Patents by Inventor Hirokazu Tanaka
Hirokazu 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: 9405167Abstract: An object of the present invention is to provide a liquid-crystal lens having excellent imaging performance. A liquid-crystal lens (1) according to the present invention includes a first liquid-crystal layer (11), a second liquid-crystal layer (12), a third liquid-crystal layer (13), and a fourth liquid-crystal layer (14) which are arranged in this order along an optical axis (C). The first liquid-crystal layer (11) and the second liquid-crystal layer (12) are 90° different in alignment direction from each other in a plane perpendicular to the optical axis (C). The first liquid-crystal layer (11) and the fourth liquid-crystal layer (14) are 180° different in alignment direction from each other in the plane perpendicular to the optical axis (C). The second liquid-crystal layer (12) and the third liquid-crystal layer (13) are 180° different in alignment direction from each other in the plane perpendicular to the optical axis (C).Type: GrantFiled: January 11, 2013Date of Patent: August 2, 2016Assignee: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Masaaki Kadomi, Hirokazu Tanaka, Masanori Wada, Takasi Akimoto
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Patent number: 9387973Abstract: An oxygen absorbing agent has excellent oxygen absorbing properties and can absorb oxygen in an atmosphere, even under a moisture-free or substantially moisture-free atmosphere. The oxygen absorbing agent includes an alloy obtained by subjecting an alloy (X) including (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon, to treatment with an alkali aqueous solution to elute and remove at least a part of the component (B) in the alloy (X), wherein the alloy (Y) has an X-ray diffraction profile satisfying a diffraction peak relationship.Type: GrantFiled: August 7, 2013Date of Patent: July 12, 2016Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Emi Ishihara, Hirokazu Tanaka, Tatsuo Iwai
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Publication number: 20160185004Abstract: A sheet cutter is operable by one hand for maintaining a sheet on a placing table and by other hand for cutting the sheet to ensure safety of finger of the one hand. The sheet cutter includes a pressing operating member adapted to be depressed from a non-pressing position to a pressing position for maintaining the sheet on the placing table against a biasing force of a spring, and a cutting operating member for travelling a cutter unit between one end and another end of the placing table, wherein the pressing operating member and the cutting operating member are arranged at different positions with a certain interval to set their operating directions orthogonal to each other. Accordingly, a sheet on the placing table can be cut by operating the cutting operating member horizontally with the other hand while operating the pressing operating member vertically with the one hand.Type: ApplicationFiled: December 10, 2015Publication date: June 30, 2016Inventors: Kenji BABA, Chiaki OSADA, Hirokazu TANAKA
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Publication number: 20160183285Abstract: According to one embodiment, a communication processing device is provided which is mounted on a wireless communication device that performs communication using a first channel and performs communication by a communication scheme different from that of the first channel using a second channel. The communication processing device includes a control circuitry to determine whether or not transmission data is data that needs to be preferentially transmitted, specify at least one channel from the first channel and the second channel according to a determination result, and perform control so as to transmit the transmission data using the specified channel.Type: ApplicationFiled: March 1, 2016Publication date: June 23, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160183258Abstract: According to one embodiment, a communication processing device mounted in a wireless communication device which uses a first channel and a second channel, includes controlling circuitry. The circuitry is configured to control to transmit, through the first channel, a first announcement signal including channel information of the second channel and control to transmit, through the second channel, a second announcement signal when slot allocation of a target communication device in the second channel is determined to be changed, the second announcement signal including a notification of the change in the slot allocation of the target communication device.Type: ApplicationFiled: March 1, 2016Publication date: June 23, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Patent number: 9358695Abstract: A trimming apparatus trims by cutter blades running from one end of a sheet bundle to the other end thereof, includes a bed