Patents by Inventor Toshiyuki Saito
Toshiyuki Saito 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: 20140079348Abstract: A rolling bearing includes an inner ring, an outer ring, and a plurality of rolling elements. A large number of inside dimples in which a liquid lubricant is retained and a large number of outside dimples in which a solid lubricant is retained are formed in at least one of an inner ring raceway surface and an outer ring raceway surface. The inside dimples are formed in a contact region at which the raceway surface contact the rolling elements or in a section of each non-contact region, the section being close to the contact region. The outside dimples are formed outside a portion in which the inside dimples are formed.Type: ApplicationFiled: September 13, 2013Publication date: March 20, 2014Applicant: JTEKT CORPORATIONInventors: Masahiro SUZUKI, Junji MURATA, Kazuyoshi YAMAKAWA, Toshiyuki SAITO
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Patent number: 8675588Abstract: In a wireless communication system, when data communication is performed between a relay device and a terminal (in a second path), the same amount of data is required to be transferred between a base station and the relay device (in a third path). An amount of wireless communication resources required is obtained by adding an amount inversely proportional to a capacity of each of the second and third wireless transmission-paths. Therefore, the amount inversely proportional to the capacity of the third path is consumed in excess. Based on a channel quality of a first wireless channel between the base station and the terminal, a channel quality of a second wireless channel between the terminal and the relay station, and a channel quality of a third wireless channel between the base station and the relay station, it is determined whether data communication between the base station and the terminal is relayed.Type: GrantFiled: August 14, 2009Date of Patent: March 18, 2014Assignee: Hitachi, Ltd.Inventors: Kenzaburo Fujishima, Toshiyuki Saito, Yuta Muto, Kouki Uwano
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Patent number: 8635568Abstract: A semiconductor device includes a control target circuit section and a voltage control section configured to dynamically control a supply voltage to the control target circuit section. The control target circuit section includes a delay monitor circuit configured to measure a delay in the control target circuit section as a monitor delay and a target delay register configured to store target delay data for a target value of the monitor delay and which is set before the measuring of the delay, based on an external signal. The delay monitor circuit compares the monitor delay and the target delay and sends a comparison resultant signal to the voltage control section to show a result of the comparison. The voltage control section controls the supply voltage based on the comparison resultant signal such that the monitor delay approaches to the target delay.Type: GrantFiled: September 10, 2012Date of Patent: January 21, 2014Assignee: Renesas Electronics CorporationInventors: Yoshitaka Horikoshi, Toshiyuki Saito
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Patent number: 8556668Abstract: In a hybrid type marine propulsion device including a main engine and a motor, low fuel consumption is realized by a compact configuration and highly efficient drive control. A marine propulsion device includes a clutch 7 provided on an input shaft 6 of a main engine, a horizontal input/output shaft 8 connected to the clutch, a vertical shaft 11 connected to the input/output shaft through an upper bevel gear 9, a horizontal propeller shaft 13 connected to a lower end of the vertical shaft through a lower bevel gear 12, and a propeller 14 at the other end side of the propeller shaft, in which the propeller is revolved around the vertical shaft to set a propulsion direction, wherein a motor generator 20 is mounted on a floor 3, and connected directly to the other end side of the input/output shaft. In a low rotation region, motor propulsion is performed, and in a high rotation region, hybrid propulsion in which the main engine is assisted by the motor is performed.Type: GrantFiled: August 20, 2010Date of Patent: October 15, 2013Assignee: Niigata Power Systems Co., Ltd.Inventors: Masanori Kodera, Yoshiki Nanke, Koichi Shiraishi, Yasuo Aizawa, Toshiyuki Saito
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Patent number: 8518863Abstract: A sliding member has a base material whose surface is at least partially covered with a DLC film, wherein an intermediate layer is interposed between the base material and the DLC film, and the intermediate layer has a multilayer structure obtained by stacking a first Cr layer, a CrN layer and a second Cr layer successively from the side closer to the base material.Type: GrantFiled: February 17, 2010Date of Patent: August 27, 2013Assignees: JTEKT Corporation, CNK Co., Ltd.Inventors: Masahiro Suzuki, Kazuyoshi Yamakawa, Toshiyuki Saito, Junji Ando, Tomoo Suzuki, Hiroyuki Hashitomi, Daigo Yamamoto
