Patents by Inventor Yoshinori Akinari

Yoshinori Akinari 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).

  • Illumination sensor with spectral sensitivity corresponding to human luminosity characteristic
    Patent number: 6670597
    Abstract: A solar battery SB for detecting the surrounding brightness is provided and a switching element SW is controlled based on output voltage of the solar battery SB. The switching element SW is made up of MOSFETs Q1 and Q2. To form an electronic automatic on/off switch, a triac Q is controlled by turning on/off the switching element SW.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: December 30, 2003
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Nobuhiro Kitamura, Yukihiro Murata, Yoshinori Akinari, Yoshihisa Ishigami
  • Electromagnetic drive apparatus
    Patent number: 5953198
    Abstract: An electromagnet drive apparatus being characterized by a switching element 1 connected in series with a coil 3 of an electromagnet; a pulse signal generation circuit 16 which generates, on predetermined cycles, a pulse signal used for turning on the switching element; a regenerative circuit 4 which permits flow of a regenerated electrical current when the switch section is turned on and the switching element is turned off from a state in which the switch section and the switching element are in an on state and a source voltage is applied to the coil of the electromagnet, and which causes the power absorbing element to immediately reduce the regenerated electrical current flowing through the coil of the electromagnet when the switch section and the switching element are turned off; and a delay circuit 11 which turns on the switch section by application of the supply voltage and maintains the switch section in an on state until a predetermined period of time elapses after the application of the supply voltage
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: September 14, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Yukihiro Murata, Yoshinori Akinari