Patents by Inventor Wataru Ohashi
Wataru Ohashi 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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Publication number: 20090288799Abstract: A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass % or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous casting while maintaining a flow rate of Ar gas blown from any location in a range from a tundish upper nozzle to discharge ports of said immersion nozzle at 3 Nl (normal liter)/min or less.Type: ApplicationFiled: October 27, 2006Publication date: November 26, 2009Inventors: Masafumi Miyazaki, Akihiro Matsuzawa, Katsuhiro Sasai, Wataru Ohashi, Yasuhiko Ohtani, Katsunori Yamada, Masahiro Doki, Go Hirata, Yoshiaki Kimura, Hajime Hasegawa
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Patent number: 7602263Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: GrantFiled: October 30, 2007Date of Patent: October 13, 2009Assignee: Oki Semiconductor Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Patent number: 7479845Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: GrantFiled: January 11, 2005Date of Patent: January 20, 2009Assignee: Oki Electric Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Patent number: 7470333Abstract: A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×1010 [/mm3] or less, and that the steel sheet contains, by mass %, C: up to 0.01%, Si: 0.1% to 7.0%. Al: 0.1% to 3.0%. Mn: 0.1% to 2.0%, REM: 0.0003% to 0.05%. Ti: up to 0.02%. S: up to 0.005%. and N: up to 0.005%. the balance Fe and inevitable impurities and the mass % of Al represented by [Al] and the mass % of Ti represented by [Ti] satisfy the equation log([Ti]×[N])?1.19×log([Al]×[N])+1.84>0 . . . (1).Type: GrantFiled: April 28, 2004Date of Patent: December 30, 2008Assignee: Nippon Steel Corp.Inventors: Wataru Ohashi, Akihito Kiyose, Masafumi Miyazaki, Takeshi Kubota, Yousuke Kurosaki, Yoshihiro Arita, Ken-ichiro Miyamoto, Takashi Sawai
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Publication number: 20080290964Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: ApplicationFiled: October 30, 2007Publication date: November 27, 2008Applicant: Oki Electronic Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Publication number: 20080149298Abstract: The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.Type: ApplicationFiled: February 15, 2008Publication date: June 26, 2008Applicant: Nippon Steel CorporationInventors: Katsuhiro Sasai, Wataru Ohashi, Tooru Matsumiya, Yoshiaki Kimura, Junji Nakashima
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Publication number: 20080136556Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: ApplicationFiled: October 30, 2007Publication date: June 12, 2008Applicant: Oki Electronic Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Publication number: 20080129413Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: ApplicationFiled: October 30, 2007Publication date: June 5, 2008Applicant: Oki Electronic Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Publication number: 20080112838Abstract: Non-oriented electrical steel sheet superior in core loss characterized by containing, by mass %, C: 0.01% or less, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, N: 0.005% or less, Ti: 0.02% or less, REM: 0.05% or less, S: 0.005% or less, O: 0.Type: ApplicationFiled: September 28, 2005Publication date: May 15, 2008Inventors: Masafumi Miyazaki, Wataru Ohashi, Yousuke Kurosaki, Takeshi Kubota, Hiroshi Harada, Tomohiro Konno, Yutaka Matsumoto, Koichi Kirishiki
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Patent number: 7347904Abstract: The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.Type: GrantFiled: June 28, 2002Date of Patent: March 25, 2008Assignee: Nippon Steel CorporationInventors: Katsuhiro Sasai, Wataru Ohashi, Tooru Matsumiya, Yoshiaki Kimura, Junji Nakashima
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Publication number: 20070079910Abstract: The present invention provides ultralow carbon thin gauge steel sheet and a method for producing the same where coalescence and growth of inclusions in the molten steel are prevented and the inclusions are finely dispersed in the steel sheet, whereby surface defects and cracks at the time of press forming are prevented, growth of recrystallized grains at the time of continuous annealing is promoted, and a high r value (r value?2.0) and elongation (total elongation?50%) are exhibited, that is, ultralow carbon thin gauge steel sheet excellent in surface conditions, formability, and workability comprised of, by mass %, 0.0003%?C?0.003%, Si <0.01%, Mn ?0.1%, P?0.02%, S?0.01%, 0.0005%?N?0.0025%, 0.01%?acid soluble Ti?0.07%, acid soluble Al ?0.003%, and 0.002%?La+Ce+Nd?0.02% and a balance of iron and unavoidable impurities, said steel sheet characterized by containing at least cerium oxysulfite, lanthanum oxysulfite, and neodymium oxysulfite.Type: ApplicationFiled: November 4, 2004Publication date: April 12, 2007Applicant: NIPPON STEEL CORPORATIONInventors: Katsuhiro Sasai, Wataru Ohashi
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Publication number: 20060243351Abstract: A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×1010 [/mm3] or less, and that the steel sheet contains, by mass%, C: up to 0.01%, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, REM: 0.0003% to 0.05%, Ti: up to 0.02%, S: up to 0.005%, and N: up to 0.005%, the balance Fe and inevitable impurities and the mass % of Al represented by [All and the mass % of Ti represented by [Ti] satisfy the equation loq([Ti]×[N])?1.19×loq([Al]×[N])+1.84>0 . . . (1).Type: ApplicationFiled: April 28, 2004Publication date: November 2, 2006Applicant: NIPPON STEEL CORPORATIONInventors: Wataru Ohashi, Akihito Kiyose, Masafumi Miyazaki, Takeshi Kubota, Yousuke Kurosaki, Yoshihiro Arita, Ken-ichiro Miyamoto, Takashi Sawai
