Patents by Inventor Pu Han

Pu Han 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).

  • Publication number: 20230347589
    Abstract: Exemplary systems and methods utilize laser heating to improve the surface finish, dimensional tolerance, and material strength of objects constructed via fused filament fabrication,
    Type: Application
    Filed: April 25, 2023
    Publication date: November 2, 2023
    Inventors: Keng Hsu, Pu Han
  • Patent number: 10541195
    Abstract: A package structure for a capacitive coupling isolator is provided. The package structure includes a first and a second leadframes, a transmitter, a receiver and a packaging body. The first leadframe includes a first and a second signal input pins and a first electrode plate, and the second leadframe includes a first and a second signal output pins and a second electrode plate. The first and second electrode plates are arranged one above another and aligned with each other for forming a plurality of capacitors. The transmitter is disposed on the first leadframe and the receiver is disposed on the second leadframe. The packaging body encloses the first and second leadframes and is filled therebetween for electrically isolating the first and second leadframes from each other.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: January 21, 2020
    Assignee: LITE-ON SINGAPORE PTE. LTD.
    Inventors: You-Fa Wang, Wei-Wen Lai, Pu-Han Lin, Yuan-Lung Wu
  • Patent number: 10510728
    Abstract: The instant disclosure includes a magnetic coupling package structure with duo leadframes for a magnetically coupled isolator and a method for manufacturing the same. The method includes a leadframe providing step, a chip connecting step and a coil alignment step. The leadframe providing step includes providing a first and a second leadframe each including a chip carrying portion, a coil portion, a plurality of pins and floating pins. The chip connecting step includes disposing at least a first chip and at least a second chip onto the corresponding chip carrying portions for electrically connecting the chips to the pins. The coil alignment step includes arranging the first leadframe above or beneath the second leadframe and applying a first and a second magnetic field to the first and the second leadframes respectively for aligning the coil portions, thereby controlling the coupling effect between two coil portions.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 17, 2019
    Assignee: LITE-ON SINGAPORE PTE. LTD.
    Inventors: You-Fa Wang, Wei-Wen Lai, Pu-Han Lin
  • Publication number: 20190237394
    Abstract: A package structure for a capacitive coupling isolator is provided. The package structure includes a first and a second leadframes, a transmitter, a receiver and a packaging body. The first leadframe includes a first and a second signal input pins and a first electrode plate, and the second leadframe includes a first and a second signal output pins and a second electrode plate. The first and second electrode plates are arranged one above another and aligned with each other for forming a plurality of capacitors. The transmitter is disposed on the first leadframe and the receiver is disposed on the second leadframe. The packaging body encloses the first and second leadframes and is filled therebetween for electrically isolating the first and second leadframes from each other.
    Type: Application
    Filed: October 19, 2018
    Publication date: August 1, 2019
    Inventors: YOU-FA WANG, WEI-WEN LAI, PU-HAN LIN, YUAN-LUNG WU
  • Publication number: 20190214368
    Abstract: The instant disclosure includes a magnetic coupling package structure with duo leadframes for a magnetically coupled isolator and a method for manufacturing the same. The method includes a leadframe providing step, a chip connecting step and a coil alignment step. The leadframe providing step includes providing a first and a second leadframe each including a chip carrying portion, a coil portion, a plurality of pins and floating pins. The chip connecting step includes disposing at least a first chip and at least a second chip onto the corresponding chip carrying portions for electrically connecting the chips to the pins. The coil alignment step includes arranging the first leadframe above or beneath the second leadframe and applying a first and a second magnetic field to the first and the second leadframes respectively for aligning the coil portions, thereby controlling the coupling effect between two coil portions.
    Type: Application
    Filed: July 20, 2018
    Publication date: July 11, 2019
    Inventors: YOU-FA WANG, WEI-WEN LAI, PU-HAN LIN
  • Patent number: 6288916
    Abstract: A UPS system for communications systems. The UPS system comprises an input stage that generates primary and standby AC power signals. The primary and standby AC power signals are passed through an isolation transformer and through an output rectifier to obtain an output DC power signal. A plurality of output inverters are used to generate a plurality of output AC power signals from the output DC power signal. A switch circuit is provided to connect one or more of the output DC power signals to one or more loads of the communications system.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: September 11, 2001
    Assignee: Alpha Technologies, Inc.
    Inventors: Frank Liu, Pu Han, Lam Vu