Patents by Inventor Yasufumi Sakakibara

Yasufumi Sakakibara 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: 7415688
    Abstract: A method of manufacturing a surface-emitting backlight is provided with the steps of forming a lead frame and resin-made molded case by insert molding, attaching light sources, which are red, blue and green LED dies, to contacts of the lead frame provided in a hollow space of the molded case, forming a light guide section by filling the hollow space with a transparent or semitransparent resin, and thereafter attaching a reflector sheet, and lens sheets (or diffuser sheets) in accordance with the applications of the backlight.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: August 19, 2008
    Assignee: Ryoden Trading Company, Limited
    Inventor: Yasufumi Sakakibara
  • Publication number: 20060124955
    Abstract: A method of manufacturing a surface-emitting backlight is provided with the steps of forming a lead frame and resin-made molded case by insert molding, attaching light sources, which are red, blue and green LED dies, to contacts of the lead frame provided in a hollow space of the molded case, forming a light guide section by filling the hollow space with a transparent or semitransparent resin, and thereafter attaching a reflector sheet, and lens sheets (or diffuser sheets) in accordance with the applications of the backlight.
    Type: Application
    Filed: February 9, 2006
    Publication date: June 15, 2006
    Applicant: RYODEN TRADING COMPANY, LIMITED
    Inventor: Yasufumi Sakakibara
  • Patent number: 7055586
    Abstract: A multi-tube heat exchanger capable of increasing heat exchanging performance without increasing its heat transmitting area, as well as avoiding a reduction in heat exchanging efficiency due to adhering pollutant or the like. The multi-tube heat exchanger includes an inner tube group through which a first fluid passes and an outer tube around which a second fluid passes. The heat transmitting tube is constituted of only a heat transmitting tube main body and a number of lump-like projections formed at a predetermined interval in the length direction on one or both opposing wall faces on longer sides of the heat transmitting tube main body. Longitudinal eddies are generated in high-temperature gas by the, thereby consequently increasing heat exchanging efficiency.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: June 6, 2006
    Assignee: Maruyasu Industries Co., Ltd.
    Inventors: Yasufumi Sakakibara, Naruki Harada
  • Patent number: 7024765
    Abstract: A method of manufacturing a surface-emitting backlight is provided with the steps of forming a lead frame and resin-made molded case by insert molding, attaching light sources, which are red, blue and green LED dies, to contacts of the lead frame provided in a hollow space of the molded case, forming a light guide section by filling the hollow space with a transparent or semitransparent resin, and thereafter attaching a reflector sheet, and lens sheets (or diffuser sheets) in accordance with the applications of the backlight.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 11, 2006
    Assignee: Ryoden Trading Company, Limited
    Inventor: Yasufumi Sakakibara
  • Patent number: 6977004
    Abstract: A vapor-liquid separator includes an outer tube, an introduction tube, a delivery tube, and a discharge tube. The introduction tube allows passage of a vapor-liquid two-phase fluid in a swirling state. The delivery tube allows passage of the vapor phase separated from the vapor-liquid two-phase fluid. The introduction tube and the delivery tube are coaxially provided at the corresponding axially opposite ends of the outer tube. The discharge tube is provided on the outer tube in the vicinity of the axial end face of the outer tube on the side toward the introduction tube. The discharge tube is adapted to discharge therefrom the liquid phase separated from the vapor-liquid two-phase fluid. An outlet of the introduction tube and a delivery port of the delivery tube are located axially inside the outer tube by respectively predetermined axial distances while facing each other with a predetermined axial distance therebetween.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: December 20, 2005
    Assignee: Maruyasu Industries Co. Ltd.
    Inventors: Yasufumi Sakakibara, Haruhiko Kamino
  • Publication number: 20040134640
    Abstract: Providing a multi-tube heat exchanger capable of increasing heat exchanging performance without increasing its heat transmitting area and solving a problem on drop in heat exchanging efficiency due to adhering pollutant or the like. A multi-tube heat exchanger comprising an inner tube (heat transmitting tube) group in which a first fluid passes and an outer tube (body) in which a second fluid passes, both ends of each multiple heat transmitting tubes being held and disposed on introduction/discharge side holding plates located on each of first fluid introduction side and first fluid discharge side. The heat transmitting tube is constituted of only a heat transmitting tube main body 114 and a number of lump-like projections are formed at a predetermined interval in the length direction on one or both of opposing wall faces on longer sides of the heat transmitting tube main body 114.
    Type: Application
    Filed: October 10, 2003
    Publication date: July 15, 2004
    Inventors: Yasufumi Sakakibara, Naruki Harada
  • Publication number: 20030115844
    Abstract: A vapor-liquid separator includes an outer tube, an introduction tube, a delivery tube, and a discharge tube. The introduction tube allows passage of a vapor-liquid two-phase fluid in a swirling state. The delivery tube allows passage of the vapor phase separated from the vapor-liquid two-phase fluid. The introduction tube and the delivery tube are coaxially provided at the corresponding axially opposite ends of the outer tube. The discharge tube is provided on the outer tube in the vicinity of the axial end face of the outer tube on the side toward the introduction tube. The discharge tube is adapted to discharge therefrom the liquid phase separated from the vapor-liquid two-phase fluid. An outlet of the introduction tube and a delivery port of the delivery tube are located axially inside the outer tube by respectively predetermined axial distances while facing each other with a predetermined axial distance therebetween.
    Type: Application
    Filed: December 24, 2002
    Publication date: June 26, 2003
    Inventors: Yasufumi Sakakibara, Haruhiko Kamino
  • Publication number: 20020030996
    Abstract: A method of manufacturing a surface-emitting backlight is provided with the steps of forming a lead frame and resin-made molded case by insert molding, attaching light sources, which are red, blue and green LED dies, to contacts of the lead frame provided in a hollow space of the molded case, forming a light guide section by filling the hollow space with a transparent or semitransparent resin, and thereafter attaching a reflector sheet, and lens sheets (or diffuser sheets) in accordance with the applications of the backlight.
    Type: Application
    Filed: September 13, 2001
    Publication date: March 14, 2002
    Applicant: RYODEN TRADING COMPANY, LIMITED
    Inventor: Yasufumi Sakakibara