Patents by Inventor Yoshito Ogawa

Yoshito Ogawa 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: 11969922
    Abstract: Provided is a resin molding apparatus that can reduce a variation in a thickness of a resin to be molded. A resin molding apparatus includes: a molding mold having one mold and the other mold; one mold wedge mechanism; and one mold cavity block driving mechanism. In a state that one mold cavity block is moved to a preset height position using the one mold cavity block driving mechanism and a position in a direction away from the other mold in the one mold cavity block having been moved to the height position is fixed to be limited using the one mold wedge mechanism, a resin is injected into one mold cavity, and thereafter resin molding can be performed by changing a depth of the one mold cavity using the one mold wedge mechanism and the one mold cavity block driving mechanism.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: April 30, 2024
    Assignee: TOWA Corporation
    Inventors: Yoshito Okunishi, Fuyuhiko Ogawa
  • Publication number: 20240116229
    Abstract: A resin molding device includes: a lower mold on which a substrate is placed; an upper mold in which a cavity is formed by a side block and a cavity block provided so as to be capable of ascending and descending vertically with respect to the side block; a clamp mechanism which clamps the lower mold and the upper mold; a transfer mechanism which supplies a resin material to the cavity by a plunger; and a controller which performs first final adjustment control for adjusting a clamp load of the clamp mechanism to a final clamp load after the cavity has been filled with the resin material supplied from the transfer mechanism and which performs second final adjustment control for driving the plunger after the first adjustment control has been completed and thereby adjusting a plunger load applied to the plunger to a final plunger load.
    Type: Application
    Filed: November 12, 2021
    Publication date: April 11, 2024
    Applicant: TOWA CORPORATION
    Inventors: Yoshito OKUNISHI, Fuyuhiko OGAWA
  • Patent number: 6256126
    Abstract: It is the object of the invention to provide a NB-WDM system, in which deterioration of a transmission characteristic can be prevented, and a method for establishing a wavelength number information of the same. In the NB-WDM system, in which plural cascaded IN-LINE amplifier stations are connected with a terminal station, and the terminal station establishes a wavelength number information in the format of a supervisory signal. The IN-LINE amplifiers are respectively provided with alarm/control management units, and monitor occurrences of failures of optical signals. Accordingly, the system prevents transfer of wrong wavelength number information caused by a fault in a previous IN-LINE amplifier station, the outputs of optical amplifiers are kept to be moderate, and deterioration of the transmission characteristic can be prevented.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: July 3, 2001
    Assignee: NEC Corporation
    Inventor: Yoshito Ogawa
  • Patent number: 5574757
    Abstract: A phase-locked loop circuit comprises a plurality of memory counters which generate respective timing clocks corresponding to phase components detected from an input clock signal at different time instants having a predetermined time interval. Of the timing clocks, a single timing clock is selected such that the timing clock selected corresponds to a phase component previous to the latest phase component of the input clock signal. When the input clock signal stops dead or a substantial departure of frequency or phase occurs therein, the timing clock selected is applied as a reference clock to a phase comparator of the PLL circuit instead of the input clock signal.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: November 12, 1996
    Assignee: NEC Corporation
    Inventor: Yoshito Ogawa