Patents by Inventor Zijun Chen
Zijun Chen 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: 20240083825Abstract: A controlled-release fertilizer including an inside core of water-soluble fertilizer particle and an outer layer coating material, wherein the coating material is a bentonite modified or sodium bentonite modified waterborne polymer; and a preparation method including: weighing the fertilizer core particle and the modified waterborne polymer emulsion according to the amount, preparing a semi-processed coating controlled-release fertilizer by using a coating machine, and placing the semi-processed coating controlled-release fertilizer in an oven for postprocessing to improve the compactness of the film material.Type: ApplicationFiled: March 3, 2023Publication date: March 14, 2024Inventors: Zijun Zhou, Yusheng Qin, Song Guo, Kun Chen, Xiangzhong Zeng, Hua Yu, Mingjiang He, Yuxian Shangguan, Yurou Dai, Wanzhen Yuan
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Patent number: 11556834Abstract: A device includes: a plurality of qubits arranged in a two-dimensional array and a plurality of readout resonators. Each readout resonator of a first readout resonator group is arranged to electromagnetically couple to a respective qubit of a first qubit group. Each readout resonator of a second readout resonator group is arranged to electromagnetically couple to a respective qubit of a second qubit group. A resonance frequency of each readout resonator of the first readout resonator group is within a first resonance frequency band, and a resonance frequency of each readout resonator of the second readout resonator group is within a second resonance frequency band that is different from the first resonance frequency band.Type: GrantFiled: December 16, 2020Date of Patent: January 17, 2023Assignee: Google LLCInventors: Zijun Chen, Julian Shaw Kelly
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Publication number: 20220414514Abstract: A quantum computing system configured for removal of leakage states can include quantum hardware including a first qubit and a second qubit, wherein the first qubit is configured to have a first transition frequency and wherein the second qubit is configured to have a second transition frequency, the first transition frequency being greater than the second transition frequency. The quantum computing system can include one or more quantum control devices configured to control operation of at least the first qubit and the second qubit, wherein the one or more quantum control devices are configured to implement a quantum gate operation on the first qubit and the second qubit based at least in part on the first transition frequency and the second transition frequency, and wherein the one or more quantum control devices are configured to periodically reset a quantum state of the first qubit.Type: ApplicationFiled: March 15, 2022Publication date: December 29, 2022Inventors: Alexander Nikolaevich Korotkov, Kevin Joseph Satzinger, Matthew James McEwen, Vadim Smelyanskiy, Paul Victor Klimov, Rami Barends, Julian Shaw Kelly, Juan Carlos Atalaya-Chavez, Zijun Chen
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Patent number: 11523211Abstract: A method and device for generating synthetic vortex sound field (SVSF) with more mode number includes the following steps: (1) a transducer array composed of N transducer units is constructed, and each transducer unit emits a sound field to generate an initial sound field; (2) at the same time, the position of the transducer unit and the phase of the sound field emitted by each transducer unit are changed, and each change produces a sound field, and thus changings times produces of sound fields, wherein the way to change the position of the transducer unit is to rotate the transducer array as a whole; (3) the initial sound field is superimposed with s of sound fields generated in step (2), to obtain SVSF with more mode number. The method and device for generating vortex sound field (VSF) can be used for underwater communication or acoustic imaging.Type: GrantFiled: January 26, 2021Date of Patent: December 6, 2022Assignees: CHENGDU INSTITUTE OF BIOLOGY, CHINESE ACADEMY OF SCIENCES, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINAInventors: Haibo Jiang, Xinyang He, Yubin Gong, Dan Tang, Yang Yang, Zijun Chen, Jiangnan Fu, Yuan Gao