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Patent number: 6960966Abstract: A high-performance SAW filter is to be provided which has lower insertion loss in a pass band and high attenuation in an attenuation band on the low frequency side of the pass band. In a SAW filter with attenuation poles configured of a two-port circuit for filtering for forming a ladder type SAW filter using a SAW resonator and a two-port circuit for impedance formed of an impedance serially connected, the impedance of the two-port circuit for impedance is configured so as to form an attenuation band of a predetermined width having a sufficient attenuation characteristic on the low frequency side of a pass band.Type: GrantFiled: September 24, 2003Date of Patent: November 1, 2005Assignee: Oki Electric Industry Co., Ltd.Inventors: Kazushige Noguchi, Satoshi Terada, Wataru Ohashi, Tomokazu Komazaki
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Patent number: 6937113Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: GrantFiled: April 3, 2002Date of Patent: August 30, 2005Assignee: Oki Electric Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Publication number: 20050122187Abstract: A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.Type: ApplicationFiled: January 11, 2005Publication date: June 9, 2005Applicant: Oki Electric Industry Co., Ltd.Inventors: Wataru Ohashi, Hajime Shimamura, Tomokazu Komazaki, Yoshiaki Fujita
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Patent number: 6899759Abstract: A single crystal production method based on the Czochralski method comprises controlling a number of crucible rotations and crystal rotations so that a number of vibrations for driving a melt, determined on the basis of the number of crucible and crystal rotations during a single crystal growing procedure, is outside a range from 95% to 105% of a number of sloshing resonance vibrations of the melt. In another embodiment, the method comprises controlling a number of rotations of a crystal and crucible, so that when a number of vibrations for driving a melt, determined by the number of crucible and crystal rotations during a single crystal growing procedure, is within a range from 95% to 105% of a number of sloshing resonance vibrations of the melt, the number of vibrations of the melt due to sloshing does not exceed 2000 times during a period when the number of vibrations is within that range.Type: GrantFiled: October 30, 2002Date of Patent: May 31, 2005Assignee: Siltronic AGInventors: Yutaka Kishida, Teruyuki Tamaki, Seiki Takebayashi, Wataru Ohashi
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Patent number: 6861925Abstract: A surface acoustic wave filter includes an antenna terminal, an antenna, a transmitting filter, a branching line and a receiving filter. The antenna is coupled to the antenna terminal. The transmitting filter is coupled to the antenna terminal. The transmitting filter receives an electrical power. The branching line is coupled to the antenna terminal. The branching line has a first length that is longer than ?/4 length so that the electrical power received by the transmitting filter when the antenna terminal is opened is smaller than when the antenna terminal is terminated, wherein ? is a wave length of a center frequency of transmitted and received bands of the surface acoustic wave filter. The receiving filter is coupled to the branching line.Type: GrantFiled: October 21, 2002Date of Patent: March 1, 2005Assignee: Oki Electric Industry Co., Ltd.Inventors: Wataru Ohashi, Hisanori Ehara, Tomokazu Komazaki
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Publication number: 20040201434Abstract: A high-performance SAW filter is to be provided which has lower insertion loss in a pass band and high attenuation in an attenuation band on the low frequency side of the pass band. In a SAW filter with attenuation poles configured of a two-port circuit for filtering for forming a ladder type SAW filter using a SAW resonator and a two-port circuit for impedance formed of an impedance serially connected, the impedance of the two-port circuit for impedance is configured so as to form an attenuation band of a predetermined width having a sufficient attenuation characteristic on the low frequency side of a pass band.Type: ApplicationFiled: September 24, 2003Publication date: October 14, 2004Inventors: Kazushige Noguchi, Satoshi Terada, Wataru Ohashi, Tomokazu Komazaki
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Publication number: 20040168749Abstract: The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.Type: ApplicationFiled: December 22, 2003Publication date: September 2, 2004Inventors: Katsuhiro Sasai, Wataru Ohashi, Tooru Matsumiya, Yoshiaki Kimura, Junji Nakashima
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Publication number: 20030098756Abstract: A surface acoustic wave filter includes an antenna terminal, an antenna, a transmitting filter, a variable branching line and a receiving filter. The antenna is coupled to the antenna terminal. The transmitting filter is coupled to the antenna terminal for receiving an electrical power. The variable branching line is coupled to the antenna terminal. The variable branching line has a first length when the antenna terminal is opened and has a second length that is longer than the first length when the antenna terminal is terminated so that the electrical power received by the transmitting filter when the antenna terminal is opened is smaller than it when the antenna terminal is terminated. The receiving filter is coupled to the variable branching line.Type: ApplicationFiled: October 21, 2002Publication date: May 29, 2003Inventors: Wataru Ohashi, Hisanori Ehara, Tomokazu Komazaki