Patents by Inventor Akio Yabugami

Akio Yabugami 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).

  • LED illumination device
    Patent number: 9022600
    Abstract: A Light Emitting Diode (LED) illumination device having a pleasant appearance and capable of uniform illumination is provided. The LED illumination device (101) includes a support portion (200) having a first support surface (210) and a second support surface (220), wherein the first support surface (210) faces downward, and the second support surface (220) faces downward, is located at a position higher than the first support surface (210), and surrounds the first support surface (210); a plurality of LED chips (400), including a plurality of first LED chips (411) supported on the first support surface (210) and a plurality of second LED chips (420) supported on the second support surface (220); and a mask (700), located at a lower position with respect to the support portion (200), penetrated by light from the LED chips (400), and including a tilted portion (710) inclining downward toward the center.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Kohei Mizuta, Akio Yabugami, Hiroaki Tsujii
  • LED light bulb
    Patent number: 8820966
    Abstract: The present invention provides a LED light bulb which is capable of providing the gorgeous and artistic impressions. The LED light bulb comprises a plurality of LED chips, a globe covering the LED chips and allowing the light emitted from the LED chips to penetrate, and a bulb connector, wherein at least one portion of the globe has a concave-convex part.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 2, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Masaru Igaki, Akio Yabugami
  • LED ILLUMINATION DEVICE
    Publication number: 20120224364
    Abstract: A Light Emitting Diode (LED) illumination device having a pleasant appearance and capable of uniform illumination is provided. The LED illumination device (101) includes a support portion (200) having a first support surface (210) and a second support surface (220), wherein the first support surface (210) faces downward, and the second support surface (220) faces downward, is located at a position higher than the first support surface (210), and surrounds the first support surface (210); a plurality of LED chips (400), including a plurality of first LED chips (411) supported on the first support surface (210) and a plurality of second LED chips (420) supported on the second support surface (220); and a mask (700), located at a lower position with respect to the support portion (200), penetrated by light from the LED chips (400), and including a tilted portion (710) inclining downward toward the center.
    Type: Application
    Filed: February 29, 2012
    Publication date: September 6, 2012
    Applicant: ROHM CO., LTD.
    Inventors: Kohei Mizuta, Akio Yabugami, Hiroaki Tsujii
  • LED LIGHT BULB
    Publication number: 20120188767
    Abstract: The present invention provides a LED light bulb which is capable of providing the gorgeous and artistic impressions. The LED light bulb comprises a plurality of LED chips, a globe covering the LED chips and allowing the light emitted from the LED chips to penetrate, and a bulb connector, wherein at least one portion of the globe has a concave-convex part.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Applicant: ROHM CO., LTD.
    Inventors: Masaru Igaki, Akio Yabugami