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Patent number: 8501673Abstract: A DLC-coated member (100) has a base (200), an intermediate layer (300) that covers the surface of the base (200), and a DLC film (400) that covers the surface of the intermediate layer (300). The intermediate layer (300) has a five-layer structure, constituted of a first intermediate layer (301), a second intermediate layer (302), a third intermediate layer (303), a fourth intermediate layer (304), and a fifth intermediate layer (305). The five layers (301 to 305) are made of DLC to which Si has been added. Among the layers (301 to 305), the Si concentration in the first intermediate layer (301) is the highest, and that in the fifth intermediate layer (305) is the second highest. The Si concentrations in the second intermediate layer (302), third intermediate layer (303), and fourth intermediate layer (304) are lower than those in the first intermediate layer (301) and fifth intermediate layer (305).Type: GrantFiled: October 6, 2011Date of Patent: August 6, 2013Assignee: JTEKT CorporationInventors: Masahiro Suzuki, Toshiyuki Saito, Kazuyoshi Yamakawa
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Patent number: 8491695Abstract: An iron-base sintered part having high density and totally enhanced strength, toughness and abrasion resistance, a manufacturing method of the iron-base sintered part, and an actuator are disclosed. The iron-base sintered part is formed by an iron-nickel-molybdenum-carbon-based sintered alloy, has density of 7.25 g/cm3 or more, and has a carburization quenched structure. A method for manufacturing the iron-base sintered part includes a molding process of charging a raw mixture powder of an iron-nickel-molybdenum-based metal powder and a carbon-based powder into a cavity of a molding die and compressing the raw powder in the cavity to form a consolidation body, a sintering process of sintering the consolidation body at a sintering temperature to form a sintered alloy, and a carburization quenching process of heating the sintered alloy in a carburization atmosphere and quenching the heated alloy.Type: GrantFiled: November 15, 2006Date of Patent: July 23, 2013Assignee: JTEKT CorporationInventors: Toshiyuki Saito, Takumi Mio, Koji Nishi, Hajime Fukami, Kentaro Yamauchi, Hiroyuki Yao, Masayuki Yamamoto, Hideki Yamazaki
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Patent number: 8445077Abstract: A method of producing a coated member in which a base material surface is at least partially coated with a diamond-like carbon film, the method includes: a diamond-like carbon film deposition process in which a diamond-like carbon film is formed on a surface of the base material by generating plasma by applying voltage to the base material in a processing chamber that stores the base material, while evacuating the processing chamber and introducing feedstock gas that contains at least a carbon compound into the processing chamber; and a hydrogenation process in which the deposited diamond-like carbon film is hydrogenated using hydrogen gas by stopping the voltage application and introducing hydrogen gas inducted instead of the feedstock gas, while the evacuation is being continued.Type: GrantFiled: May 27, 2011Date of Patent: May 21, 2013Assignee: JTEKT CorporationInventors: Masahiro Suzuki, Toshiyuki Saito, Kazuyoshi Yamakawa
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Publication number: 20130059093Abstract: The coated member production method includes a DLC film forming step of introducing a feedstock gas containing a carbon compound and an oxygen-containing organic silicon compound into a treatment chamber in which a base is accommodated, and applying a voltage to the base at a treatment pressure of not lower than 100 Pa and not higher than 400 Pa to generate plasma to form a DLC film on a surface of the base. Hexamethyldisiloxane, for example, is used as the oxygen-containing organic silicon compound. A DC pulse voltage, for example, is applied to the base in the DLC film forming step.Type: ApplicationFiled: May 12, 2011Publication date: March 7, 2013Applicant: JTEKT CORPORATIONInventors: Masahiro Suzuki, Kazuyoshi Yamakawa, Toshiyuki Saito
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Patent number: 8358637Abstract: A method for preventing or correcting the imbalance in load among interlaces in communications based on CDMA whereby communication resources are allocated to the respective interlaces through an interlacing scheme. A base station measures load information on an interlace-by-interlace basis, and notifies the same to a terminal while the terminal filters the load information to utilize the same for making a decision on transmission timing. Or the base station notifies the terminal of load information on plural transmission timings, and the terminal selects an adequate transmission timing to be then utilized. Otherwise, the base station presents at least two probabilities of transition between interlaces, urging the terminal to update an interlace (transmission timing) on a probabilistic basis.Type: GrantFiled: June 8, 2007Date of Patent: January 22, 2013Assignee: Hitachi, Ltd.Inventors: Toshiyuki Saito, Kiyoshi Kawamoto, Mikio Kuwahara