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Publication number: 20220360889Abstract: A method and device for generating synthetic vortex sound field (SVSF) with more mode number includes the following steps: (1) a transducer array composed of N transducer units is constructed, and each transducer unit emits a sound field to generate an initial sound field; (2) at the same time, the position of the transducer unit and the phase of the sound field emitted by each transducer unit are changed, and each change produces a sound field, and thus changings times produces of sound fields, wherein the way to change the position of the transducer unit is to rotate the transducer array as a whole; (3) the initial sound field is superimposed with s of sound fields generated in step (2), to obtain SVSF with more mode number. The method and device for generating vortex sound field (VSF) can be used for underwater communication or acoustic imaging.Type: ApplicationFiled: January 26, 2021Publication date: November 10, 2022Inventors: Haibo JIANG, Xinyang HE, Yubin GONG, Dan TANG, Yang YANG, Zijun CHEN, Jiangnan FU, Yuan GAO
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Publication number: 20220269973Abstract: Methods, systems and apparatus for measuring quantum state purity. In one aspect, a method for determining an average purity of multiple output quantum states, wherein the multiple output quantum states correspond to applications of respective random quantum circuits of a same circuit depth to a same initial quantum state, the method including: obtaining a plurality of data items, wherein each data item corresponds to a respective random quantum circuit of the same circuit depth and represents a probability that application of the respective random quantum circuit to the initial quantum state produces a respective measurement result; calculating a variance of a plurality of data items; determining a Porter-Thomas distribution having a dimension equal to a dimension of each output quantum state; and dividing the calculated variance by a variance of the Porter-Thomas distribution to determine the average purity.Type: ApplicationFiled: October 24, 2019Publication date: August 25, 2022Inventors: Julian Shaw Kelly, Zijun Chen, Sergio Boixo Castrillo
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Publication number: 20220261679Abstract: Methods, systems, and apparatus for measuring the dispersive shift or linewidth of a resonator coupled to a qubit. In one aspect, a method includes the actions of: generating resonator response data, comprising, for each of two computational states of the qubit: for each of multiple qubit drive frequencies: for each of multiple resonator drive frequencies: preparing the qubit in the computational state; applying a first drive pulse with the resonator drive frequency to the resonator, applying a second drive pulse with the qubit drive frequency to the qubit; measuring the state of the qubit; and processing the generated resonator response data to determine the dispersive shift or linewidth of the resonator.Type: ApplicationFiled: June 27, 2019Publication date: August 18, 2022Inventors: Daniel Thomas Sank, Zijun Chen
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Patent number: 11309634Abstract: A novel synthetic uniform circular array (SUCA) method for generating vortex electromagnetic (EM) wave carrying high orbital angular momentum (OAM) mode has the following steps. N antenna elements are placed radially to form a uniform circular array (UCA), where N is a positive integer. By rotating the array elements to various spatial locations, modifying their feeding phases, and superimposing the generated fields at various spatial locations, SUCA can beat the limit of space and configure more array elements to generate vortex electromagnetic (EM) waves carrying high mode OAMs. Meanwhile, due to the more synthetic array elements and smaller aperture than the traditional UCA, the purity of OAM mode is higher and it is more flexible to adjust the main lobe directions of these vortex waves carrying different OAM modes, and can generate vortex EM waves.Type: GrantFiled: August 28, 2020Date of Patent: April 19, 2022Assignees: CHENGDU INSTITUTE OF BIOLOGY, CHINESE ACADEMY OF SCIENCES, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINAInventors: Haibo Jiang, Zijun Chen, Yubin Gong, Yang Yang, Shaomeng Wang, Chengbo Gui, Jiangnan Fu, Xinyang He
