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).
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Patent number: 7744235Abstract: 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: GrantFiled: June 26, 2006Date of Patent: June 29, 2010Assignee: KURARAY Co., Ltd.Inventors: Satoko Horikoshi, Ikuo Onishi, Shigeki Kikuyama, Yoshiki Mukoo, Tsuyoshi Kanda
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Publication number: 20090225538Abstract: 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: ApplicationFiled: June 26, 2006Publication date: September 10, 2009Applicant: KURARAY CO., LTD.Inventors: Satoko Horikoshi, Ikuo Onishi, Shigeki Kikuyama, Yoshiki Mukoo, Tsuyoshi Kanda
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Patent number: 7556393Abstract: 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: GrantFiled: January 31, 2007Date of Patent: July 7, 2009Assignee: Kuraray Co., Ltd.Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
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Patent number: 7237930Abstract: 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: GrantFiled: April 11, 2005Date of Patent: July 3, 2007Assignee: Kuraray Co., Ltd.Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
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Publication number: 20070127265Abstract: 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: ApplicationFiled: January 31, 2007Publication date: June 7, 2007Applicant: Kuraray Co., Ltd.Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
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Publication number: 20050243551Abstract: 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: ApplicationFiled: April 11, 2005Publication date: November 3, 2005Applicant: Kuraray Co., Ltd.Inventors: Ikuo Onishi, Satoko Horikoshi, Toshiyuki Ito, Shigeki Kikuyama
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Patent number: 6855824Abstract: 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: GrantFiled: February 19, 2001Date of Patent: February 15, 2005Assignees: Kuraray Co., Ltd., Nissan Chemical Industries, Ltd.Inventors: Kuniaki Tatsuta, Shigeki Kikuyama, Yoshin Tamai
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Publication number: 20030125355Abstract: The present invention provides a production method of quinoline derivative (V) 1Type: ApplicationFiled: November 21, 2002Publication date: July 3, 2003Inventors: Kuniaki Tatsuta, Shigeki Kikuyama, Yoshin Tamai
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Patent number: 6342606Abstract: 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-1Type: GrantFiled: May 23, 2001Date of Patent: January 29, 2002Assignee: Kuraray Co., Ltd.Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
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Publication number: 20010031871Abstract: A pyridine alcohol derivative represented by General Formula III 1Type: ApplicationFiled: May 23, 2001Publication date: October 18, 2001Applicant: KURARAY CO., LTD.Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
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Patent number: 6265580Abstract: 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 aType: GrantFiled: March 17, 2000Date of Patent: July 24, 2001Assignee: Kuraray Co., Ltd.Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama
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Patent number: 6111111Abstract: 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: GrantFiled: October 21, 1998Date of Patent: August 29, 2000Assignee: Kuraray Co., Ltd.Inventors: Hideki Matsuda, Goro Asanuma, Takanobu Shin, Manzo Shiono, Shigeki Kikuyama