Patents by Inventor Likun Zhang
Likun Zhang 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: 20240145966Abstract: A method for manufacturing an electrically conductive terminal includes steps of plating a nickel plating layer on a surface of the conductive metal base layer, plating a silver plating layer on a surface of the nickel plating layer, and plating a tin plating layer on a surface of the silver plating layer.Type: ApplicationFiled: October 26, 2023Publication date: May 2, 2024Applicants: Tyco Electronics AMP Guangdong Ltd, Tyco Electronics (Shanghai) Co., Ltd.Inventors: Jiaoyong (Mac) Liu, Jialin Zhang, Hongqiang (Sean) Han, Likun Ma
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Patent number: 11946062Abstract: A gene PpHSP21 with black spot disease resistance is isolated from Pyrus pyrifolia. A nucleotide sequence of the gene PpHSP21 is shown in SEQ ID NO. 1. An amino acid sequence of an encoded protein of the PpHSP21 gene is shown in SEQ ID NO. 2. By constructing the plant overexpression vector and silencing vector of the gene PpHSP21, the gene PpHSP21 is introduced into the plant by the Agrobacterium-mediated genetic transformation method, so that the gene PpHSP21 is able to be overexpressed in the plants, thereby significantly improving black spot disease resistance in plants. The discovery and identification of the gene PpHSP21 provide new genetic resources for stress resistance molecular design and breeding in plants, and to provide new genetic resources for the implementation of green agriculture. The development and utilization of the genetic resources is conducive to reducing agricultural production costs and achieving environmental friendliness.Type: GrantFiled: July 30, 2021Date of Patent: April 2, 2024Assignee: NANJING AGRICULTURAL UNIVERSITYInventors: Shaoling Zhang, Xiaosan Huang, Caihua Xing, Qinghai Qiao, Zhihua Xie, Likun Lin, Kaijie Qi, Huizhen Dong
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Patent number: 11085059Abstract: Methylopila sp. and use thereof in the selective resolution preparation of (S)-?-ethyl-2-oxo-1-pyrrolidineacetate. Methylopila sp. that produces enzymes is subjected to cell immobilization, and is then applied to the biological resolution of a racemate (R,S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester to prepare high optically pure (S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester, which is further subjected to a hydrolysis reaction to obtain (S)-?-ethyl-2-oxo-1-pyrrolidineacetate. The present invention achieves a high conversion yield up to 50.0% or more, a good stereoselectivity, and an enantiomeric excess value e.e.s (%) of (S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester not less than 99.5; the catalytic efficiency is high; the concentration of the racemic substrate in the resolution reaction is up to 500 g/L, the reaction time does not exceed 15 h, the number of reuse times of the immobilized cells is not lower than 35.Type: GrantFiled: September 19, 2017Date of Patent: August 10, 2021Assignee: CHANGXING PHARMACEUTICAL CO. LTD.Inventors: Yanming Xiao, Likun Zhang, Minfan Qian, Yanbing Yan, Weiping Tan
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Publication number: 20190360011Abstract: Methylopila sp. and use thereof in the selective resolution preparation of (S)-?-ethyl-2-oxo-1-pyrrolidineacetate. Methylopila sp. that produces enzymes is subjected to cell immobilization, and is then applied to the biological resolution of a racemate (R,S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester to prepare high optically pure (S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester, which is further subjected to a hydrolysis reaction to obtain (S)-?-ethyl-2-oxo-1-pyrrolidineacetate. The present invention achieves a high conversion yield up to 50.0% or more, a good stereoselectivity, and an enantiomeric excess value e.e.s(%) of (S)-?-ethyl-2-oxo-1-pyrrolidineacetic acid ethyl ester not less than 99.5; the catalytic efficiency is high; the concentration of the racemic substrate in the resolution reaction is up to 500 g/L, the reaction time does not exceed 15 h, the number of reuse times of the immobilized cells is not lower than 35.Type: ApplicationFiled: September 19, 2017Publication date: November 28, 2019Inventors: Yanming Xiao, Likun Zhang, Minfan Qian, Yanbing Yan, Weiping Tan
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Patent number: 9768899Abstract: An optical add/drop multiplexer branching apparatus is provided in the embodiments of the present invention, where the optical add/drop multiplexer branching unit includes: a trunk input end, a branch input end, a trunk output end, a branch output end, an optical add/drop multiplexer, a first coupler, a first detection circuit, and a control circuit, where the optical add/drop multiplexer includes an optical switch. A detection circuit detects whether a fault occurs in a trunk, and in a case in which a fault occurs in the trunk, a working mode is switched from a first working mode to a second working mode, to implement automatic redundancy on the trunk and ensure normal communication on a branch.Type: GrantFiled: June 24, 2016Date of Patent: September 19, 2017Assignee: Huawei Marine Networks Co., Ltd.Inventors: Likun Zhang, Wendou Zhang, Keqiang Cui
