Patents by Inventor Haruo Nagai
Haruo Nagai 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: 8125151Abstract: In a high-pressure discharge lamp that includes a bulb formed from a light emitting part having a discharge space therein and a pair of sealing parts connected to the light emitting part, and an electrode pair disposed within the discharge space, a section of a proximity conductor is wound substantially spirally around one of the sealing parts within a predetermined range from the light emitting part, while the remaining section of the proximity conductor crosses over the light emitting part and is electrically connected to the electrode nearer the other sealing part. By initiating a discharge after applying a high-frequency voltage of 1 kHz to 1 MHz to a high-pressure mercury lamp having this structure, the breakdown voltage can be suppressed to at least 8 kV.Type: GrantFiled: June 19, 2008Date of Patent: February 28, 2012Assignee: Panasonic CorporationInventors: Masahiro Yamamoto, Syunsuke Ono, Minoru Ozasa, Tsuyoshi Ichibakase, Tomoyuki Seki, Takashi Tsutatani, Haruo Nagai
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Patent number: 8076852Abstract: In a high-pressure discharge lamp that includes a bulb formed from a light emitting part having a discharge space therein and a pair of sealing parts connected to the light emitting part, and an electrode pair disposed within the discharge space, a section of a proximity conductor is wound substantially spirally around one of the sealing parts within a predetermined range from the light emitting part, while the remaining section of the proximity conductor crosses over the light emitting part and is electrically connected to the electrode nearer the other sealing part. By initiating a discharge after applying a high-frequency voltage of 1 kHz to 1 MHz to a high-pressure mercury lamp having this structure, the breakdown voltage can be suppressed to at least 8 kV.Type: GrantFiled: April 9, 2004Date of Patent: December 13, 2011Assignee: Panasonic CorporationInventors: Masahiro Yamamoto, Syunsuke Ono, Minoru Ozasa, Tsuyoshi Ichibakase, Tomoyuki Seki, Takashi Tsutatani, Haruo Nagai
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Publication number: 20080258622Abstract: In a high-pressure discharge lamp that includes a bulb formed from a light emitting part having a discharge space therein and a pair of sealing parts connected to the light emitting part, and an electrode pair disposed within the discharge space, a section of a proximity conductor is wound substantially spirally around one of the sealing parts within a predetermined range from the light emitting part, while the remaining section of the proximity conductor crosses over the light emitting part and is electrically connected to the electrode nearer the other sealing part. By initiating a discharge after applying a high-frequency voltage of 1 kHz to 1 MHz to a high-pressure mercury lamp having this structure, the breakdown voltage can be suppressed to at least 8 kV.Type: ApplicationFiled: June 19, 2008Publication date: October 23, 2008Inventors: Masahiro Yamamoto, Syunsuke Ono, Minoru Ozasa, Tsuyoshi Ichibakase, Tomoyuki Seki, Takashi Tsutatani, Haruo Nagai
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Patent number: 7272968Abstract: The configuration comprises a shaping member 3 having a substantially rectangular shape and shaping the inner surface side of a bent portion 1b, a worm gear 2 slidably linked with the shaping member 3 and gradually reducing the distance between the shaping members 3 for sequentially feeding the shaping member 3 from one side to the other side, and a reference member 4 arranged so that the upper end surface of the bent portion 1b comes into contact with its reference surface, and the distance between the shaping members 3 is gradually reduced to a predetermined fin pitch and the upper end surface of the bent portion 1b is shaped into a predetermined shape by rotating the worm gear 2 after the plurality of bent portions 1b are arranged at the shaping members 3. Due to this, it is possible to shape the bent portion into a continuous and stable shape.Type: GrantFiled: May 1, 2006Date of Patent: September 25, 2007Assignee: Denso CorporationInventors: Shizuo Maruo, Yukinori Hatano, Fumiaki Nakamura, Haruo Nagai
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Publication number: 20060254334Abstract: The configuration comprises a shaping member 3 having a substantially rectangular shape and shaping the inner surface side of a bent portion 1b, a worm gear 2 slidably linked with the shaping member 3 and gradually reducing the distance between the shaping members 3 for sequentially feeding the shaping member 3 from one side to the other side, and a reference member 4 arranged so that the upper end surface of the bent portion 1b comes into contact with its reference surface, and the distance between the shaping members 3 is gradually reduced to a predetermined fin pitch and the upper end surface of the bent portion 1b is shaped into a predetermined shape by rotating the worm gear 2 after the plurality of bent portions 1b are arranged at the shaping members 3. Due to this, it is possible to shape the bent portion into a continuous and stable shape.Type: ApplicationFiled: May 1, 2006Publication date: November 16, 2006Applicant: Denso CorporationInventors: Shizuo Maruo, Yukinori Hatano, Fumiaki Nakamura, Haruo Nagai
