Patents by Inventor Yanqing Zhao
Yanqing Zhao 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: 12044531Abstract: A level instrument for surveying a mining subsidence zone in a coal mining area includes a bottom plate, a leveling mechanism, a lifting mechanism, and a level instrument body, where the leveling mechanism is provided on the bottom plate, the lifting mechanism is provided on the leveling mechanism, and the level instrument body is provided on the lifting mechanism. A surveying method using the level instrument is further provided. The level instrument is placed at a surveying location through the bottom plate, a levelness of the level instrument body is directly adjusted through the leveling mechanism below the level instrument body, and a height of the level instrument body is directly adjusted through the lifting mechanism. In this way, the operation process of the level instrument is simplified, and the overall surveying efficiency is improved.Type: GrantFiled: April 12, 2024Date of Patent: July 23, 2024Assignee: PING AN COAL MINING ENGINEERING TECInventors: Bo Xue, Shikai An, Yanfei Xu, Haiyan Cheng, Yanqing Li, Wei Miao, Derong Zhao, Hao Li, Hongxing Guo, Qingfa Liao
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Patent number: 10560132Abstract: The present application discloses a reconfigurable transmitter and receiver, and methods for reconfiguring the same. A system adaptive control circuit generates a control signal according to frequency band information of an input signal; a system clock circuit generates a system clock; a preprocessing circuit preprocesses a received baseband signal according to the system clock and the control signal, to generate a frequency band signal; a digital intermediate frequency processing circuit processes the frequency band signal according to the system clock and the control signal, to generate a digital intermediate frequency signal; a digital-to-analog conversion circuit processes the digital intermediate frequency signal according to the system clock and the control signal, to generate an analog signal; and an analog transmitting circuit transmits the analog signal.Type: GrantFiled: December 5, 2016Date of Patent: February 11, 2020Assignee: Huawei Technologies Co., Ltd.Inventors: Yunfu Dou, Tingjian Tian, Yanqing Zhao
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Patent number: 10075324Abstract: A predistortion processing apparatus: an auxiliary feedback module, configured to: extract a nonlinear distortion signal from an analog signal, and input an obtained feedback signal corresponding to the nonlinear distortion signal into an auxiliary model coefficient training module; the auxiliary model coefficient training module, configured to: train an auxiliary coefficient according to the feedback signal and a predistortion signal, and transmit a first auxiliary coefficient obtained through training to a predistortion processing module; a radio frequency signal feedback module, configured to extract a fundamental wave feedback signal; a predistortion model coefficient training module, configured to: train a predistortion coefficient according to the predistortion signal and the fundamental wave feedback signal, and transmit an obtained predistortion coefficient to the predistortion processing module; the predistortion processing module, configured to: perform predistortion processing on an input intermediType: GrantFiled: May 19, 2017Date of Patent: September 11, 2018Assignee: Huawei Technologies Co., Ltd.Inventors: Yanqing Zhao, Chunlei Yu, Tingjian Tian
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Patent number: 9938240Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.Type: GrantFiled: December 8, 2016Date of Patent: April 10, 2018Assignee: Apotex Inc.Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah
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Patent number: 9768811Abstract: Embodiments of the present invention disclose a pre-distortion system, including a pre-distortion circuit, a transmission circuit, a power amplifier, a feedback circuit, and a learning circuit. The pre-distortion circuit acquires an in-band intermodulation distortion model coefficient vector, a cross-band modulation distortion model coefficient vector, and an out-of-band intermodulation distortion model coefficient vector that are learned by the learning circuit according to an output signal of the power amplifier, and performs pre-distortion processing on an input digital intermediate frequency signal. Correspondingly, the embodiments of the present invention further disclose a pre-distortion method, which can eliminate impact caused by out-of-band intermodulation distortion on the power amplifier.Type: GrantFiled: October 28, 2016Date of Patent: September 19, 2017Assignee: Huawei Technologies Co., Ltd.Inventors: Tingjian Tian, Yanqing Zhao, Yunfu Dou
