Patents by Inventor Katsumasa Tanaka
Katsumasa Tanaka 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: 7933778Abstract: A serial transmission system has a transmission signal generator and a transmission signal receiver. The transmission signal generator generates a digital audio signal of multi-channel based on information of a sampling frequency, and serially transmits the information of the sampling frequency together with the digital audio signal. The transmission signal receiver serially receives the information of the sampling frequency and the digital audio signal from the transmission signal generator, and detects change in a transmission clock based on the information of the sampling frequency.Type: GrantFiled: June 14, 2007Date of Patent: April 26, 2011Assignee: Renesas Electronics CorporationInventor: Katsumasa Tanaka
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Publication number: 20070299653Abstract: A serial transmission system has a transmission signal generator and a transmission signal receiver. The transmission signal generator generates a digital audio signal of multi-channel based on information of a sampling frequency, and serially transmits the information of the sampling frequency together with the digital audio signal. The transmission signal receiver serially receives the information of the sampling frequency and the digital audio signal from the transmission signal generator, and detects change in a transmission clock based on the information of the sampling frequency.Type: ApplicationFiled: June 14, 2007Publication date: December 27, 2007Applicant: NEC ELECTRONICS CORPORATIONInventor: Katsumasa TANAKA
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Patent number: 6962926Abstract: Compounds of formula A and formula B: and their pharmaceutically acceptable salts, compositions comprising them, methods for their use, and their use in the preparation of medicaments. The compounds are antagonists of MCP-1 function, and are useful in the prevention and treatment of chronic or acute inflammatory or autoimmune diseases, such as multiple sclerosis, and in the prevention and treatment of allergic hypersensitivity disorders.Type: GrantFiled: August 8, 2003Date of Patent: November 8, 2005Assignees: Telik, Inc., Sanwa Kagaku Kenkyusho Co., Ltd.Inventors: Edgardo Laborde, Louise Robinson, Fanying Meng, Brian T. Peterson, Hugo O. Villar, Steven E. Anuskiewicz, Wenli Ma, Yukiharu Matsumoto, Kunihisa Baba, Hideaki Inagaki, Katsumasa Tanaka, Yoshiro Ishiwata, Shoji Yokochi, Masayuki Okamoto, Takashi Nakamura, Atsushi Miyachi, Mitsuaki Takeuchi, Kouji Matsushima
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Publication number: 20040198719Abstract: Compounds of formula A and formula B: 1Type: ApplicationFiled: August 8, 2003Publication date: October 7, 2004Inventors: Edgardo Laborde, Louise M. Robinson, Fanying Meng, Brian T. Peterson, Hugo O. Villar, Steven E. Anuskiewicz, Wenli Ma, Yukiharu Matsumoto, Kunihisa Baba, Hideaki Inagaki, Katsumasa Tanaka, Yoshiro Ishiwata, Shoji Yokochi, Masayuki Okamoto, Takashi Nakamura, Atsushi Miyachi, Mitsuaki Takeuchi, Kouji Matsushima
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Patent number: 5634363Abstract: In a bending type mechanical descaling method, streak-like scales remain, which cause a die seizure in the subsequent drawing process. In the present invention, there is provided a quite new mechanical descaling technique capable of eliminating such streak-like scales. The new mechanical descaling method includes the step of passing a metal wire through a torsion generating portion for forcibly turning the metal wire around the axial center thereof while running the metal wire, thereby removing scales due to a difference in toughness between the metal wire and scales.Type: GrantFiled: June 21, 1995Date of Patent: June 3, 1997Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Tamotsu Shozaki, Kozo Katsube, Mamoru Murahashi, Katsumasa Tanaka, Yasuhiro Oki
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Patent number: 5337667Abstract: An ink washing device for use in a printing machine, including a spraying pipe. The pipe comprises a plurality of nozzles for spraying the washing fluid onto an ink roller. The washing fluid is supplied to the nozzle, via a washing fluid supply conduit, and compressed air is supplied to the nozzles, via an air supply conduit. The washing fluid supply conduit and the air supply passage communicate with a swirl chamber. The washing fluid and the compressed air are intermixed within the swirl chamber prior to being dispensed through the nozzles.Type: GrantFiled: April 6, 1993Date of Patent: August 16, 1994Assignee: Sakurai Graphic Systems CorporationInventors: Shoji Kinoshita, Hideo Nanbu, Katsumasa Tanaka
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Patent number: 5119850Abstract: An apparatus for processing a vibratory surface in which a processed object is hung on a hook, the hook is supported by the supporting frame having an air spring, the object is immersed in a surface treating liquid. The height of the air spring is automatically adjusted to the most suitable standard height in response to a weight of the processed object and then the surface treatment is carried out while the hook is being vibrated. An apparatus for performing this vibratory surface treatment method is provided.Type: GrantFiled: May 7, 1991Date of Patent: June 9, 1992Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Katsumasa Tanaka, Hitoshi Satoh, Heijiro Kawakami, Nobuaki Marukawa