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Publication number: 20130017412Abstract: Disclosed is a covered member including a base material, a first intermediate layer that has a roughened surface and covers the base material, and a DLC film that covers the surface of the first intermediate layer. The first intermediate layer and the DLC film are formed in a state where the temperature of the base material is kept at 300° C. or lower. The surface of the first intermediate layer is roughened by collision of ions.Type: ApplicationFiled: April 8, 2011Publication date: January 17, 2013Applicant: JTEKT CORPORATIONInventors: Masahiro Suzuki, Toshiyuki Saito, Kazuyoshi Yamakawa
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Publication number: 20130002331Abstract: A semiconductor device includes a control target circuit section and a voltage control section configured to dynamically control a supply voltage to the control target circuit section. The control target circuit section includes a delay monitor circuit configured to measure a delay in the control target circuit section as a monitor delay and a target delay register configured to store target delay data for a target value of the monitor delay and which is set before the measuring of the delay, based on an external signal. The delay monitor circuit compares the monitor delay and the target delay and sends a comparison resultant signal to the voltage control section to show a result of the comparison. The voltage control section controls the supply voltage based on the comparison resultant signal such that the monitor delay approaches to the target delay.Type: ApplicationFiled: September 10, 2012Publication date: January 3, 2013Applicant: Renesas Electronics CorporationInventors: Yoshitaka Horikoshi, Toshiyuki Saito
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Patent number: 8341576Abstract: A semiconductor device includes: a control target circuit section; and a voltage control section configured to dynamically control a supply voltage to the control target circuit section. The control target circuit section includes: a delay monitor circuit configured to measure a delay in the control target circuit section as a monitor delay; and a target delay register configured to store a target delay data which shows a target delay as a target value of the monitor delay. The delay monitor circuit compares the monitor delay and the target delay shown by the target delay data and sends a comparison resultant signal to the voltage control section to show a result of the comparison. The voltage control section controls the supply voltage based on the comparison resultant signal such that the monitor delay approaches to the target delay.Type: GrantFiled: October 20, 2010Date of Patent: December 25, 2012Assignee: Renesas Electronics CorporationInventors: Yoshitaka Horikoshi, Toshiyuki Saito
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Publication number: 20120276531Abstract: To provide a novel method for determining the risk of lymph node metastasis of breast cancer uses as an index the difference in the expression levels of marker genes in at least one material selected from the group consisting of a breast tissue and a breast cell of a patient. The method includes measuring an expression level of a marker gene in at least one material selected from the group consisting of a breast tissue and a breast cell of a patient with breast cancer, and determining the risk of lymph node metastasis of breast cancer in the patient using the expression level of the marker gene as an index.Type: ApplicationFiled: March 8, 2012Publication date: November 1, 2012Applicants: MESSENGERSCAPE CO., LTD., NATIONAL INSTITUTE OF RADIOLOGICAL SCIENCES, ORIENTAL YEAST CO., LTD.Inventors: Toshiyuki Saito, Yoji Mikami, Masahiro Kinugasa, Kazuya Mori, Michiyo Sugimoto, Koji Uchida
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Patent number: 8295227Abstract: A radio communication system of an HARQ method that makes an HARQ transmission interval of subpackets appropriate and reduces data transmission delay resulting from subpacket retransmission. In the radio communication system in which a packet is transmitted and receives with the HARQ method between a base station and multiple radio mobile stations, each of the base station and the multiple radio mobile stations has: a packet transmission circuit for transmitting subpackets in predetermined intervals; a packet reception circuit for repeating decoding processing by combining a newly received subpacket and a previously received former subpacket until an original packet is successfully decoded; and a HARQ control equipped with a function of, for packet communication whose data length is short, transmitting a subpacket or response from the packet transmission circuit in an HARQ transmission interval that is shortened from the HARQ transmission interval of the normal mode.Type: GrantFiled: March 19, 2008Date of Patent: October 23, 2012Assignee: Hitachi, Ltd.Inventors: Rintaro Katayama, Toshiyuki Saito, Shiro Mazawa, Daigo Takayanagi
