Patents by Inventor Norihiro Inaoka
Norihiro Inaoka 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: 7586263Abstract: A high pressure discharge lamp, in which an anode and a cathode are disposed opposite each other in a bulb, achieves a long service life due to thorium (Th) being stably supplied to the cathode tip for a long time after lamp operation has been commence since the formation of the flicker phenomenon is suppressed over a long time due to the cathode being made of tungsten which contains thorium oxide on a surface space from the cathode tip, a carbide layer of tungsten carbide is formed and the cathode being bordered by an emitter containing body of tungsten which contains thorium dioxide, and a carbide layer of tungsten carbide being formed at least in a region bordering the cathode.Type: GrantFiled: March 29, 2007Date of Patent: September 8, 2009Assignee: Ushiodenki Kabushiki KaishaInventors: Shunichi Morimoto, Norihiro Inaoka, Yasuro Kikuchi
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Patent number: 7471885Abstract: A filament lamp in which the article to be treated can be uniformly heated, and in which the disadvantage of poor sealing or the like does not arise even in the case of inserting a host of metal foils into a hermetically sealed portion is achieved in a filament lamp in the bulb of which there are several filament bodies, in which filaments and leads for supply of power to the filaments are connected to one another, and in which, on an end of the bulb, there is a hermetically sealed portion in which there is a rod-shaped sealing insulator on the periphery of which several electrically conductive components that are connected to the filaments are arranged spaced from one another.Type: GrantFiled: November 30, 2006Date of Patent: December 30, 2008Assignee: Ushiodenki Kabushiki KaishaInventors: Yoichi Mizukawa, Norihiro Inaoka, Tetsuya Kitagawa
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Patent number: 7397191Abstract: A high pressure discharge lamp in which the cathode has a cylindrical body part and a conical part which is doped with thorium dioxide (ThO2), and with a diameter which decreases in a direction from the body part toward the tip area of the conical part by at least one light receiving surface area being formed between the body part and the tip area of the cone in a base part of the conical part. The light receiving area lies at an angle with respect to the center axis of the conical part and the body part, said angle which is measured from the side of the body part being greater than the angle of inclination which is formed between the outer periphery of the conical part in the tip area of the cone and the center axis.Type: GrantFiled: November 3, 2004Date of Patent: July 8, 2008Assignee: Ushiodenki Kabushiki KaishaInventors: Yasuro Kikuchi, Norihiro Inaoka, Kyosuke Fujina
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Publication number: 20070228982Abstract: A high pressure discharge lamp, in which an anode and a cathode are disposed opposite each other in a bulb, achieves a long service life due to thorium (Th) being stably supplied to the cathode tip for a long time after lamp operation has been commence since the formation of the flicker phenomenon is suppressed over a long time due to the cathode being made of tungsten which contains thorium oxide on a surface space from the cathode tip, a carbide layer of tungsten carbide is formed and the cathode being bordered by an emitter containing body of tungsten which contains thorium dioxide, and a carbide layer of tungsten carbide being formed at least in a region bordering the cathode.Type: ApplicationFiled: March 29, 2007Publication date: October 4, 2007Applicant: USHIODENKI KABUSHIKI KAISHAInventors: Shunichi MORIMOTO, Norihiro INAOKA, Yasuro KIKUCHI
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Publication number: 20070120454Abstract: A filament lamp in which the article to be treated can be uniformly heated, and in which the disadvantage of poor sealing or the like does not arise even in the case of inserting a host of metal foils into a hermetically sealed portion is achieved in a filament lamp in the bulb of which there are several filament bodies, in which filaments and leads for supply of power to the filaments are connected to one another, and in which, on an end of the bulb, there is a hermetically sealed portion in which there is a rod-shaped sealing insulator on the periphery of which several electrically conductive components that are connected to the filaments are arranged spaced from one another.Type: ApplicationFiled: November 30, 2006Publication date: May 31, 2007Applicant: USHIODENKI KABUSHIKI KAISHAInventors: Yoichi MIZUKAWA, Norihiro INAOKA, Tetsuya KITAGAWA
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Patent number: 7098597Abstract: A xenon lamp in which fluctuation of the arc can be suppressed and the time until formation of the flicker phenomenon delayed by having an anode with a flattened or rounded anode tip, a rounded or flattened back end; a portion with a diameter that gradually increases from the anode tip toward the back end of the anode; a portion with a decreasing diameter located behind the portion with the increasing diameter of an axial length which is greater than the length in the axial direction of the portion with an increasing diameter; and a portion with a maximum outside diameter formed in a transition area between the portion with the increasing diameter and the portion with a decreasing diameter, and that the transition area between the portion with the increasing diameter and the portion with the decreasing diameter is formed to be continuous.Type: GrantFiled: March 29, 2004Date of Patent: August 29, 2006Assignee: Ushiodenki Kabushiki KaishaInventors: Norihiro Inaoka, Katsuoki Miyasu, Kyosuke Fujina