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Publication number: 20170257251Abstract: A predistortion processing apparatus: an auxiliary feedback module, configured to: extract a nonlinear distortion signal from an analog signal, and input an obtained feedback signal corresponding to the nonlinear distortion signal into an auxiliary model coefficient training module; the auxiliary model coefficient training module, configured to: train an auxiliary coefficient according to the feedback signal and a predistortion signal, and transmit a first auxiliary coefficient obtained through training to a predistortion processing module; a radio frequency signal feedback module, configured to extract a fundamental wave feedback signal; a predistortion model coefficient training module, configured to: train a predistortion coefficient according to the predistortion signal and the fundamental wave feedback signal, and transmit an obtained predistortion coefficient to the predistortion processing module; the predistortion processing module, configured to: perform predistortion processing on an input intermediType: ApplicationFiled: May 19, 2017Publication date: September 7, 2017Inventors: Yanqing Zhao, Chunlei Yu, Tingjian TIAN
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Publication number: 20170247329Abstract: Compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.Type: ApplicationFiled: May 12, 2017Publication date: August 31, 2017Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise Maria N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
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Publication number: 20170088518Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.Type: ApplicationFiled: December 8, 2016Publication date: March 30, 2017Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah
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Publication number: 20170085281Abstract: The present application discloses a reconfigurable transmitter and receiver, and methods for reconfiguring the same. A system adaptive control circuit generates a control signal according to frequency band information of an input signal; a system clock circuit generates a system clock; a preprocessing circuit preprocesses a received baseband signal according to the system clock and the control signal, to generate a frequency band signal; a digital intermediate frequency processing circuit processes the frequency band signal according to the system clock and the control signal, to generate a digital intermediate frequency signal; a digital-to-analog conversion circuit processes the digital intermediate frequency signal according to the system clock and the control signal, to generate an analog signal; and an analog transmitting circuit transmits the analog signal.Type: ApplicationFiled: December 5, 2016Publication date: March 23, 2017Inventors: Yunfu DOU, Tingjian TIAN, Yanqing ZHAO
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Publication number: 20170047954Abstract: Embodiments of the present invention disclose a pre-distortion system, including a pre-distortion circuit, a transmission circuit, a power amplifier, a feedback circuit, and a learning circuit. The pre-distortion circuit acquires an in-band intermodulation distortion model coefficient vector, a cross-band modulation distortion model coefficient vector, and an out-of-band intermodulation distortion model coefficient vector that are learned by the learning circuit according to an output signal of the power amplifier, and performs pre-distortion processing on an input digital intermediate frequency signal. Correspondingly, the embodiments of the present invention further disclose a pre-distortion method, which can eliminate impact caused by out-of-band intermodulation distortion on the power amplifier.Type: ApplicationFiled: October 28, 2016Publication date: February 16, 2017Inventors: Tingjian TIAN, Yanqing ZHAO, Yunfu DOU
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Patent number: 9550733Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.Type: GrantFiled: June 10, 2015Date of Patent: January 24, 2017Assignee: Apotex Technologies Inc.Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
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Publication number: 20160083346Abstract: Compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.Type: ApplicationFiled: December 1, 2015Publication date: March 24, 2016Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
