Patents by Inventor Masahiro Yokoyama
Masahiro Yokoyama 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: 20240102957Abstract: In an electrochemical gas sensor (10), a first sensing element (21) is stored in a first storage portion (31). A moisture permeable film (24) is disposed in a first introduction inlet (31A) of the first storage portion (31). The moisture permeable film (24) substantially prevents a to-be-detected gas from permeating therethrough. A second sensing element (22) is disposed in a space into which water vapor and the to-be-detected gas contained in a target gas flow. In such a configuration, the electrochemical gas sensor (10) is capable of detecting a to-be-detected gas having a concentration of 0 or more and 1 ppm or less.Type: ApplicationFiled: March 8, 2022Publication date: March 28, 2024Inventors: Shinichiro KITO, Masayuki SEGAWA, Takahiro YOKOYAMA, Junya IMAIZUMI, Yuki MIZUTANI, Masahiro TANAKA, Yoshiko KUMAGAI
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Patent number: 11665048Abstract: A communication system includes a first communication device and a second communication device. The first communication device includes a first processor that executes a first process including: performing a logging process for recording an operation of the first communication device; monitoring whether an abnormal occurrence is present and suspending the logging process when the abnormal occurrence is detected; and generating a trigger signal that instructs to suspend the logging process when the abnormal occurrence is detected, and a transmitter that transmits the trigger signal. The second communication device includes a receiver that receives the trigger signal transmitted from the first communication device, and a second processor that executes a second process including: performing a logging process for recording an operation of the second communication device; and suspending the logging process when the trigger signal is received by the receiver.Type: GrantFiled: January 4, 2022Date of Patent: May 30, 2023Assignee: FUJITSU LIMITEDInventors: Tomoshige Nakata, Noriaki Kono, Masahiro Yokoyama
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Publication number: 20220311654Abstract: A communication system includes a first communication device and a second communication device. The first communication device includes a first processor that executes a first process including: performing a logging process for recording an operation of the first communication device; monitoring whether an abnormal occurrence is present and suspending the logging process when the abnormal occurrence is detected; and generating a trigger signal that instructs to suspend the logging process when the abnormal occurrence is detected, and a transmitter that transmits the trigger signal. The second communication device includes a receiver that receives the trigger signal transmitted from the first communication device, and a second processor that executes a second process including: performing a logging process for recording an operation of the second communication device; and suspending the logging process when the trigger signal is received by the receiver.Type: ApplicationFiled: January 4, 2022Publication date: September 29, 2022Applicant: FUJITSU LIMITEDInventors: TOMOSHIGE NAKATA, Noriaki Kono, Masahiro Yokoyama
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Patent number: 9060517Abstract: An agricultural or horticultural fungicide contains as an active ingredient thereof at least one compound selected from the group consisting of nitrogenated heterocyclic compounds represented by formula (I) (wherein, R represents a group represented by CR1R2R3 or a cyano group, R1 to R3 represent hydrogen atoms, alkyl groups or hydroxyl groups, or the like, X1 represents a halogeno group or the like, m represents an integer of 0 to 5, X2 represents a halogeno group or the like, n represents an integer of 0 to 3, B represents a carbon atom or a nitrogen atom, D represents a 5- to 7-membered hydrocarbon ring, and A1 to A4 represent carbon atoms or nitrogen atoms, provided that A1 to A4 do not all represent carbon atoms when B represents a carbon atom) and salts thereof.Type: GrantFiled: May 17, 2012Date of Patent: June 23, 2015Assignee: Nippon Soda Co., Ltd.Inventors: Kotaro Shibayama, Raito Kuwahara, Motoaki Sato, Satoshi Nishimura, Yasuyuki Shiinoki, Masahiro Yokoyama, Juri Kitamura