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Publication number: 20220094068Abstract: A novel synthetic uniform circular array (SUCA) method for generating vortex electromagnetic (EM) wave carrying high orbital angular momentum (OAM) mode has the following steps. N antenna elements are placed radially to form a uniform circular array (UCA), where N is a positive integer. By rotating the array elements to various spatial locations, modifying their feeding phases, and superimposing the generated fields at various spatial locations, SUCA can beat the limit of space and configure more array elements to generate vortex electromagnetic (EM) waves carrying high mode OAMs. Meanwhile, due to the more synthetic array elements and smaller aperture than the traditional UCA, the purity of OAM mode is higher and it is more flexible to adjust the main lobe directions of these vortex waves carrying different OAM modes, and can generate vortex EM waves.Type: ApplicationFiled: August 28, 2020Publication date: March 24, 2022Inventors: Haibo JIANG, Zijun CHEN, Yubin GONG, Yang YANG, Shaomeng WANG, Chengbo GUI, Jiangnan FU, Xinyang HE
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Publication number: 20190153084Abstract: The present invention relates to isolated antibodies and antigen-binding fragments thereof which bind human BMP9 and compositions and methods of use thereof.Type: ApplicationFiled: July 5, 2018Publication date: May 23, 2019Applicant: NOVARTIS AGInventors: Zijun Chen, Sujun Deng, Yun He, Dagang Huang, Markus Kugler, Qian Li, Chris Xiangyang Lu, Xiao Luo, Yongqiang Shan, Kathrin Ulrike Tissot-Daguette, Jing Wu
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Patent number: 10047155Abstract: The present invention relates to isolated antibodies and antigen-binding fragments thereof which bind human BMP9 and compositions and methods of use thereof.Type: GrantFiled: May 26, 2016Date of Patent: August 14, 2018Assignee: NOVARTIS AGInventors: Zijun Chen, Sujun Deng, Yun He, Dagang Huang, Markus Kugler, Qian Li, Chris Xiangyang Lu, Xiao Luo, Yongqiang Shan, Kathrin Ulrike Tissot-Daguette, Jing Wu
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Publication number: 20160355583Abstract: The present invention relates to isolated antibodies and antigen-binding fragments thereof which bind human BMP9 and compositions and methods of use thereof.Type: ApplicationFiled: May 26, 2016Publication date: December 8, 2016Applicant: NOVARTIS AGInventors: Zijun CHEN, Sujun DENG, Yun HE, Dagang HUANG, Markus KUGLER, Qian LI, Chris Xiangyang LU, Xiao LUO, Yongqiang SHAN, Kathrin Ulrike TISSOT-DAGUETTE, Jing WU
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Patent number: 8614549Abstract: The present invention is providing an emergency illumination system based on combined LED lamps, comprising: combined LED lamps, a power driver of the lamps, an electromagnetic sensors, an emergency controller, a storage battery and an emergency charger; said external power supply, electromagnetic sensors, power driver of the lamps and conventional illumination LED lamps are in turn connected to form a conventional illumination load circuit; said external power supply, electromagnetic sensors, emergency charger, storage battery are in turn connected to form an emergency illumination charging circuit; magnetic catheter in said electromagnetic sensors serving as a start switch connects with said emergency controller; said emergency controller connects to the storage battery and emergency illumination LED lamps respectively thereby forming an emergency illumination load circuit; It is an uninterrupted illumination system, which comprise a dual-use lamp consisting of conventional illumination, and emergency illumType: GrantFiled: December 31, 2011Date of Patent: December 24, 2013Inventors: Baoyan Chang, Zijun Chen, Kari Zhuang, Zhenqiu Li, Lei Dong
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Publication number: 20130049590Abstract: The present invention is providing an emergency illumination system based on combined LED lamps, comprising: combined LED lamps, a power driver of the lamps, an electromagnetic sensors, an emergency controller, a storage battery and an emergency charger; said external power supply, electromagnetic sensors, power driver of the lamps and conventional illumination LED lamps are in turn connected to form a conventional illumination load circuit; said external power supply, electromagnetic sensors, emergency charger, storage battery are in turn connected to form an emergency illumination charging circuit; magnetic catheter in said electromagnetic sensors serving as a start switch connects with said emergency controller; said emergency controller connects to the storage battery and emergency illumination LED lamps respectively thereby forming an emergency illumination load circuit; It is an uninterrupted illumination system, which comprise a dual-use lamp consisting of conventional illumination, and emergency illumType: ApplicationFiled: December 31, 2011Publication date: February 28, 2013Inventors: Baoyan Chang, Zijun Chen, Kari Zhuang, Zhenqiu Li, Lei Dong