Patents by Inventor Toshiyuki Ohta
Toshiyuki Ohta 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: 9856625Abstract: A working vehicle includes: a vehicle body; and a boom; a bucket; a boom driving unit including a boom cylinder; a bucket driving unit configured to swing the bucket; a boom-bottom pressure sensor configured to detect a boom-bottom pressure of the boom cylinder; and a working equipment controller configured to control at least one of a lift motion of the boom and a tilt motion of the bucket. The bucket includes an inclined portion. The working equipment controller controls the lift motion or the tilt motion by comparing a threshold set in accordance with an inclination angle of the inclined portion with the boom-bottom pressure.Type: GrantFiled: August 7, 2015Date of Patent: January 2, 2018Assignee: Komatsu Ltd.Inventors: Minoru Wada, Toshiyuki Ohta, Toshimitsu Honda, Katsuhiro Tsutsumi, Takaya Kobayashi, Yosuke Yamagoe
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Patent number: 9732494Abstract: A bucket with a linear lower front edge includes: a first straight portion horizontally extending from the lower front edge toward an innermost of the bucket; an inclined portion continuous with a rear edge of the first straight portion, the inclined portion further extending toward the innermost of the bucket while being inclined upward; a curve continuous with a rear edge of the inclined portion at a lower edge of the curve, the curve having a predetermined bucket radius; a second straight portion continuous with an upper edge of the curve, the second straight portion being inclined upward toward a bucket opening; and a third straight portion bent at a bent portion toward the bucket opening relative to a front edge of the second straight portion, the third straight portion further extending toward the bucket opening.Type: GrantFiled: July 15, 2015Date of Patent: August 15, 2017Assignee: Komatsu Ltd.Inventors: Toshimitsu Honda, Toshiyuki Ohta, Minoru Wada, Katsuhiro Tsutsumi, Takaya Kobayashi
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Patent number: 9719229Abstract: A bucket with a blade-shaped lower front edge includes: a first straight portion horizontally extending from the lower front edge toward an innermost of the bucket; a curve continuous with a rear edge of the first straight portion at a lower edge of the curve, the curve having a predetermined bucket radius; a second straight portion continuous with an upper edge of the curve, the second straight portion being inclined upward toward a bucket opening; a third straight portion bent at a bent portion toward the bucket opening relative to a front edge of the second straight portion, the third straight portion further extending toward the bucket opening; a reinforcing member provided on an exterior surface of the third straight portion to reinforce of the exterior surface; and a connecting portion provided behind the curve.Type: GrantFiled: July 15, 2015Date of Patent: August 1, 2017Assignee: Komatsu Ltd.Inventors: Norihito Bandou, Takeshi Saoyama, Minoru Wada, Toshiyuki Ohta, Toshimitsu Honda, Katsuhiro Tsutsumi, Takaya Kobayashi, Takayasu Wakamoto
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Publication number: 20170037594Abstract: A working vehicle (1) includes: a vehicle body (2); and a boom (31); a bucket (32); a boom driving unit including a boom cylinder (36); a bucket driving unit configured to swing the bucket (32); a boom-bottom pressure sensor (460) configured to detect a boom-bottom pressure of the boom cylinder (36); and a working equipment controller (10) configured to control at least one of a lift motion of the boom (31) and a tilt motion of the bucket (32). The bucket (32) includes an inclined portion (44). The working equipment controller (10) controls the lift motion or the tilt motion by comparing a threshold set in accordance with an inclination angle of the inclined portion (44) with the boom-bottom pressure.Type: ApplicationFiled: August 7, 2015Publication date: February 9, 2017Inventors: Minoru Wada, Toshiyuki Ohta, Toshimitsu Honda, Katsuhiro Tsutsumi, Takaya Kobayashi, Yosuke Yamagoe
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Publication number: 20170016204Abstract: A bucket with a blade-shaped lower front edge includes: a first straight portion horizontally extending from the lower front edge toward an innermost of the bucket; a curve continuous with a rear edge of the first straight portion at a lower edge of the curve, the curve having a predetermined bucket radius; a second straight portion continuous with an upper edge of the curve, the second straight portion being inclined upward toward a bucket opening; a third straight portion bent at a bent portion toward the bucket opening relative to a front edge of the second straight portion, the third straight portion further extending toward the bucket opening; a reinforcing member provided on an exterior surface of the third straight portion to reinforce of the exterior surface; and a connecting portion provided behind the curve.Type: ApplicationFiled: July 15, 2015Publication date: January 19, 2017Applicant: KOMATSU LTD.Inventors: Norihito Bandou, Takeshi Saoyama, Minoru Wada, Toshiyuki Ohta, Toshimitsu Honda, Katsuhiro Tsutsumi, Takaya Kobayashi, Takayasu Wakamoto