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Publication number: 20060170318Abstract: A discharge lamp of the short arc type in which the temperature rise of the sealing components of graded glass within the sealing part can be suppressed and in which the sealing components are not damaged is achieved, in a such lamp that has sealing parts which border the arc tube on opposite sides, and lead pins which each support a electrode in the arc tube, and are sealed within the respective sealing part by graded glass, by a component for cooling the sealing part being provided on the outside of at least one of the sealing parts, and by a component for cooling the lead pin being provided on at least one of the lead pins, in the area in which it projects outward from the graded glass within the sealing part which is provided with the component for cooling the sealing part.Type: ApplicationFiled: January 27, 2006Publication date: August 3, 2006Applicant: Ushiodenki Kabushiki KaishaInventors: Shunichi Morimoto, Norihiro Inaoka, Kyosuke Fujina
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Patent number: 6949881Abstract: A discharge lamp of the short arc type in which a lead pin, located within a hermetically sealed tube, is prevented from being irradiated with light. Such a construction prevents the lead pin from undergoing a temperature rise thereby preventing the destruction of the hermetically sealed tube. The discharge lamp of the short arc type includes an arc tube adjoined laterally by hermetically sealed tubes through which a lead pin, which supports an electrode, is routed. The hermetically sealed tubes are sealed by graded glass on the lead pins, and the lead pin is prevented from being irradiated with light by providing the outside surface of the hermetically sealed tube, at least in part, with a high emissivity material and then providing a reflectivity material on the exterior surface of the emissivity material.Type: GrantFiled: June 13, 2003Date of Patent: September 27, 2005Assignee: Ushiodenki Kabushiki KaishaInventors: Norihiro Inaoka, Takafumi Kimura
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Publication number: 20050099121Abstract: A high pressure discharge lamp in which the cathode has a cylindrical body part and a conical part which is doped with thorium dioxide (ThO2), and with a diameter which decreases in a direction from the body part toward the tip area of the conical part by at least one light receiving surface area being formed between the body part and the tip area of the cone in a base part of the conical part. The light receiving area lies at an angle with respect to the center axis of the conical part and the body part, said angle which is measured from the side of the body part being greater than the angle of inclination which is formed between the outer periphery of the conical part in the tip area of the cone and the center axis.Type: ApplicationFiled: November 3, 2004Publication date: May 12, 2005Applicant: Ushiodenki Kabushiki KaishaInventors: Yasuro Kikuchi, Norihiro Inaoka, Kyosuke Fujina
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Publication number: 20040189206Abstract: A xenon lamp in which fluctuation of the arc can be suppressed and the time until formation of the flicker phenomenon delayed by having an anode with a flattened or rounded anode tip, a rounded or flattened back end; a portion with a diameter that gradually increases from the anode tip toward the back end of the anode; a portion with a decreasing diameter located behind the portion with the increasing diameter of an axial length which is greater than the length in the axial direction of the portion with an increasing diameter; and a portion with a maximum outside diameter formed in a transition area between the portion with the increasing diameter and the portion with a decreasing diameter, and that the transition area between the portion with the increasing diameter and the portion with the decreasing diameter is formed to be continuous.Type: ApplicationFiled: March 29, 2004Publication date: September 30, 2004Applicant: Ushiodenki Kabushiki KaishaInventors: Norihiro Inaoka, Katsuoki Miyasu, Kyosuke Fujina
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Publication number: 20030234615Abstract: A discharge lamp of the short arc type in which a lead pin, located within a hermetically sealed tube, is prevented from being irradiated with light. Such a construction prevents the lead pin from undergoing a temperature rise thereby preventing the destruction of the hermetically sealed tube. The discharge lamp of the short arc type includes an arc tube adjoined laterally by hermetically sealed tubes through which a lead pin, which supports an electrode, is routed. The hermetically sealed tubes are sealed by graded glass on the lead pins, and the lead pin is prevented from being irradiated with light by providing the outside surface of the hermetically sealed tube, at least in part, with a high emissivity material and then providing a reflectivity material on the exterior surface of the emissivity material.Type: ApplicationFiled: June 13, 2003Publication date: December 25, 2003Applicant: USHIODENKI KABUSHIKI KAISHAInventors: Norihiro Inaoka, Takafumi Kimura