surface for the sheet bundle, cutter blades for cutting the sheet bundle supported on the bed surface, a drive device for running the cutting blades from one end of the sheet bundle to the other end thereof, a support member having a support face, and a shift device for moving the support member between a working position for the support member supporting cut sheet dust pieces and a retreating position not to hinder the cut sheet dust pieces from dropping. The shift device displaces the support face from the working position to a retreating position after the cutter blades move at a predetermined distance toward the other end of the sheet bundle from one end thereof.Type: GrantFiled: December 18, 2014Date of Patent: June 7, 2016Assignee: SEIKO LTD.Inventors: Kenji Baba, Chiaki Osada, Hirokazu Tanaka
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Patent number: 9315372Abstract: A grease pump unit has a metering valve 37 and a grease supplying device 50 in which a suction tube 16 on a pump device 11 extends through a follower plate 19 in a grease can 100, grease in the grease can 100 being sucked through the suction tube 16 and discharged through a discharge port 17 by activation of the pump device 11. Provided are a bubble dividing device 32 which supplies the grease discharged through the discharge port 17 through an supply pipe 24 to micronize bubbles in the grease and which supplies the grease through a supply pipe 36 to the metering valve 37, and a return pipe 47 which returns a portion of the grease not discharged through the metering valve 37 into the grease can 100 via the follower plate 19.Type: GrantFiled: January 17, 2012Date of Patent: April 19, 2016Assignees: IHI COMPRESSOR AND MACHINERY CO., LTD., KOGANEI CORPORATIONInventors: Hiroyuki Doi, Hirokazu Tanaka
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Publication number: 20160079732Abstract: The method for controlling a wavelength-tunable laser comprises a first step of acquiring a driving condition of the wavelength-tunable laser for laser oscillation at a first wavelength, and a second step of calculating according to the driving condition of the first wavelength and a wavelength difference between the first wavelength and a second wavelength different from the first wavelength a control value or target value of a wavelength characteristic of the second wavelength in the wavelength detection unit, so as to calculate a driving condition for driving the wavelength-tunable laser, the second step including a step of selecting according to the wavelength difference one of etalon slopes having respective gradients identical and opposite to a gradient of an etalon slope used for controlling the first wavelength.Type: ApplicationFiled: September 8, 2015Publication date: March 17, 2016Inventors: Hirokazu Tanaka, Masao Shibata, Mitsuyoshi Miyata
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Patent number: 9281657Abstract: An apparatus for output light with a wavelength tunable function, includes: a semiconductor laser diode (LD) including regions to determine an oscillation wavelength, the regions providing respective diffraction gratings and electrodes to control refractive index of the regions; a temperature controller for mounting the LD thereon to control a temperature of the LD; and a controller configured to vary the refractive index of the regions by providing control signals to the electrodes and another control signal to the temperature controller for varying the temperature of the LD to coincide the oscillation wavelength with a target wavelength.Type: GrantFiled: June 12, 2014Date of Patent: March 8, 2016Assignee: Sumitomo Electric Device Innovations, Inc.Inventor: Hirokazu Tanaka
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Publication number: 20160056604Abstract: A method to tune an emission wavelength of a wavelength tunable laser apparatus is disclosed. The laser apparatus implements, in addition to a wavelength tunable laser diode (t-LD) integrating with a semiconductor optical amplifier (SOA), a wavelength monitor including an etalon filter. The current emission wavelength is determined by a ratio of the magnitude of a filtered beam passing the etalon filter to a raw beam not passing the etalon fitter. The method first sets the SOA in an absorbing mode to sense stray component disturbing the wavelength monitor, then correct the ratio of the beams by subtracting the contribution from the stray component.Type: ApplicationFiled: August 19, 2015Publication date: February 25, 2016Inventors: Hirokazu TANAKA, Tetsufumi ODAGAWA, Hiromitsu KAWAMURA, Masao SHIBATA