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Patent number: 8737352Abstract: A communication system includes a first base station for communicating complying with a first communication protocol, a second base station for communicating by using radio frames complying with a second communication protocol and transmitting synchronization signals complying with the first communication protocol, the synchronization signals synchronizing the transmitted radio frames, and a mobile terminal for communicating according to the process includes: receiving the synchronization signals from the second base station while communicating with the first base station, estimating transmitting timing of the radio frames including symbols on the basis of the received synchronization signals, measuring a receiving signal strength of the symbol on the basis of the estimated timing, and controlling a handover from the first base station to the second base station on the basis of the measurement result by the measurement of the receiving signal strength of the symbol.Type: GrantFiled: May 31, 2010Date of Patent: May 27, 2014Assignee: Fujitsu LimitedInventors: Takeshi Kawagishi, Hiroshi Sasaki, Jun Sakurai, Tsutomu Itou, Kanji Hozumi, Tatsuya Urushiyama, Masahiro Yokoyama
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Publication number: 20140073792Abstract: An agricultural or horticultural fungicide contains as an active ingredient thereof at least one compound selected from the group consisting of nitrogenated heterocyclic compounds represented by formula (I) (wherein, R represents a group represented by CR1R2R3 or a cyano group, R1 to R3 represent hydrogen atoms, alkyl groups or hydroxyl groups, or the like, X1 represents a halogeno group or the like, m represents an integer of 0 to 5, X2 represents a halogeno group or the like, n represents an integer of 0 to 3, B represents a carbon atom or a nitrogen atom, D represents a 5- to 7-membered hydrocarbon ring, and A1 to A4 represent carbon atoms or nitrogen atoms, provided that A1 to A4 do not all represent carbon atoms when B represents a carbon atom) and salts thereof.Type: ApplicationFiled: May 17, 2012Publication date: March 13, 2014Applicant: Nippon Soda Co., Ltd.Inventors: Kotaro Shibayama, Raito Kuwahara, Motoaki Sato, Satoshi Nishimura, Yasuyuki Shiinoki, Masahiro Yokoyama, Juri Kitamura
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Patent number: 8557738Abstract: The present invention provides a nitrogen-containing heterocyclic compound represented by formula (I) and salt thereof (wherein, R1 to R6 each independently represents a hydrogen atom, unsubstituted or substituted C1-20 alkyl group and the like, R1 and R2, R3 and R4, or R5 and R6 may together form an unsubstituted or substituted 5- to 8-membered ring, A-B, in which A represents a carbon atom and B represents a nitrogen atom, represents the formula: C?N and the like, Y represents an oxygen atom and the like, X and X? each independently represent an unsubstituted or substituted C1-20 alkyl group and the like, m represents an integer of 0 to 2, and n represents an integer of 0 to 4), and a fungicide for agricultural and horticultural use that contains at least one of these compounds as an active ingredient thereof, demonstrates reliable effects and can be used safely.Type: GrantFiled: August 10, 2009Date of Patent: October 15, 2013Assignee: Nippon Soda Co., Ltd.Inventors: Akira Mitani, Jun Inagaki, Raito Kuwahara, Masahiro Yokoyama, Kotaro Shibayama, Motoaki Sato
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Patent number: 8179863Abstract: A wireless communication apparatus comprises a determination unit to determine whether to increase the number of reference signals to be included in a downlink signal based on an uplink signal. The wireless communication apparatus further comprises a mapping unit to map reference signals based on a determination made by the determination unit.Type: GrantFiled: March 24, 2009Date of Patent: May 15, 2012Assignee: Fujitsu LimitedInventors: Masahiro Yokoyama, Hitoshi Mizusawa, Yusuke Furuumi
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Publication number: 20110136782Abstract: The present invention provides a nitrogen-containing heterocyclic compound represented by formula (I) and salt thereof (wherein, R1 to R6 each independently represents a hydrogen atom, unsubstituted or substituted C1-20 alkyl group and the like, R1 and R2, R3 and R4, or R5 and R6 may together form an unsubstituted or substituted 5- to 8-membered ring, A-B, in which A represents a carbon atom and B represents a nitrogen atom, represents the formula: C?N and the like, Y represents an oxygen atom and the like, X and X? each independently represent an unsubstituted or substituted C1-20 alkyl group and the like, m represents an integer of 0 to 2, and n represents an integer of 0 to 4), and a fungicide for agricultural and horticultural use that contains at least one of these compounds as an active ingredient thereof, demonstrates reliable effects and can be used safely.Type: ApplicationFiled: August 10, 2009Publication date: June 9, 2011Applicant: Nippon Soda Co., LtdInventors: Akira Mitani, Jun Inagaki, Raito Kuwahara, Masahiro Yokoyama, Kotaro Shibayama, Motoaki Sato