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Patent number: 5035752Abstract: A method for processing a vibratory surface in which a processed object is hung on a hook, the hook is supported by the supporting frame having an air spring, the object is immersed in a surface treating liquid. The height of the air spring is automatically adjusted to the most suitable standard height in response to a weight of the processed object and then the surface treatment is carried out while the hook is being vibrated. An apparatus for performing this vibratory surface treatment method is provided.Type: GrantFiled: June 20, 1990Date of Patent: July 30, 1991Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Katsumasa Tanaka, Hitoshi Satoh, Heijiro Kawakami, Nobuaki Marukawa
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Patent number: 4432792Abstract: A material for steel wool is disclosed which essentially consists of 0.05 to 0.20% of C, up to 0.10% of Si, 0.50 to 1.30% of Mn, 0.035 to 0.10% of P, up to 0.04% of S,0.05 to 0.15% of N and the balance Fe. In this material, Al.sub.2 O.sub.3 inclusions with sizes not smaller than 3 microns are suppressed to a level not greater than 20 ppm and when the content of the Al.sub.2 O.sub.3 inclusions (3 microns and over) is in the range of 5 to 20 ppm, Al.sub.2 O.sub.3 inclusions with a size ranging from 3 to 10 microns is contained in an amount not smaller than 30% of the total content of Al.sub.2 O.sub.3 inclusions with sizes not smaller than 3 microns.Type: GrantFiled: September 30, 1982Date of Patent: February 21, 1984Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Heijiro Kawakami, Sadayoshi Furusawa, Toyofumi Hasegawa, Hitoshi Sato, Katsumasa Tanaka, Jiro Koarai
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Patent number: 4402757Abstract: This invention discloses a method of vibrating coiled wires in a circumferential motion in a solution bath. The method comprises the steps of suspending a set of coiled wires from a hook whose supporting portion extends parallel to a beam and which is secured to the underside of the beam supported on shock absorbing members, vibrating the beam and the hook by at least one rotary vibrator whose rotating shaft is placed on and parallel to the beam and whose direction of vibration varies continually and cyclically in the plane perpendicular to the beam, and transmitting the vibration of the rotary vibrator to the coiled wires through the hook so that the coiled wires suspended from the hook are rotated along the circumferential direction in the solution bath.Type: GrantFiled: November 10, 1981Date of Patent: September 6, 1983Assignee: Kobe Steel, LimitedInventors: Heijiro Kawakami, Katsumasa Tanaka, Seiichi Kamamoto, Kazuo Sato
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Patent number: 4366305Abstract: In a process for producing a stabilized oxymethylene copolymer by heat-melting, at a temperature ranging between the melting point of the copolymer and a temperature 100.degree. C.Type: GrantFiled: November 17, 1981Date of Patent: December 28, 1982Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akira Amemiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura, Yoshihiro Ono, Isamu Masumoto, Noriyasu Nakao, Masanori Furukawa
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Patent number: 4343929Abstract: A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a continuously stirring-type mixer having two stirring shafts having a plurality of plate-like paddles fixed thereto the cross-section of each of said paddles taken perpendicularly of the axial direction of the stirring shaft having a shape of a convex lens, an ellipse or a quasipolygon inscribing a phantom circle at each vertex, one of said paddles facing another paddle fixed to the other stirring shaft and said one paddle being positioned such that it rotates while the edges thereof keep a slight clearance from the inner surface of the barrel and the other paddle; polymerizing the starting mixture while moving it toward the discharge opening by the rotation of the paddles, the improvement wherein the profiles of the paddles are changed, or the arrangement of theType: GrantFiled: October 23, 1980Date of Patent: August 10, 1982Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Akitoshi Sugio, Kazuyoshi Taka, Akira Amemiya, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura, Yoshihiro Ono
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Patent number: 4339569Abstract: In a process for producing an oxymethylene homopolymer or copolymer having improved stability which comprises polymerizing trioxane or a mixture of trioxane and a cyclic ether and/or a cyclic acetal in bulk in the presence of a catalyst which is at least one compound selected from the group consisting of boron trifluoride, boron trifluoride hydrate and coordination compounds of boron trifluoride with organic compounds containing an oxygen or sulfur atom, the improvement which comprises performing the bulk polymerization without destroying the bulk polymerization system, or which comprises adding a tertiary phosphine compound to the polymerization system to deactivate the catalyst, before the polymerization system formed by the bulk polymerization is destroyed.Type: GrantFiled: May 19, 1980Date of Patent: July 13, 1982Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Akitoshi Sugio, Akira Amemiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura
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Patent number: 4301273Abstract: In a process for producing a stabilized oxymethylene copolymer which comprises heat-melting an oxymethylene copolymer having unstable, unblocked terminals obtained by the copolymerization of trioxane with a cyclic acetal and/or a cyclic ether to heat decompose it in the presence of available heat stabilizers; the improvement which comprises heating said oxymethylene copolymer having unblocked terminals in a mixer at a temperature between the melting point of said oxymethylene copolymer and a point 100.degree. C. higher than said melting point under a pressure of 0.Type: GrantFiled: May 27, 1980Date of Patent: November 17, 1981Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Akira Amemiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura
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Patent number: 4224435Abstract: In a method for mixing a trioxane, a polymerization catalyst and a comonomer for producing of oxymethylene copolymers by continuously copolymerizing trioxane with a cyclic ether or a cyclic acetal as a comonomer, the improved method comprises following steps:spouting a comonomer and a polymerization catalyst from nozzle openings which are set adjacent to each other,while washing both openings at the tip end of the nozzles with a flow of trioxane,whereby mixing said comonomer, said polymerization catalyst and said trioxane,and then feeding the mixture to a polymerization reactor to effect copolymerization.The raw materials are mixed together before they are fed to the polymerization reactor, and no clogging trouble at the tip end of the nozzle for feeding a polymerization catalyst occurs. Further the resulting copolymer has a much superior heat stability.Type: GrantFiled: June 13, 1979Date of Patent: September 23, 1980Assignee: Mitsubishi Gas chemical Company, Inc.Inventors: Akitoshi Sugio, Akira Amamiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umenura, Kiyokazu Kawaguchi
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Patent number: 4189565Abstract: A process for polymerizing trioxane made from an aqueous solution of methanol-containing formaldehyde by a conventional method or copolymerizing the trioxane with another monomer, characterized bycooling the trioxane to crystallize it,allowing the trioxane in a crystalline state to stand in an open system in an atmosphere of air or an inert gas to remove polyoxymethylene dimethoxide from the trioxane,melting the trioxane, andpolymerizing the trioxane or copolymerizing the trioxane and the another monomer.Type: GrantFiled: December 20, 1978Date of Patent: February 19, 1980Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Akira Amemiya, Tetsuya Abe, Tomotaka Furusawa, Takeo Suzumori, Mutsuhiko Takeda, Masaharu Kimura, Yoshiharu Ohtsuki, Katsumasa Tanaka, Toshikazu Umemura, Kiyokazu Kawaguchi, Michio Ohba
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Patent number: 4115369Abstract: A process for continuously producing an oxymethylene polymer by continuously polymerizing a starting monomer containing at least 50 mole% of trioxane in bulk in the presence of a catalyst, which comprises feeding the starting monomer into a first-stage polymerization reactor having a self-cleaning action to perform a first-stage polymerization reaction until the conversion reaches 40 to 70%, withdrawing the reaction mixture as a powder from the outlet of the first-stage polymerization reactor, feeding the reaction mixture into a second-stage polymerization reactor having a stirring action to perform a second-stage polymerization reaction until the conversion reaches 95 to 100%, and then withdrawing the polymerization product as a powder from the outlet of the second-stage polymerization reactor.Type: GrantFiled: November 29, 1977Date of Patent: September 19, 1978Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Tomotaka Furusawa, Katsumasa Tanaka, Toshikazu Umemura, Hiroyuki Urabe
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Patent number: 4078202Abstract: Apparatus in a continuous processing line or wire wherein a welded joint, a disconnected part or an entangled part of a metallic wire, traveling continuously, is detected by sensing a variation in the electrostatic capacity between a detecting element and the wire member. The detecting element is so supported as to be displaceable when pressed by the metallic wire, which passes over an auxiliary roller which is disposed at a position opposite to the detecting element, with the wire moving therebetween. A pair of guide rollers disposed forwardly and rearwardly of the detecting element, in the traveling direction of the wire, and a pair of press rollers are disposed on the same side as that of the detecting element and between the detecting element and the guide rollers in order to normally hold the wire member to be detected in contact with the auxiliary roller.Type: GrantFiled: June 21, 1976Date of Patent: March 7, 1978Assignee: Kobe Steel, Ltd.Inventors: Satoru Nishi, Katsumasa Tanaka