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Publication number: 20060197475Abstract: In a high-pressure discharge lamp that includes a bulb formed from a light emitting part having a discharge space therein and a pair of sealing parts connected to the light emitting part, and an electrode pair disposed within the discharge space, a section of a proximity conductor is wound substantially spirally around one of the sealing parts within a predetermined range from the light emitting part, while the remaining section of the proximity conductor crosses over the light emitting part and is electrically connected to the electrode nearer the other sealing part. By initiating a discharge after applying a high-frequency voltage of 1 kHz to 1 MHz to a high-pressure mercury lamp having this structure, the breakdown voltage can be suppressed to at least 8 kV.Type: ApplicationFiled: April 9, 2004Publication date: September 7, 2006Inventors: Masahiro Yamamoto, Syunsuke Ono, Minoru Ozasa, Tsuyoshi Ichibakase, Tomoyuki Seki, Takashi Tsutatani, Haruo Nagai
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Patent number: 6545430Abstract: A high pressure discharge lamp having a pair of electrodes with a space of 0.5 mm to 2.0 mm inclusive between them and disposed in an arc tube. An electrical discharge takes place between the electrodes. Each of the electrodes has an electrode rod and a head that is provided at the discharge side end of the electrode rod and having a larger diameter than the electrode rod. A surface of the head being opposite to the other electrode is convexly curved and a protruding part is formed in the vicinity of the center portion of the end of the head.Type: GrantFiled: April 27, 2001Date of Patent: April 8, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shunsuke Ono, Yoshiki Kitahara, Haruo Nagai
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Publication number: 20010038267Abstract: A high pressure discharge lamp having a pair of electrodes with a space of 0.5 mm to 2.0 mm inclusive between them and disposed in an arc tube. An electrical discharge takes place between the electrodes. Each of the electrodes has an electrode rod and a head that is provided at the discharge side end of the electrode rod and having a larger diameter than the electrode rod. A surface of the head being opposite to the other electrode is convexly curved and a protruding part is formed in the vicinity of the center portion of the end of the head.Type: ApplicationFiled: April 27, 2001Publication date: November 8, 2001Inventors: Shunsuke Ono, Yoshiki Kitahara, Haruo Nagai
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Patent number: 5015099Abstract: A light source has a tunable wavelength single mode semiconductor laser. The laser outputs a single mode laser beam having a wavelength tuned in accordance with a drive current and emits, for an object to be detected, at least a first laser beam having a first wavelength which is absorbed by a gas to be detected and a second laser beam having a second wavelength which is not absorbed by the gas to be detected. A controller switches the drive current having a predetermined value corresponding to the first or second wavelength at a predetermined period and supplies the drive current to the laser and controls the drive current having the predetermined value corresponding to the first or second wavelengths so that the first or second laser beams are alternately output from the laser with substantially the same power while the first and second wavelengths are maintained.Type: GrantFiled: March 12, 1990Date of Patent: May 14, 1991Assignee: Anritsu CorporationInventors: Haruo Nagai, Kiyoji Uehara, Masafumi Aizawa
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Patent number: 4901123Abstract: According to this invention, a superluminescent diode includes a current injection portion having a current injection electrode formed adjacent to a first end face, a light-absorption portion contiguous with the current injection portion; and a waveguide continuously formed to extend from the current injection portion to the light-absorption portion. The waveguide is constituted by an active layer and a member which completely buries the active layer, has a bandgap larger than that of the active layer, and is formed of a material having a small refractive index. The waveguide of the current injection portion is linearly formed to be perpendicular to the first end face. The waveguide of the light-absorption portion has an end portion for guiding reflected light in a direction different from a propagation direction of light propagating through the waveguide.Type: GrantFiled: November 28, 1988Date of Patent: February 13, 1990Assignee: Nippon Telegraph and Telephone CorporationInventors: Yoshio Noguchi, Haruo Nagai, Kazumasa Takada, Juichi Noda
