper limit or smaller than a predetermined lower limit, the inspecting section determines that the solder paste is incorrectly printed.
    Type: Application
    Filed: June 16, 2005
    Publication date: January 5, 2006
    Inventors: Hiromitsu Nakagawa, Hideki Takahashi, Katsuhiko Mukai
  • Publication number: 20050092782
    Abstract: A dispenser includes a supporting section configured to retain a circuit board at a predetermined height. A dispenser nozzle includes a nozzle tip having at least one hole, the nozzle tip configured to provide an adhesive substance to the circuit board. A driving mechanism is configured to drive the supporting section in a first direction and drive the dispenser nozzle in a second direction and a third direction. A circuit board fabricating method includes dispensing at least one droplet of an adhesive substance, having a shape extending toward a first direction, onto a predetermined point on a circuit board. A chip is placed onto the predetermined point to cover the droplet. The chip is soldered onto the predetermined point.
    Type: Application
    Filed: October 25, 2004
    Publication date: May 5, 2005
    Inventors: Hideki Takahashi, Masaharu Ono, Katsuhiko Mukai
  • Patent number: 6779710
    Abstract: A method for soldering parts mounted on a print circuit baseboard with Pb-free material. A reflow soldering process is performed to parts mounted on one side surface of the print circuit baseboard. A flow soldering process is then performed to parts mounted on the other side surface of the print circuit baseboard with a jet flow solder process. Either a composition or a melting point of alloys generated when the reflow and flow soldering are performed is differentiated so that the alloy on one side surface does not melt during a flow soldering process to the other side surface.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: August 24, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Minoru Igarashi, Katsuhiko Mukai, Masashi Isoda, Takayuki Kobayashi
  • Publication number: 20030042289
    Abstract: A method for assembling and testing an electronic circuit baseboard includes at least a step of soldering at least one electronic part to an electronic circuit baseboard using Pb excluded solder. One of erroneous wiring, erroneous mounting, malfunction, and defective soldering of the least one electronic part is tested by contacting a probe pin to various probe pin contact sections on the electronic circuit baseboard. During the step of soldering, the Pb excluded solder is also supplied to at least one of the various probe pin contact sections in order to suppress oxidation thereof.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 6, 2003
    Inventors: Takashi Negishi, Katsuhiko Mukai, Hiromitsu Nakagawa
  • Patent number: 6500813
    Abstract: An ophthalmic composition comprises active vitamin D as an effective component and is used for preventing deterioration of the optical transparency, occurrence of high intraocular pressure diseases or defective sight, observed after an ophthalmic operation, due to hyperplasia of the anterior ocular cells in the tissues damaged by the ophthalmic operation, which are in course of a healing process, and/or excess production of cellular materials. The ophthalmic composition can be dropped in the eye after operations such as those for cataract, for transplantation of intraocular lenses and for cornea to maintain the intraocular transparency of the anterior ocular region, to control the hyperplasia of the anterior ocular cells in the tissues damaged by the ophthalmic operation, which are in course of a healing process, and/or excess production of cellular materials and to thus prevent any reduction of visual acuity.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: December 31, 2002
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai, Kiyoshi Kita
  • Publication number: 20020170947
    Abstract: A method for soldering parts mounted on a print circuit baseboard with Pb-free material. A reflow soldering process is performed to parts mounted on one side surface of the print circuit baseboard. A flow soldering process is then performed to parts mounted on the other side surface of the print circuit baseboard with a jet flow solder process. Either a composition or a melting point of alloys generated when the reflow and flow soldering are performed is differentiated so that the alloy on one side surface does not melt during a flow soldering process to the other side surface.
    Type: Application
    Filed: April 29, 2002
    Publication date: November 21, 2002
    Inventors: Minoru Igarashi, Katsuhiko Mukai, Masashi Isoda, Takayuki Kobayashi
  • Patent number: 6410006
    Abstract: An ophthalmic composition for prophylaxis and/or treatment of keratoconjunctivitis sicca, which is locally administered to the eyes and which comprises, as an effective component, at least one member selected from the group consisting of vitamin D, active vitamin D, and active vitamin D analogues.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: June 25, 2002
    Assignee: New Vision Co., Ltd.
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai, Kiyoshi Kita
  • Publication number: 20010027188
    Abstract: An ophthalmic composition for prophylaxis and/or treatment of keratoconjunctivitis sicca, which is locally administered to the eyes and which comprises, as an effective component, at least one member selected from the group consisting of vitamin D, active vitamin D, and active vitamin D analogues.
    Type: Application
    Filed: February 16, 2001
    Publication date: October 4, 2001
    Applicant: NEW VISION CO., LTD.
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai, Kiyoshi Kita
  • Patent number: 6248732
    Abstract: An ophthalmic composition comprises active vitamin D as an effective component and is used for preventing deterioration of the optical transparency, occurrence of high intraocular pressure diseases or defective sight, observed after an ophthalmic operation, due to hyperplasia of the anterior ocular cells in the tissues damaged by the ophthalmic operation, which are in course of a healing process, and/or excess production of cellular materials. The ophthalmic composition can be dropped in the eye after operations such as those for cataract, for transplantation of intraocular lenses and for cornea to maintain the intraocular transparency of the anterior ocular region, to control the hyperplasia of the anterior ocular cells in the tissues damaged by the ophthalmic operation, which are in course of a healing process, and/or excess production of cellular materials and to thus prevent any reduction of visual acuity.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 19, 2001
    Assignee: Katsuhiko Mukai
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai
  • Patent number: 6187331
    Abstract: An ophthalmic composition for prophylaxis and/or treatment of keratoconjunctivitis sicca, which is locally administered to the eyes and which comprises, as an effective component, at least one member selected from the group consisting of vitamin D, active vitamin D, and active vitamin D analogues.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: February 13, 2001
    Assignee: New Vision Co., Ltd.
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai, Kiyoshi Kita
  • Patent number: 5876709
    Abstract: An ophthalmic composition for preventing corneal haze and corneal refraction anomaly observed after anterior ocular tissues are damaged or during corneal diseases comprises, as an effective component, vitamin D such as ergocalciferols and cholecalciferols or active vitamin D.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: March 2, 1999
    Assignee: New Vision Co., Ltd.
    Inventors: Seiji Itoh, Yasuo Ishii, Katsuhiko Mukai, Kiyoshi Kita