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Publication number: 20170016203Abstract: A bucket with a linear lower front edge includes: a first straight portion horizontally extending from the lower front edge toward an innermost of the bucket; an inclined portion continuous with a rear edge of the first straight portion, the inclined portion further extending toward the innermost of the bucket while being inclined upward; a curve continuous with a rear edge of the inclined portion at a lower edge of the curve, the curve having a predetermined bucket radius; a second straight portion continuous with an upper edge of the curve, the second straight portion being inclined upward toward a bucket opening; and a third straight portion bent at a bent portion toward the bucket opening relative to a front edge of the second straight portion, the third straight portion further extending toward the bucket opening.Type: ApplicationFiled: July 15, 2015Publication date: January 19, 2017Inventors: Toshimitsu Honda, Toshiyuki Ohta, Minoru Wada, Katsuhiro Tsutsumi, Takaya Kobayashi
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Patent number: 9534569Abstract: A working vehicle includes: an air cleaner provided with a vacuator; a planar portion located below the air cleaner; an emission receiver provided to the planar portion at a position right under the vacuator, the emission receiver being recessed downward while having an upper opening, the emission receiver including a bottom surface; and a discharge channel having a base end that is in communication with the emission receiver through a communication opening and a distal end that is opened to an outside of the working vehicle through a discharge port, the discharge channel having an inclined surface inclined downward from the communication opening toward discharge port.Type: GrantFiled: April 22, 2015Date of Patent: January 3, 2017Assignee: Komatsu Ltd.Inventors: Hisato Kitaoka, Toshimitsu Honda, Toshiyuki Ohta
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Publication number: 20160312747Abstract: A working vehicle includes: an air cleaner provided with a vacuator; a planar portion located below the air cleaner; an emission receiver provided to the planar portion at a position right under the vacuator, the emission receiver being recessed downward while having an upper opening, the emission receiver including a bottom surface; and a discharge channel having a base end that is in communication with the emission receiver through a communication opening and a distal end that is opened to an outside of the working vehicle through a discharge port, the discharge channel having an inclined surface inclined downward from the communication opening toward discharge port.Type: ApplicationFiled: April 22, 2015Publication date: October 27, 2016Inventors: Hisato Kitaoka, Toshimitsu Honda, Toshiyuki Ohta
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Patent number: 7949535Abstract: A system and method is provided for easily detecting a fraudulent user who attempts to obtain authentication using voice reproduced by a reproducer. A personal computer is provided with an audio data obtaining portion for picking up ambient sound around a person as a target of user authentication using voice authentication technology during a period before the person utters, and a fraud determination portion for calculating an intensity level showing intensity of the picked-up ambient sound per predetermined time for each of sections into which the period is divided and for determining that the person is a fraudulent user who attempts to obtain authentication using reproduced voice, when, of two of the calculated intensity levels, the intensity level of the later section is larger than a sum of the intensity level of the earlier section and a predetermined value.Type: GrantFiled: July 26, 2006Date of Patent: May 24, 2011Assignee: Fujitsu LimitedInventors: Toshiyuki Ohta, Maiko Hirahara, Kazunari Hirakawa
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Publication number: 20070266154Abstract: A system and method is provided for easily detecting a fraudulent user who attempts to obtain authentication using voice reproduced by a reproducer. A personal computer is provided with an audio data obtaining portion for picking up ambient sound around a person as a target of user authentication using voice authentication technology during a period before the person utters, and a fraud determination portion for calculating an intensity level showing intensity of the picked-up ambient sound per predetermined time for each of sections into which the period is divided and for determining that the person is a fraudulent user who attempts to obtain authentication using reproduced voice, when, of two of the calculated intensity levels, the intensity level of the later section is larger than a sum of the intensity level of the earlier section and a predetermined value.Type: ApplicationFiled: July 26, 2006Publication date: November 15, 2007Inventors: Toshiyuki Ohta, Maiko Hirahara, Kazunari Hirakawa