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Publication number: 20150335626Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.Type: ApplicationFiled: June 10, 2015Publication date: November 26, 2015Inventors: Tim Fat TAM, Regis LEUNG-TOUNG, Yingsheng WANG, Yanqing ZHAO, Tao XIN, Birenkumar SHAH, Blaise N'ZEMBA, Jolanta Maria WODZINSKA, Maryna PREMYSLOVA
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Publication number: 20150274665Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.Type: ApplicationFiled: June 11, 2015Publication date: October 1, 2015Inventors: Tim Fat TAM, Regis LEUNG-TOUNG, Yingsheng WANG, Yanqing ZHAO, Tao XIN, Birenkumar SHAH, Blaise N'ZEMBA, Jolanta Maria WODZINSKA, Maryna PREMYSLOVA, Jianmin Zhang
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Publication number: 20150225341Abstract: The present invention relates to pharmaceutically acceptable crystalline and amorphous salts of D-isoglutamyl-D-tryptophan as well as processes for their manufacture, pharmaceutical compositions comprising them, and their uses in the preparation of pharmaceutical compositions for the treatment of various conditions and/or diseases. In particular, the present invention relates to D-isoglutamyl-D-tryptophan amorphous potassium salt.Type: ApplicationFiled: February 10, 2014Publication date: August 13, 2015Inventors: Tim Fat Tam, Blaise N'Zemba, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Lily YU
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Patent number: 9073865Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.Type: GrantFiled: July 5, 2010Date of Patent: July 7, 2015Assignee: Apotex Technologies Inc.Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
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Publication number: 20150011484Abstract: The present invention provides pro-drugs of D-gamma-glutamyl-[D/L]-tryptophan, said pro-drugs are compounds of Formula I or pharmaceutically acceptable salts thereof, wherein G is C1-C8 alkyl or benzyl, T is C1-C8 alkyl or benzyl, and * is a chiral carbon in a (R) or (S) configuration, provided that when * is in the (R) configuration, at least one of G and T is C5-C8 alkyl; and use of compounds of Formula I in a pharmaceutical composition.Type: ApplicationFiled: March 30, 2012Publication date: January 8, 2015Applicant: APTOEX TECHNOLOGIES, INC.Inventors: Tim Fat Tam, Regis Leung-Toung, Yinsheng Wang, Yanqing Zhao, Tao Xin, Wanren Li, Jolanta Maria Wodzinska, Vrajlal S. Rabadia, Birenkumar Shah, Christopher John Feeney
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Publication number: 20140343050Abstract: Provided are carboxylic ester derivatives of formula (I), methods of preparing them, and methods for using them. These compounds are prodrugs of D-isoglutamyl-[D/L]-tryptophan. The in vitro bioconversion of some of the prodrugs to the parent drug D-isoglutamyl-D-tryptophan (or thymodepressin) was tested in human hepatocytes and in human blood. In vivo pharmacokinetic studies following oral administration of some of the prodrugs to rats are also reported.Type: ApplicationFiled: March 30, 2012Publication date: November 20, 2014Applicant: APTOEX TECHNOLOGIES, INC.Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Wanren Li, Jolanta Maria Wodzinska, Vrajlal S. Rabadia, Christopher John Feeney
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Patent number: 8735602Abstract: The present invention relates to pharmaceutically acceptable crystalline and amorphous salts of D-isoglutamyl-D-tryptophan as well as processes for their manufacture, pharmaceutical compositions comprising them, and their uses in the preparation of pharmaceutical compositions for the treatment of various conditions and/or diseases. In particular, the present invention relates to D-isoglutamyl-D-tryptophan potassium salt (1:1), D-isoglutamyl-D-tryptophan lithium salt (1:1), D-isoglutamyl-D-tryptophan calcium salt (2:1), D-isoglutamyl-D-tryptophan magnesium salt (2:1), and D-isoglutamyl-D-tryptophan organic ammonium salts (1:1).Type: GrantFiled: March 19, 2012Date of Patent: May 27, 2014Assignee: Apotex Technologies inc.Inventors: Tim Fat Tam, Blaise N'Zemba, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Lily Yu
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Patent number: 8673943Abstract: The present invention relates to novel derivatives of deferiprone. In particular, the present invention relates to fluorinated derivatives of deferiprone or pharmaceutically acceptable salts thereof, pharmaceutical compositions comprising same, processes for the manufacture thereof and their use in the treatment of neurodegenerative diseases caused by the presence of free iron or iron accumulation in neural tissues and in diseases wherein excess iron must be removed or redistributed.Type: GrantFiled: September 26, 2011Date of Patent: March 18, 2014Assignee: Apotex Technologies Inc.Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao