Patents by Inventor Mei Pan

Mei Pan 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).

  • Patent number: 12247030
    Abstract: The present invention is related to processes for preparing a composition comprising an enantiomeric excess of a substituted pyrrolo[2,3-d]pyrimidine utilizing chiral acids.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: March 11, 2025
    Assignees: Incyte Holdings Corporation, Incyte Corporation
    Inventors: Jiacheng Zhou, David Meloni, Yongchun Pan, Mei Li
  • Patent number: 12120038
    Abstract: A switch and a scheduling method for packet forwarding of the same are provided. The switch includes a plurality of absorb queues, a plurality of egress ports, and an absorb scheduler. Each of the egress ports includes a plurality of egress queues that are respectively connected to one of the absorb queues that are different from one another. The scheduling method includes: generating a priority state for each of the egress queues of each of the egress ports; a packet forwarding priority state of each of the absorb queues is determined according to the priority state of each of the egress queues connected thereto; and the absorb scheduler selecting one of the absorb queues to send a packet stored therein to a target egress queue of a target egress port to be sent to, according to the priority state of each of the egress queues.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: October 15, 2024
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Kuo-Cheng Lu, Yung-Chang Lin, Yu-Mei Pan
  • Patent number: 11942698
    Abstract: A dual-band HP omnidirectional antenna includes an electrically small (ES) first omnidirectional loop antenna for a first band, and a second omnidirectional loop antenna for a second band. The first omnidirectional loop antenna and the second omnidirectional loop antenna are capable of operating independently in the first band and the second band. A loading effect of the second omnidirectional loop antenna adapted to suppress a higher-order mode of the first omnidirectional loop antenna.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: March 26, 2024
    Assignee: City University of Hong Kong
    Inventors: Kwok Wa Leung, Peng Fei Hu, Yong Mei Pan, Shao Yong Zheng
  • Patent number: 11831413
    Abstract: A time-division multiplexing (TDM) scheduler determines a service order for serving N packet transmission requesters. The TDM scheduler includes: N current count value generators configured to serve the N packet transmission requesters respectively, and generate N current count values according to parameters of the N packet transmission requesters, a previous scheduling result generated by the EDD scheduler previously, and a predetermined counting rule; and an earliest due date (EDD) scheduler configured to generate a current scheduling result for determining the service order according to the N current count values and a predetermined urgency decision rule, wherein an extremum of the N current count values relates to one of the N packet transmission requesters, and the EDD scheduler selects this requester as the one to be served preferentially.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: November 28, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Kuo-Cheng Lu, Yu-Mei Pan, Yung-Chang Lin
  • Publication number: 20230057059
    Abstract: A time-division multiplexing (TDM) scheduler determines a service order for serving N packet transmission requesters. The TDM scheduler includes: N current count value generators configured to serve the N packet transmission requesters respectively, and generate N current count values according to parameters of the N packet transmission requesters, a previous scheduling result generated by the EDD scheduler previously, and a predetermined counting rule; and an earliest due date (EDD) scheduler configured to generate a current scheduling result for determining the service order according to the N current count values and a predetermined urgency decision rule, wherein an extremum of the N current count values relates to one of the N packet transmission requesters, and the EDD scheduler selects this requester as the one to be served preferentially.
    Type: Application
    Filed: October 27, 2022
    Publication date: February 23, 2023
    Inventors: KUO-CHENG LU, YU-MEI PAN, YUNG-CHANG LIN
  • Patent number: 11563691
    Abstract: Disclosed is a time-division multiplexing (TDM) scheduler capable of determining a service order for serving N packet transmission requesters. The TDM scheduler includes: N current count value generators configured to serve the N packet transmission requesters respectively, and generate N current count values according to parameters of the N packet transmission requesters, a previous scheduling result generated by the EDD scheduler previously, and a predetermined counting rule; and an earliest due date (EDD) scheduler configured to generate a current scheduling result for determining the service order according to the N current count values and a predetermined urgency decision rule, wherein an extremum of the N current count values relates to one of the N packet transmission requesters, and the EDD scheduler selects this requester as the one to be served preferentially.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: January 24, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Kuo-Cheng Lu, Yu-Mei Pan, Yung-Chang Lin
  • Publication number: 20220302587
    Abstract: A dual-band HP omnidirectional antenna includes an electrically small (ES) first omnidirectional loop antenna for a first band, and a second omnidirectional loop antenna for a second band. The first omnidirectional loop antenna and the second omnidirectional loop antenna are capable of operating independently in the first band and the second band. A loading effect of the second omnidirectional loop antenna adapted to suppress a higher-order mode of the first omnidirectional loop antenna.
    Type: Application
    Filed: March 3, 2022
    Publication date: September 22, 2022
    Inventors: Kwok Wa Leung, Peng Fei HU, Yong Mei Pan, Shao Yong Zheng
  • Publication number: 20220200925
    Abstract: Disclosed is a time-division multiplexing (TDM) scheduler capable of determining a service order for serving N packet transmission requesters. The TDM scheduler includes: N current count value generators configured to serve the N packet transmission requesters respectively, and generate N current count values according to parameters of the N packet transmission requesters, a previous scheduling result generated by the EDD scheduler previously, and a predetermined counting rule; and an earliest due date (EDD) scheduler configured to generate a current scheduling result for determining the service order according to the N current count values and a predetermined urgency decision rule, wherein an extremum of the N current count values relates to one of the N packet transmission requesters, and the EDD scheduler selects this requester as the one to be served preferentially.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 23, 2022
    Inventors: KUO-CHENG LU, YU-MEI PAN, YUNG-CHANG LIN
  • Publication number: 20220070109
    Abstract: A switch and a scheduling method for packet forwarding of the same are provided. The switch includes a plurality of absorb queues, a plurality of egress ports, and an absorb scheduler. Each of the egress ports includes a plurality of egress queues that are respectively connected to one of the absorb queues that are different from one another. The scheduling method includes: generating a priority state for each of the egress queues of each of the egress ports; a packet forwarding priority state of each of the absorb queues is determined according to the priority state of each of the egress queues connected thereto; and the absorb scheduler selecting one of the absorb queues to send a packet stored therein to a target egress queue of a target egress port to be sent to, according to the priority state of each of the egress queues.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Inventors: KUO-CHENG LU, YUNG-CHANG LIN, YU-MEI PAN
  • Publication number: 20210395755
    Abstract: The disclosure discloses a method for increasing the intracellular heme content of Escherichia coli and belongs to the field of metabolic engineering. In the disclosure, in E. coli, the gene mscS encoding a small conductance mechanically sensitive ion channel protein is knocked out, the gene aroG encoding 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase is knocked out, or the gene hemA encoding glutamyl-tRNA reductase is overexpressed. The constructed recombinant strain is cultured in an LB culture medium, and the heme content can reach 47.6 ?mol·L?1, which is significantly higher than that of a control strain. The recombinant strain has the value of wide application.
    Type: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Inventors: Lei Tang, Mei Pan, Shuangxin Liu
  • Patent number: 11002440
    Abstract: A light source module includes a transparent conductive substrate and plural light source groups. The transparent conductive substrate includes a substrate base, plural positive electrodes, plural negative electrodes and plural gaps. The plural positive electrodes and the plural negative electrodes are installed on the substrate base. Each light source group includes plural light-emitting elements. The plural positive electrodes are separately arranged. Consequently, the resistances of the light-emitting elements are substantially equal.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: May 11, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Wei-Ping Chan, Wei-Chiang Huang, Chuan-Tai Hsiao, Xiu-Mei Pan
  • Patent number: 10965032
    Abstract: A dielectric resonator antenna includes a dielectric resonator element, a ground plane, and a conductive feeding arrangement. The ground plane is connected with the dielectric resonator element, and is operable to generate a first electromagnetic radiation. The conductive feeding arrangement is operable to generate a second electromagnetic radiation. During operation, simultaneous generation of the first electromagnetic radiation and the second electromagnetic radiation provides a unilateral electromagnetic radiation.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 30, 2021
    Assignee: City University of Hong Kong
    Inventors: Kwok Wa Leung, Yong Mei Pan, Lei Guo
  • Patent number: 10910721
    Abstract: A simple and compact filtering dielectric resonator antenna comprising: a ground plane, a dielectric substrate defined on the ground plane, a dielectric resonator defined on the dielectric substrate, and a hybrid feeding line, the hybrid feeding line comprises: a microstrip line and a metallic conformal strip, and the microstrip line comprises: a microstrip main branch, a first microstrip stub and a second microstrip stub. In the present invention, a hybrid feeding line is firstly employed to a dielectric resonator antenna. It has been shown that this hybrid feeding line can not only increase the impedance bandwidth of the passband but also can introduce two radiation nulls right near the band edges. Both good filtering and radiating performances are therefore obtained without any extra filtering circuit, giving a very compact structure.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: February 2, 2021
    Assignee: South China University of Technology
    Inventors: Yong-Mei Pan, Pengfei Hu, Kwok Wa Leung, Xiuyin Zhang
  • Patent number: 10587047
    Abstract: A filtering antenna element and a dual-band filtering antenna array using filtering antenna elements for mutual coupling suppression have been disclosed. The filtering antenna element comprises a feeding element, a sub-substrate, a sup-substrate and an air gap between the sub-substrate and the sup-substrate. A stacked patch is fabricated on a top surface of the sub-substrate, a driven patch and a ground plane are fabricated on a top surface and a bottom surface of the sub-substrate. An asymmetric E-slot is arranged on the driven patch and a shorting pin is inserted into the sub-substrate for generating radiation nulls in stopbands. The dual-band filtering antenna array is compact and needs no feeding network with an isolation of 35 dB, and is suitable for potential base station applications.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 10, 2020
    Assignee: South China University of Technology
    Inventors: Xiu Yin Zhang, Yao Zhang, Yong-Mei Pan
  • Publication number: 20190341695
    Abstract: A simple and compact filtering dielectric resonator antenna comprising: a ground plane, a dielectric substrate defined on the ground plane, a dielectric resonator defined on the dielectric substrate, and a hybrid feeding line, the hybrid feeding line comprises: a microstrip line and a metallic conformal strip, and the microstrip line comprises: a microstrip main branch, a first microstrip stub and a second microstrip stub. In the present invention, a hybrid feeding line is firstly employed to a dielectric resonator antenna. It has been shown that this hybrid feeding line can not only increase the impedance bandwidth of the passband but also can introduce two radiation nulls right near the band edges. Both good filtering and radiating performances are therefore obtained without any extra filtering circuit, giving a very compact structure.
    Type: Application
    Filed: June 27, 2018
    Publication date: November 7, 2019
    Inventors: Yong-Mei Pan, Pengfei Hu, Kwok Wa Leung, Xiuyin Zhang
  • Publication number: 20190214732
    Abstract: A dielectric resonator antenna includes a dielectric resonator element, a ground plane, and a conductive feeding arrangement. The ground plane is connected with the dielectric resonator element, and is operable to generate a first electromagnetic radiation. The conductive feeding arrangement is operable to generate a second electromagnetic radiation. During operation, simultaneous generation of the first electromagnetic radiation and the second electromagnetic radiation provides a unilateral electromagnetic radiation.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 11, 2019
    Inventors: Kwok Wa LEUNG, Yong Mei PAN, Lei GUO
  • Patent number: 10347990
    Abstract: A low-profile dual-band filtering patch antenna and its application to LTE MIMO system are disclosed. By using two embedded U-shaped radiating patches and a multi-stub microstrip feed-line, two operating bands and four radiation nulls can been generated and individually controlled, the design is thus very simple and flexible. Based on the proposed low-profile dual-band filtering patch antenna, a MIMO antenna with a very low profile, low mutual coupling and low ECCs has been presented.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: July 9, 2019
    Assignee: South China University of Technology
    Inventors: Xiu Yin Zhang, Yao Zhang, Yong-Mei Pan, Wen Duan
  • Publication number: 20190131710
    Abstract: A wideband circularly polarized antenna, comprising a ground plane, a radiating element and a plurality of metallic plates; the radiating element is defined above the ground plane, the metallic plates are sequentially and vertically defined around the ground plane, and displacements from the metallic plates to the center of the ground plane are the same. The wideband circularly polarized antenna provided by the present invention has a broad bandwidth and a compact configuration.
    Type: Application
    Filed: January 31, 2018
    Publication date: May 2, 2019
    Inventors: Yong-Mei Pan, Wanjun Yang, Shaoyong Zheng, Pengfei Hu
  • Publication number: 20180183148
    Abstract: A compact quasi-isotropic shorted patch antenna and method of fabricating the same are disclosed. The patch antenna uses a small ground plane which has same dimensions with the radiating patch, therefore the radiation caused by the currents on the radiating patch is cancelled out by that comes from the opposite currents on the ground plane. Quasi-TEM mode is excited in the radiating patch cavity, generating surface magnetic currents on the open-ended slot and electric currents on the shorted side-wall. The corresponding currents are found not only perpendicular but also quadrature with each other, and therefore the patch antenna can provide a quasi-isotropic radiation pattern without involving complex feeding circuit.
    Type: Application
    Filed: May 17, 2017
    Publication date: June 28, 2018
    Inventors: Yong-Mei Pan, Shaoyong Zheng
  • Patent number: D928268
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: August 17, 2021
    Inventor: Mei Pan