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Publication number: 20100316020Abstract: A communication system includes a first base station for communicating complying with a first communication protocol, a second base station for communicating by using radio frames complying with a second communication protocol and transmitting synchronization signals complying with the first communication protocol, the synchronization signals synchronizing the transmitted radio frames, and a mobile terminal for communicating according to the process includes: receiving the synchronization signals from the second base station while communicating with the first base station, estimating transmitting timing of the radio frames including symbols on the basis of the received synchronization signals, measuring a receiving signal strength of the symbol on the basis of the estimated timing, and controlling a handover from the first base station to the second base station on the basis of the measurement result by the measurement of the receiving signal strength of the symbol.Type: ApplicationFiled: May 31, 2010Publication date: December 16, 2010Applicant: FUJITSU LIMITEDInventors: Takeshi KAWAGISHI, Hiroshi Sasaki, Jun Sakurai, Tsutomu Itou, Kanji Hozumi, Tatsuya Urushiyama, Masahiro Yokoyama
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Publication number: 20090303946Abstract: A wireless communication apparatus comprises a determination unit to determine whether to increase the number of reference signals to be included in a downlink signal based on an uplink signal. The wireless communication apparatus further comprises a mapping unit to map reference signals based on a determination made by the determination unit.Type: ApplicationFiled: March 24, 2009Publication date: December 10, 2009Applicant: FUJITSU LIMITEDInventors: Masahiro Yokoyama, Hitoshi Mizusawa, Yusuke Furuumi
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Publication number: 20060262475Abstract: First and second reactance parts are connected with the first and second output terminals of a hybrid coupler. The first and second reactance parts have a substantially identical reactance X.Type: ApplicationFiled: October 10, 2003Publication date: November 23, 2006Applicant: SOSHIN ELECTRIC CO., LTD.Inventors: Itsuaki Katsumata, Tokumi Kobayashi, Masahiro Yokoyama
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Patent number: 6791534Abstract: The invention provides a trackball unit featuring good water resistance and user maintenance capabilities. A case (3) of the trackball unit has a drain pipe (32) connecting a cavity (33) formed inside the case (3) for accommodating a ball (2) to the exterior of the case (3). A case cover (6) has a ring-shaped projecting part (62) while a ball cover (7) has a pair of locking tabs (72, 73) which engage with the projecting part (62) of the case cover (6), so that the ball cover (7) can be detachably fitted to the case cover (6).Type: GrantFiled: February 8, 2002Date of Patent: September 14, 2004Assignee: Furuno Electric Company, LimitedInventors: Yoshihiro Tada, Katsuhisa Yamamoto, Masahiro Yokoyama
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Publication number: 20040157576Abstract: A receiver of a communication device includes: a differential amplification circuit; two capacitors for applying only the amplitude components of two input clock signals complementary to each other to the gates of two N-channel MOS transistors of the differential amplification circuit; and an initialization circuit for applying a predetermined reference potential to the gates of the two N-channel MOS transistors in a non data communication state. Thus, it is possible to make a quick and stable transition from a non data communication state to a data communication state.Type: ApplicationFiled: November 19, 2003Publication date: August 12, 2004Applicant: RENESAS TECHNOLOGY CORP.Inventors: Kiyoshi Adachi, Danichi Komatsu, Takashi Utsumi, Yoshiyuki Haraguchi, Hiroyuki Kousaka, Masahiro Yokoyama
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Publication number: 20040019772Abstract: A microprocessor includes a register (5) rewritable with software outputs a signal A for determining which one of a successor instruction to be executed when a condition for a conditional branch is satisfied and another successor instruction to be executed when the condition is unsatisfied is to be introduced into a delay slot. When the microprocessor executes a conditional branch, a decode circuit (6) delivers a signal B indicating which one of the successor instruction and the other successor instruction is to be selected as the next instruction to be supplied next to a CPU (1) to a code interface circuit (2).Type: ApplicationFiled: January 22, 2003Publication date: January 29, 2004Inventors: Hiroshi Ueki, Masahiro Yokoyama