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Publication number: 20070088540Abstract: In a voice data processing method and device detecting a pitch from history data during a packet loss and generating compensating data thereof, input signal data is decoded in a normal mode, a calculation of a normalized cross-correlation in coarse search used for a pitch detection is repeated by a predetermined frequency of loops within a required frequency of loops, based on history decode data, a peak value of a normalized cross-correlation obtained by the calculation and a delay data value corresponding thereto are held, and fine search is executed by repeating the calculation of the normalized cross-correlation in the coarse search by a remaining required frequency of loops, by using the peak value of the normalized cross-correlation and the delay data value in a packet loss mode, thereby generating compensating data.Type: ApplicationFiled: January 26, 2006Publication date: April 19, 2007Inventors: Toshiyuki Ohta, Kazuhiro Nomoto, Kano Asada, Kazunari Hirakawa
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Patent number: 6489389Abstract: Rubber compositions for tire treads containing a rubber component containing at least 70 parts by weight of a styrene-butadiene rubber whose styrene content is 20 to 60%; 5 to 150 parts by weight of a powdery inorganic compound represented by formula (I) and having a particle size from 0.01 to 10 &mgr;m: mM1•xSiOy•zH2O (I) in which M1 is at least one of Al, Mg, Ti, and Ca, or hydroxides or oxides thereof; and 5 to 170 parts by weight of carbon black having a nitrogen adsorption specific area of 80 to 280 m2/g and the total amount of the powdery inorganic compound and the carbon black is from 70 to 200 parts by weight. The amount of an extract obtained when extracting the rubber composition, after being vulcanized, with acetone and chloroform should be 30 to 270 parts by weight. Similar compositions containing silica are also disclosed.Type: GrantFiled: January 28, 1999Date of Patent: December 3, 2002Assignee: Bridgestone CorporationInventors: Toshiyuki Ohta, Kenji Matsuo, Jun Sakiyama, Seiichiro Iwafune
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Publication number: 20020169245Abstract: Rubber compositions for tire treads. Typically, they contain a rubber component containing at least 70 parts by weight of a styrene-butadiene rubber whose styrene content is 20 to 60%; and contain, based on 100 parts by weight of the rubber component, 5 to 150 parts by weight of a powdery inorganic compound represented by formula (I) and having a particle size from 0.Type: ApplicationFiled: January 28, 1999Publication date: November 14, 2002Inventors: TOSHIYUKI OHTA, KENJI MATSUO, JUN SAKIYAMA, SEIICHIRO IWAFUNE
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Patent number: 6361406Abstract: In an abrasion method of a semiconductor device, in which concavity and convexity of an oxidized film surface on a wafer 13 are abraded using an abrasive pad 11, a region to be simulated in a layout data of a wiring process of the semiconductor device is divided into a plurality of small regions (i,j), and approximate average height H(i,j) of the abrasive pad 11 from a concave pattern 14 in the small regions (i,j) is calculated based on a sum total B of areas of tip surfaces of convex patterns, average height h(i,j) of the convex patterns 12, and a sum total C of an area of a surrounding region P around each convex pattern 12.Type: GrantFiled: April 13, 2000Date of Patent: March 26, 2002Assignee: NEC CorporationInventor: Toshiyuki Ohta
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Patent number: 6226768Abstract: A coded frame synchronization method for decoding coded information sent every frame includes the steps of: (a) receiving a coded frame having error detection or correction codes, each of which is provided every predetermined number of bits, error detection or correction codes being added to the coded frame in accordance with a predetermined pattern; (b) pulling the coded frame in synchronization by performing an error detection process every predetermined number of bits to be compared with results of the error detection process and thus detecting a phase of the error detection or correction codes; and (c) recognizing a leading end of the coded frame on the basis of the phase of the error detection or correction codes.Type: GrantFiled: April 28, 1998Date of Patent: May 1, 2001Assignee: Fujitsu LimitedInventors: Kaoru Chujo, Naoji Fujino, Toshiaki Nobumoto, Tomonobu Takashima, Noboru Kobayashi, Miki Murakawa, Toshiyuki Ohta