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Patent number: 9227398Abstract: This invention relates to suppression of density unevenness caused by occurrence of ink-landing position shifts between print scans. In an embodiment, upon printing by scanning an inkjet printhead including printing elements, the following control is executed. That is, in order to form an image by print scans of the printhead on a single print area on a print medium, image data are acquired in correspondence with the respective scans. Also, the printing elements are partitioned into plural groups each including continuously arrayed printing elements, and the printing elements in each of the plural groups are time-divisionally driven based on drive sequences. Then, the drive sequences upon time-divisional driving in respective scans are set to include elements having the same drive timings and those having different drive timings.Type: GrantFiled: January 15, 2013Date of Patent: January 5, 2016Assignee: Canon Kabushiki KaishaInventors: Hirokazu Tanaka, Tetsuya Edamura, Wakako Tanaka, Kiichiro Takahashi
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Publication number: 20150361529Abstract: An aluminum alloy clad material can produce a heat exchanger tube that exhibits excellent outer-side corrosion resistance when formed into a tube. The aluminum alloy clad material has a three-layer structure in which one side of a core material is clad with an inner cladding material, and the other side of the core material is clad with a sacrificial anode material, the core material being formed of an Al—Mn—Cu alloy that includes 0.6 to 2.0% of Mn and 0.03 to 1.0% of Cu, with the balance being aluminum and unavoidable impurities, the inner cladding material being formed of an Al—Mn—Cu alloy that includes 0.6 to 2.0% of Mn and 0.2 to 1.5% of Cu, with the balance being aluminum and unavoidable impurities, the sacrificial anode material being formed of an Al—Zn—Cu alloy that includes 0.5 to 6.0% of Zn and 0.03 to 0.Type: ApplicationFiled: January 17, 2014Publication date: December 17, 2015Inventors: Toshikazu TANAKA, Tomohiro SHOJI, Ryoko FUJIMURA, Naoki YAMASHITA, Hirokazu TANAKA
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Patent number: 9186050Abstract: A medical treatment endoscope includes: an insertion portion which has a lumen formed along a longitudinal axis of the insertion portion and is configured to be inserted into a body cavity, a lateral opening portion which extends in a lateral surface of the insertion portion, from a distal end surface of the insertion portion to a proximal end side of the insertion portion, an elastic member which is provided in an inner wall of the lumen at a position separated from an edge of a proximal end of the insertion portion in a direction toward a distal end side of the insertion portion, and a tubular arm which includes a bendable bending part provided at a distal end side of the tubular arm.Type: GrantFiled: April 4, 2014Date of Patent: November 17, 2015Assignee: OLYMPUS CORPORATIONInventors: Manabu Miyamoto, Yoshiaki Ito, Hirokazu Tanaka, Hideya Kitagawa, Taro Iede
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Patent number: 9160141Abstract: The method for controlling a wavelength-tunable laser comprises a first step of acquiring a driving condition of the wavelength-tunable laser for laser oscillation at a first wavelength, and a second step of calculating according to the driving condition of the first wavelength and a wavelength difference between the first wavelength and a second wavelength different from the first wavelength a control value or target value of a wavelength characteristic of the second wavelength in the wavelength detection unit, so as to calculate a driving condition for driving the wavelength-tunable laser, the second step including a step of selecting according to the wavelength difference one of etalon slopes having respective gradients identical and opposite to a gradient of an etalon slope used for controlling the first wavelength.Type: GrantFiled: July 30, 2014Date of Patent: October 13, 2015Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Hirokazu Tanaka, Masao Shibata, Mitsuyoshi Miyata
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Publication number: 20150268387Abstract: Provided is a liquid crystal lens having low wavefront aberration. A liquid crystal lens (1) includes a liquid crystal layer (11), a first electrode (21), a second electrode (22), and a third electrode (23). The first electrode (21) is provided with an opening (21a) and a communicating cutout (21b) formed therein, the communicating cutout (21b) allowing the opening (21a) to communicate with the outside. The second electrode (22) includes a main electrode portion (22a) and a linear leading electrode portion (22b). The main electrode portion (22a) is disposed within the opening (21a). The main electrode portion (22a) is electrically insulated from the first electrode (21). The leading electrode portion (22b) is electrically connected to the main electrode portion (22a). The leading electrode portion (22b) is disposed within the communicating cutout (21b). The third electrode (23) faces at least part of the first and second electrodes (21, 22).Type: ApplicationFiled: January 9, 2013Publication date: September 24, 2015Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Masaaki Kadomi, Masanori Wada, Hirokazu Tanaka, Takasi Akimoto