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Publication number: 20040014166Abstract: A process for producing a substance with a microbial catalyst in which a rise of the temperature of a reaction using a microbial catalyst is controlled to produce the substance at a fixed rate, or in which a substrate of the microbial catalyst is added at a fixed rate and a reaction temperature rise is controlled while a reaction using a microbial catalyst is carried out in order to produce the substance at a fixed rate.Type: ApplicationFiled: June 20, 2003Publication date: January 22, 2004Inventors: Koichi Hayakawa, Yoichi Kobayashi, Masahiro Yokoyama
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Patent number: 6586973Abstract: An output buffer circuit is provided for maintaining the slew rate of output waveforms of the output signal within a predetermined range regardless of changes of load on the output terminal. Series-connected feedback delay circuits (11-14) delay an input signal (IN) on the basis of the potential of an output signal (OUT) obtained through a feedback path (L1). Delay time of each feedback delay circuit varies according to load on an output terminal (2). Delay signals from the feedback delay circuits (11-14) are applied to one inputs of high-output selecting NAND gates (G11-G14), respectively. The NAND gates (G11-G14) also receive the input signal (IN) at their other inputs and output signals to gates of high output transistors (QP1-QP4), respectively. At the rise of the input signal (IN), the high output transistors (QP1-QP4) output the output signal (OUT) in response to the delay signals from the feedback delay circuits (11-14).Type: GrantFiled: October 21, 1999Date of Patent: July 1, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Yokoyama, Kouji Nasu, Syuichi Shirata, Satie Kuroda, Teruaki Kanzaki, Akihito Uehara
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Publication number: 20020109674Abstract: The invention provides a trackball unit featuring good water resistance and user maintenance capabilities. A case (3) of the trackball unit has a drain pipe (32) connecting a cavity (33) formed inside the case (3) for accommodating a ball (2) to the exterior of the case (3). A case cover (6) has a ring-shaped projecting part (62) while a ball cover (7) has a pair of locking tabs (72, 73) which engage with the projecting part (62) of the case cover (6), so that the ball cover (7) can be detachably fitted to the case cover (6).Type: ApplicationFiled: February 8, 2002Publication date: August 15, 2002Inventors: Yoshihiro Tada, Katsuhisa Yamamoto, Masahiro Yokoyama
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Publication number: 20020075049Abstract: An output buffer circuit is provided for maintaining the slew rate of output waveforms of the output signal within a predetermined range regardless of changes of load on the output terminal. Series-connected feedback delay circuits (11-14) delay an input signal (IN) on the basis of the potential of an output signal (OUT) obtained through a feedback path (L1). Delay time of each feedback delay circuit varies according to load on an output terminal (2). Delay signals from the feedback delay circuits (11-14) are applied to one inputs of high-output selecting NAND gates (G11-G14), respectively. The NAND gates (G11-G14) also receive the input signal (IN) at their other inputs and output signals to gates of high output transistors (QP1-QP4), respectively. At the rise of the input signal (IN), the high output transistors (QP1-QP4) output the output signal (OUT) in response to the delay signals from the feedback delay circuits (11-14).Type: ApplicationFiled: October 21, 1999Publication date: June 20, 2002Inventors: MASAHIRO YOKOYAMA, KOUJI NASU, SYUICHI SHIRATA, SATIE KURODA, TERUAKI KANZAKI, AKIHITO UEHARA
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Patent number: 5459734Abstract: A test circuit for testing a signal input circuit having a threshold, an operational amplifier 3, for example, which converts voltages of input signal into a binary signal and supplies it to a logic circuit, a register 8, for example, is provided with signal lines 91, 92 connecting an input end and an output end of the register 8 through a switch 9. The test circuit judges a threshold of the operational amplifier 3 on the basis of voltage of a signal inputted to the operational amplifier 3 and a value of an output signal outputted from the operational amplifier 3 through the signal line 91, the switch 9, and the signal line 92 by turning switch 9 on. It is possible to perform testing at high speed without software processing. It is also possible to make the occupied area on one chip small when a plurality of signal input circuits are provided on the chip.Type: GrantFiled: September 10, 1993Date of Patent: October 17, 1995Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masahiro Yokoyama