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Patent number: 4791184Abstract: A methacrylic resin molding material, comprising a partially cross-linked polymer gel obtained by partially polymerizing a mixture comprising (A) a resin raw material selected from the group consisting of monomeric alkyl methacrylates, .alpha., .beta.Type: GrantFiled: June 29, 1987Date of Patent: December 13, 1988Assignee: Kyowa Gas Chemical Industry Co., Ltd.Inventors: Haruo Nagai, Tetsuo Suzuki, Kazuhiro Sato
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Patent number: 4426704Abstract: In a semiconductor laser, a laminated multi-layer body is on a prescribed region of the surface of a semiconductor substrate of first conductivity type, and a burying laminated layer body surrounds the laminated layer body in contact with the lateral wall thereof. The laminated layer body includes a first cladding layer having the first conductivity type, a first active layer, a second cladding layer having the opposite conductivity type (second conductivity type) to that of the semiconductor substrate, a second active layer and a third cladding layer of the first conductivity type. The burying laminated layer body includes a semiconductor electrode layer of the second conductivity type and low specific resistivity which substantially contacts the second cladding layer, and two groups of burying layers respectively provided on the prescribed regions of the top and bottom surface of said semiconductor electrode layer.Type: GrantFiled: November 2, 1981Date of Patent: January 17, 1984Assignee: Nippon Telegraph & Telephone Public CorporationInventors: Haruo Nagai, Yoshio Noguchi, Kenichiro Takahei
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Patent number: 4182821Abstract: A method for producing a lead containing monomer composition comprising reacting a mixture comprising (1) at least one monomer selected from the group consisting of alkyl methacrylate having 1-4 carbon atoms in an alkyl group, hydroxyalkyl acrylate, hydroxyalkyl methacrylate and styrene, (2) acrylic or methacrylic acid, (3) an organic acid having the general formula: R.sub.1 COOH, wherein R.sub.1 is hydrocarbon residue having 5-20 carbon atoms and optionally (4) an organic acid having the general formula: R.sub.2 COOH, wherein R.sub.2 is hydrocarbon residue having 2-4 carbon atoms with lead monoxide. The composition is polymerized to obtain a radiation shielding polymer.Type: GrantFiled: November 14, 1977Date of Patent: January 8, 1980Assignee: Kyowa Gas Chemical Industry Co., Ltd.Inventors: Haruo Nagai, Hiroshi Uehara, Kunikazu Nunokawa
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Patent number: 4129524Abstract: A radiation shielding material of a composition containing a polymer comprising (A) at least one essential monomer selected from the group consisting of alkyl methacrylate having 1 - 4 carbon atoms in an alkyl group, hydroxyalkyl acrylate, hydroxyalkyl methacrylate and styrene and (B) lead acrylate or lead methacrylate, and a lead carboxylate represented by the general formula: (RCOO).sub.a Pb, a being an integer equal to the valency of lead and R representing a saturated or unsaturated hydrocarbon residue having 5 - 20 carbon atoms, wherein the ratio x (% by weight) of the lead acrylate or lead methacrylate to the total constituent monomer in the polymer and the compounding ratio y (parts by weight) of the lead carboxylate to 100 parts by weight of said total monomer in said composition satisfy any one of the following three formulas I, II and III:200.gtoreq.y.gtoreq.2, where 9.ltoreq.x.ltoreq.30 (I)200.gtoreq.y.gtoreq.2/5(x - 30)+ 2, where 30.ltoreq.x.ltoreq.75(II) and200.gtoreq.y.gtoreq.Type: GrantFiled: July 13, 1977Date of Patent: December 12, 1978Assignee: Kyowa Gas Chemical Industry Co., Ltd.Inventors: Haruo Nagai, Hiroshi Uehara, Kunikazu Nunokawa
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Patent number: 4127414Abstract: A pattern-forming material comprises a substrate and a radiation sensitive chalcogenide layer disposed thereon. The radiation sensitive chalcogenide layer consists of an amorphous layer having a chemical composition of 75 to 95 mol% of selenium and 5 to 25 mol% of germanium and a silver layer superimposed thereon. The pattern-forming materials having the radiation sensitive chalcogenide layer of the invention are particularly useful in lithographic applications.Type: GrantFiled: June 8, 1977Date of Patent: November 28, 1978Assignee: Nippon Telegraph and Telephone Public CorporationInventors: Akira Yoshikawa, Haruo Nagai, Osamu Ochi, Kazuko Nakano, Yoshihiko Mizushima
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Patent number: 4011277Abstract: Novel 2,6,10,15,19,23-hexamethyltetracosane-10,15-diol derivatives. Such derivatives are prepared by hydrogenation of 2,6,10,15,19,23-hexamethyltetracosa-11,13-diyne-10,15-diol derivatives and used as starting materials for preparing squalane.Type: GrantFiled: March 25, 1974Date of Patent: March 8, 1977Assignees: Kuraray Co., Ltd., Kyowa Gas Chemical Industry Co., Ltd.Inventors: Takashi Nishida, Yoichi Ninagawa, Kazuo Itoi, Yutaka Omura, Haruo Nagai