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Publication number: 20160308639Abstract: An optical add/drop multiplexer branching unit is provided, where the optical add/drop multiplexer branching unit includes: a trunk input end, a branch input end, a trunk output end, a branch output end, an optical add/drop multiplexer, a first coupler, a first detection circuit, and a control circuit, where the optical add/drop multiplexer includes an optical switch. A detection circuit detects whether a fault occurs in a trunk, and in a case in which a fault occurs in the trunk, a working mode is switched from a first working mode to a second working mode, to implement automatic redundancy on the trunk and ensure normal communication on a branch.Type: ApplicationFiled: June 24, 2016Publication date: October 20, 2016Inventors: Likun ZHANG, Wendou ZHANG, Keqiang CUI
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Patent number: 8886050Abstract: The present invention provides a wavelength division multiplexing system and a method and device for its residual dispersion compensation, wherein the device for residual dispersion compensation of wavelength division multiplexing system comprises: a performance parameter detecting device for receiving and detecting performance parameter of receiving terminal optical signal and sending detecting result of the performance parameter to a central control device; the central control device for deciding a dispersion regulating mode of a tunable dispersion compensator according to the detecting result of the performance parameter and sending the dispersion regulating mode to a tunable dispersion compensator control device through control signaling; and the tunable dispersion compensator control device for receiving the control signaling sent by the central control device and adjusting dispersion compensation amount of the tunable dispersion compensator according to the control signaling in order to make residual diType: GrantFiled: January 10, 2007Date of Patent: November 11, 2014Assignee: ZTE CorporationInventors: Likun Zhang, Jiaying Wang
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Publication number: 20140255020Abstract: A method, an optical add-drop multiplexer branching unit, and a system for disaster recovery of an optical communication system are provided. The method for disaster recovery of an optical communication system using an optical add-drop multiplexer unit (OADM) includes: detecting a transmission link fault in an optical communication system; and when a transmission link fault is detected, switching the state of a link where the transmission link fault occurs from pass-through to loopback, so that an optical signal input from a non-faulty end of the link is looped back to the end for outputting. In this way, when a transmission link fault occurs in an optical communication system, the power level of a link where the transmission link fault occurs can be maintained by using the solutions in the embodiments of the present invention, thereby keeping transmission performance stable.Type: ApplicationFiled: May 20, 2014Publication date: September 11, 2014Applicant: Huawei Marine Networks Co., Ltd.Inventors: Wendou Zhang, Liping Ma, Likun Zhang
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Publication number: 20100178062Abstract: The present invention discloses a RZ-DPSK modulated optical signal generation apparatus and method, wherein the apparatus comprises: a high speed multiplexer for amplifying a photo-electric converted high speed data signal and de-multiplexing it into parallel low speed signals, pre-coding the parallel low speed signals, then multiplexing the pre-coded low speed signals into a high speed data signal, inputting a processed data + and synchronous clock into a first RZ converter and amplifier, and inputting a pre-coded data ? and synchronous clock into a second RZ converter and amplifier; a first RZ converter and amplifier and a second RZ converter and amplifier for converting data + and data ? NRZ signals into RZ signals, then amplify them separately, and use the amplified RZ signal to drive a LiNbO3 modulator; a LiNbO3 modulator has differential inputs, when the CW laser emits optical power and transmits through the modulator, a RZ-DPSK modulated optical signal is obtained from the modulator output.Type: ApplicationFiled: November 28, 2007Publication date: July 15, 2010Applicant: ZTE CORPORATIONInventors: Likun Zhang, Changwu Xu, Hong Yi
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Publication number: 20090202248Abstract: The present invention provides a wavelength division multiplexing system and a method and device for its residual dispersion compensation, wherein the device for residual dispersion compensation of wavelength division multiplexing system comprises: a performance parameter detecting device for receiving and detecting performance parameter of receiving terminal optical signal and sending detecting result of the performance parameter to a central control device; the central control device for deciding a dispersion regulating mode of a tunable dispersion compensator according to the detecting result of the performance parameter and sending the dispersion regulating mode to a tunable dispersion compensator control device through control signaling; and the tunable dispersion compensator control device for receiving the control signaling sent by the central control device and adjusting dispersion compensation amount of the tunable dispersion compensator according to the control signaling in order to make residual diType: ApplicationFiled: January 10, 2007Publication date: August 13, 2009Inventors: Likun Zhang, Jiaying Wang