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Patent number: 6199029Abstract: A topography simulation method using the Monte Carlo method is provided, which simulates the post-etching topography of a plasma-assisted etching process affected by different etching species such as the ion-assisted etching process. (a) A bulk- and/or sheath-plasma region is/are analyzed using a first random number, calculating a species energy of an incoming species. (b) A sort of the incoming species toward a minute surface region of a target material is selected using a second random number based on the species energy calculated in the step (a). (c) An absorption state of the incoming species with atoms of the target material on the minute surface region of the target material is selected using a third random number based on the species energy in the step (a) and the sort of the incoming species selected in the step (b).Type: GrantFiled: May 26, 1998Date of Patent: March 6, 2001Assignee: NEC CorporationInventor: Toshiyuki Ohta
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Patent number: 6113750Abstract: Formation of metal thin films by collimate sputtering with high productivity and high bottom coverages. The bottom coverages by collimate sputtering are increased by using a target having a high sputtered-particle emission probability in the range of angles at which the collimator passage rate is high, without increasing the aspect ratio of the collimator, that is, without lowering the productivity.Type: GrantFiled: November 20, 1996Date of Patent: September 5, 2000Assignee: NEC CorporationInventors: Toshiki Shinmura, Hiroaki Yamada, Toshiyuki Ohta
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Patent number: 6070735Abstract: Calculation is made of a collision point and a collision time of collision between a sputter particle and a surrounding gas particle (step 102). The collision time is compared with a unit time having a predetermined length (step 104). When the collision time is smaller than the unit time, calculation is made of the temperature distribution of a surrounding gas at the collision point with reference to a result of thermal analysis performed in a preceding unit time (step 105). Then, the energy variation of the surrounding gas particle is calculated by the use of the temperature distribution (steps 106-109). After the calculation is performed for all collision coordinates within the unit time, the temperature distribution of the surrounding gas at the collision point. is obtained by thermal analysis with reference to the result of calculation of the energy variation and the unit time is renewed (steps 111-113).Type: GrantFiled: November 30, 1998Date of Patent: June 6, 2000Assignee: NEC CorporationInventor: Toshiyuki Ohta
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Patent number: 5983011Abstract: In order to simulate, using a computer, a profile of sputter deposition on a contact hole formed on a semiconductor wafer, a plurality of trajectories of particles emitted from a sputter target are calculated. One of the trajectories is directed to a first coordinate point which is included in the profile of sputter deposition and with which an amount of sputter deposition is calculated. Thereafter, a plurality of shadow judgment planes are successively defined with respect to all coordinate points, after which a check is made to determine if the above mentioned one of the plurality of trajectories crosses each of said plurality of shadow judgment planes.Type: GrantFiled: September 2, 1997Date of Patent: November 9, 1999Assignee: NEC CorporationInventors: Hiroaki Yamada, Toshiyuki Ohta
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Patent number: 5850356Abstract: A simulation apparatus for simulating and optimizing a configuration of a sputtering apparatus including a target surface temperature calculating unit for calculating a temperature of a target surface in consideration of cooling of the target, an atom initial velocity calculating unit for calculating an initial velocity of atoms within the target based on the calculated target surface temperature, an ion incidence rate calculating unit for calculating an incidence rate of the incident ions into the target to determine a position at which the incident ions collide against the target, an atom trajectory calculating unit for obtaining trajectories of atoms within the target based on each of calculation results and a sputtered atom ejection angle distribution unit for extracting sputtered atoms based on the calculation results to obtain ejection angle distribution.Type: GrantFiled: September 13, 1996Date of Patent: December 15, 1998Assignee: NEC CorporationInventors: Hiroaki Yamada, Toshiyuki Ohta, Toshiki Shinmura