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Publication number: 20150239996Abstract: [Problem to be solved] There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity. [Solution to problem] The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and ?-olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and ?-olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %, [in the formula [I], R1, R3 and R5 to R16 are each independently a hydrogen atom, a hydrocarbon group or the like; R2 is a hydrocarbon group or the like; R4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].Type: ApplicationFiled: September 24, 2013Publication date: August 27, 2015Inventors: Munehito Funaya, Atsushi Sakuma, Ikuko Ebisawa, Shinsuke Kinoshita, Akiko Matsumoto, Hirokazu Tanaka, Shinya Tanaka
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Publication number: 20150191292Abstract: A process for producing an oxygen absorbing agent includes treating an alloy with an aqueous solution of an acid or an alkali, the alloy including at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to elute and remove at least a part of the component; and subjecting the alloy obtained by removing at least a part of the component in the alloy to treatment with an aqueous solution of a salt of an inorganic acid or a salt of an organic acid that can form a salt with the transition metal as the component, to form a metal salt in at least a part of the surface of the alloy.Type: ApplicationFiled: August 1, 2013Publication date: July 9, 2015Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Natsuko Matsushita, Emi Ishihara, Hirokazu Tanaka, Tatsuo Iwai
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Publication number: 20150174781Abstract: A trimming apparatus trims by cutter blades running from one end of a sheet bundle to the other end thereof, includes a bed surface for the sheet bundle, cutter blades for cutting the sheet bundle supported on the bed surface, a drive device for running the cutting blades from one end of the sheet bundle to the other end thereof, a support member having a support face, and a shift device for moving the support member between a working position for the support member supporting cut sheet dust pieces and a retreating position not to hinder the cut sheet dust pieces from dropping. The shift device displaces the support face from the working position to a retreating position after the cutter blades move at a predetermined distance toward the other end of the sheet bundle from one end thereof.Type: ApplicationFiled: December 18, 2014Publication date: June 25, 2015Applicant: SEIKO LTD.Inventors: Kenji BABA, Chiaki OSADA, Hirokazu TANAKA
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Publication number: 20150174778Abstract: A trimming apparatus, which carries out trimming with cutter blades running from one end of a material to be cut to the other end thereof, comprises an apparatus frame, a bed surface having a bed plate for the material to be cut, a first and a second guide plates disposed in parallel above and under holding the bed surface therebetween, a first holder member slidably supported by the first guide member, and holding the first cutter blade, a second holder member slidably supported by the second guide member, and holding the second cutter blade, a connector which connects one of the second cutter blade and the second holder member to the first cutter blade, and a drive means which makes at lease one of the first holder member and the second holder member run from one end of the material to be cut to the other end.Type: ApplicationFiled: December 18, 2014Publication date: June 25, 2015Applicant: SEIKO LTD.Inventors: Kenji BABA, Chiaki OSADA, Hirokazu TANAKA
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Patent number: 9064202Abstract: Textures in a printed image are reduced with a configuration that, provided that a matrix made up of a plurality of dot arrangement patterns is treated as a unit, binarizes image data is repeatedly applying such a matrix to the image data. Specifically, when a shift value K=k, a shift process calculates X+kY for the position (X, Y) of each cell in a 4×4 base matrix. The dot arrangement patterns are then shifted overall such that the cell where the value is k from among these values moves to the position (0, 0). The shift process is conducted while setting different shift values for every repeated use of the base matrix. As a result, regular textures are decreased in the case of using a base matrix made up of a gradation value Lv1 on a pixel area.Type: GrantFiled: May 30, 2013Date of Patent: June 23, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Wakako Tanaka, Hirokazu Tanaka, Tetsuya Edamura, Kiichiro Takahashi, Yusuke Komano