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Publication number: 20120213148Abstract: In wireless communication systems into which a relay device has been introduced, although terminal reception quality increases, data transmission by relay devices with low contribution causes interference in other data transmission, which invites a decrease in reception quality of electromagnetic waves received by terminals. As a way to resolve the abovementioned issue, as one embodiment of the present disclosures, a wireless relay station is configured so as to receive a plurality of data addressed for wireless terminals from a wireless base station, and to transmit data that are selected from the aforementioned received plurality of data and that are addressed to the aforementioned wireless terminals which are the destinations of transmission. As a result, interference towards other data transmission and reception caused by data transmission of a relay device can be suppressed, and the reception quality of electromagnetic waves received by the terminal can be increased.Type: ApplicationFiled: November 2, 2009Publication date: August 23, 2012Applicant: HITACHI, LTD.Inventors: Toshiyuki Saito, Kenzaburo Fujishima, Rintaro Katayama, Koki Uwano
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Patent number: 8238927Abstract: Since the OFDM communication method does not select whether plural sectors use a same terminal as a transmission destination, or always use it as a transmission destination, giving a preference to system throughput deteriorates channel quality of a terminal in a sector boundary, while increasing channel quality in sector boundaries greatly deteriorates system throughput. In a base station, when a sector transmits to a terminal in the front of a beam, only the sector performs the transmission, and when transmission is made to a terminal in a sector boundary off the direction of the beam, a different sector transmits to the same terminal using a same hopping pattern. Thereby, tradeoff between the channel quality of the terminal in a sector boundary and deterioration in system throughput can be minimized.Type: GrantFiled: August 23, 2007Date of Patent: August 7, 2012Assignee: Hitachi, Ltd.Inventors: Toshiyuki Saito, Rintaro Katayama, Akihiko Yoshida, Shiro Mazawa
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Patent number: 8229490Abstract: A hand-off control method (FIG. 4) for suppressing reverse radio wave interference between radio access terminals and for accelerating hand-off, in which when a base station of greatest forward reception power has changed from a BTS1 to a BTS2 in a forward link, the radio access terminal (AT) alters the ID of a designated communication-destination base station to the BTS2 in an R-CQICH transmitted cyclically, and it makes a hand-off request after having increased transmission power of the R-CQICH a fixed quantity (403-406). The BTS1 does not transmit an FLAB and data. The BTS2 receives the R-CQICH (406) and succeeds in demodulation, thereby to recognize that the BTS2 has been designated as the communication-destination base station, and it transmits (407) an FLAB after execution and completion of a hand-off process.Type: GrantFiled: July 18, 2008Date of Patent: July 24, 2012Assignee: Hitachi, Ltd.Inventors: Rumiko Hayashi, Shiro Mazawa, Toshiyuki Saito
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Patent number: 8197142Abstract: A bearing apparatus includes: two split outer ring halves which includes outer ring raceway surfaces and are disposed within a supporting hole of the housing, respectively; and a plurality of rollers which are disposed on respective inner surfaces of the both split outer ring halves and supports a shaft. Each of the two split outer ring halves includes an oil hole penetrating the split outer ring half in a radial direction thereof and an oil groove formed on an outer diameter surface of the split outer ring half along a circumferential direction thereof to allow the oiling passage and the oil holes to communicate with each other. Each of the oil holes is disposed at a position located at an angle of within 45° from the joint surface of the split outer ring halves in an opposite direction to a rotating direction of the shaft.Type: GrantFiled: January 8, 2009Date of Patent: June 12, 2012Assignee: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa, Toshiyuki Saito
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Patent number: 8189701Abstract: A radio communication system includes a first radio station for dividing codewords into communication units and transmitting the divided codewords by modulating them in every communication unit, and a second radio station for coupling and decoding signals obtained by demodulating the communication units. The radio stations have common information of first bits, equal to maximum bits per symbol of the communication units, and an encoding type list. The first station modulates and transmits the communication units with a modulation type with second bits. The second radio station receives the communication units modulated by the first radio station, demodulates the communication units with a modulation type with third bits, combines and decodes the demodulated signals with encoding types in the encoding type list, and obtains a result of the decoding, as reception information, by an encoding type in which no error is detected in the result of decoding.Type: GrantFiled: August 23, 2010Date of Patent: May 29, 2012Assignee: Hitachi, Ltd.Inventors: Satoshi Tamaki, Takashi Yano, Toshiyuki Saito, Seishi Hanaoka