Patents by Inventor Shigeki Kikuyama

Shigeki Kikuyama 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: 7744235
    Abstract: In a lighting device, suppose a distance between centers of linear light sources is D and a distance between the linear light sources and a light control member is H and a function representing an outgoing light intensity toward a normal direction at a position coordinate X (light source position shall be X=0) and f(X?D)+f(X)+f(X+D), in a range of ?D/2?X?D/2, a ratio between g(X)min and g(X)max is 0.6 or more, a minimum value Xmin is in a range of ?3.0D?Xmin??0.5D, a maximum value Xmax is in a range of 0.5?Xmax?3.0D, and a cross-sectional shape of a given convex portion in X direction is formed of areas with (2N+1) number of different gradients represented by a certain relationship obtained from D, H and X.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: June 29, 2010
    Assignee: KURARAY Co., Ltd.
    Inventors: Satoko Horikoshi, Ikuo Onishi, Shigeki Kikuyama, Yoshiki Mukoo, Tsuyoshi Kanda
  • Publication number: 20090225538
    Abstract: In a lighting device, suppose a distance between centers of linear light sources is D and a distance between the linear light sources and a light control member is H and a function representing an outgoing light intensity toward a normal direction at a position coordinate X (light source position shall be X=0) and f(X?D)+f(X)+f(X+D), in a range of ?D/2?X?D/2, a ratio between g(X)min and g(X)max is 0.6 or more, a minimum value Xmin is in a range of ?3.0 D?Xmin??0.5 D, a maximum value Xmax is in a range of 0.5?Xmax?3.0 D, and a cross-sectional shape of a given convex portion in X direction is formed of areas with (2N+1) number of different gradients represented by a certain relationship obtained from D, H and X.
    Type: Application
    Filed: June 26, 2006
    Publication date: September 10, 2009
    Applicant: KURARAY CO., LTD.
    Inventors: Satoko Horikoshi, Ikuo Onishi, Shigeki Kikuyama, Yoshiki Mukoo, Tsuyoshi Kanda
  • Patent number: 7556393
    Abstract: The invention is directed to a lighting system having a reflector, light sources and a light control member sequentially disposed from a light incident side to a light outgoing side. Preferably used for large displays requiring high uniformity, this invention eliminates lamp image and removes the necessity to do light source repositioning, while enabling luminance in the exit plane to achieve excellent luminosity and uniformity. This invention achieves total light transmittance of more that 50% when light is incident at a predetermined angle ? from the normal direction of the incident plane and achieves 1.05-3 times more total light transmittance than when the light is from a direction normal to the incident plane. This is achieved by the light control member by controlling the ration between total light transmittance in the positions of greater transmittance and the total transmittance in the positions of lesser transmittance.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: July 7, 2009
    Assignee: Kuraray Co., Ltd.
    Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
  • Patent number: 7237930
    Abstract: The invention is directed to a lighting system having a reflector, light sources and a light control member sequentially disposed from a light incident side to a light outgoing side. Preferably used for large displays requiring high uniformity, this invention eliminates lamp image and removes the necessity to do light source repositioning, while enabling luminance in the exit plane to achieve excellent luminosity and uniformity. This invention achieves total light transmittance of more than 50% when light is incident at a predetermined angle a from the normal direction of the incident plane and achieves 1.05–3 times more total light transmittance than when the light is from a direction normal to the incident plane. This is achieved by the light control member by controlling the ratio between total light transmittance in the positions of greater transmittance and the total transmittance in the positions of lesser transmittance.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: July 3, 2007
    Assignee: Kuraray Co., Ltd.
    Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
  • Publication number: 20070127265
    Abstract: The invention is directed to a lighting system having a reflector, light sources and a light control member sequentially disposed from a light incident side to a light outgoing side. Preferably used for large displays requiring high uniformity, this invention eliminates lamp image and removes the necessity to do light source repositioning, while enabling luminance in the exit plane to achieve excellent luminosity and uniformity. This invention achieves total light transmittance of more that 50% when light is incident at a predetermined angle ? from the normal direction of the incident plane and achieves 1.05-3 times more total light transmittance than when the light is from a direction normal to the incident plane. This is achieved by the light control member by controlling the ration between total light transmittance in the positions of greater transmittance and the total transmittance in the positions of lesser transmittance.
    Type: Application
    Filed: January 31, 2007
    Publication date: June 7, 2007
    Applicant: Kuraray Co., Ltd.
    Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
  • Publication number: 20050243551
    Abstract: A lighting system, a reflector, light sources and a light control member are sequentially disposed from a light incident side to a light outgoing side. Preferably used for large displays requiring high uniformity, this invention eliminates lamp image and removes the necessity to do light source repositioning, while enabling luminance in the exit plane to achieve excellent luminosity and uniformity. This invention achieves total transmittance of more than 50% when light is incident on the normal direction of the incident plane at a predetermined angle ? and achieves 1.05-3 times more total transmittance than when the light is normally incident. This is achieved by using a light control member such as the light diffusion plate described herein, which is conformed to obtain required luminosity and uniformity by controlling the ratio between total transmittance in the positions of greater transmittance and the total transmittance in the positions of lesser transmittance.
    Type: Application
    Filed: April 11, 2005
    Publication date: November 3, 2005
    Applicant: Kuraray Co., Ltd.
    Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
  • Patent number: 6855824
    Abstract: The present invention provides a production method of quinoline derivative (V) wherein each symbol is as defined in the Specification, which includes reacting quinolinecarbaldehyde (I) with any of the compounds (II) to (IV) in the presence of a base, followed by hydrolysis.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: February 15, 2005
    Assignees: Kuraray Co., Ltd., Nissan Chemical Industries, Ltd.
    Inventors: Kuniaki Tatsuta, Shigeki Kikuyama, Yoshin Tamai
  • Publication number: 20030125355
    Abstract: The present invention provides a production method of quinoline derivative (V) 1
    Type: Application
    Filed: November 21, 2002
    Publication date: July 3, 2003
    Inventors: Kuniaki Tatsuta, Shigeki Kikuyama, Yoshin Tamai
  • Patent number: 6342606
    Abstract: A pyridine alcohol derivative represented by General Formula III (where A represents a divalent organic group which may contain one to three oxygen atoms, nitrogen atoms and/or sulfur atoms, wherein A may form a 5-, 6-, 7-, or 8-membered ring together with two bonded carbon atoms, where said ring may form a condensed ring with one or more additional rings; R6 represents a hydrogen atom, —CHR1R2, or an alkenyl group, an aryl group or an aralkyl group which may be substituted; R1 and R2 each independently represent a hydrogen atom or a hydrocarbon group which may be substituted; and R represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group which may be substituted), is produced by: reacting a pyridine ester derivative represented by General Formula I-1
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: January 29, 2002
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
  • Publication number: 20010031871
    Abstract: A pyridine alcohol derivative represented by General Formula III 1
    Type: Application
    Filed: May 23, 2001
    Publication date: October 18, 2001
    Applicant: KURARAY CO., LTD.
    Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
  • Patent number: 6265580
    Abstract: A pyridine alcohol derivative represented by General Formula III (where A represents a divalent organic group which may contain one to three oxygen atoms, nitrogen atoms and/or sulfur atoms, wherein A may form a 5-, 6-, 7-, or 8-membered ring together with two bonded carbon atoms, where said ring may form a condensed ring with one or more additional rings; R5 represents a hydrogen atom, —CHR1R2, or an alkenyl group, an aryl group or an aralkyl group which may be substituted; R1 and R2 each independently represent a hydrogen atom or a hydrocarbon group which may be substituted; and R6 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group which may be substituted), is produced by: reacting a pyridine ester derivative represented by General Formula I-1  (where Z1 represents —COX; X represents an alkoxyl group, an alkenyloxy group, an aryloxy group or an aralkyloxy group which may be substituted; and A is the same as a
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: July 24, 2001
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
  • Patent number: 6111111
    Abstract: A pyridine alcohol derivative represented by General Formula III ##STR1## (where A represents a divalent organic group which may contain one to three oxygen atoms, nitrogen atoms and/or sulfur atoms, wherein A may form a 5-, 6-, 7-, or 8-membered ring together with two bonded carbon atoms, where said ring may form a condensed ring with one or more additional rings; R.sup.5 represents a hydrogen atom, --CHR.sup.1 R.sup.2, or an alkenyl group, an aryl group or an aralkyl group which may be substituted; R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a hydrocarbon group which may be substituted; and R.sup.6 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group which may be substituted), is produced by:reacting a pyridine ester derivative represented by General Formula I-1 ##STR2## (where Z.sup.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: August 29, 2000
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama