Patents by Inventor YI-ZHOU CHEN

YI-ZHOU 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).

  • Publication number: 20250105928
    Abstract: A system for radio frequency (RF) residual sideband (RSB) calibration includes a complex (in phase/quadrature (I/Q)) signal receiver, a signal generator configured to generate a transmit (Tx) signal, a first phase shifter operably coupled to the real signal transmitter, a first signal combiner configured to combine a receive (Rx) signal with the transmit (Tx) signal to generate a first combined signal, a second phase shifter configured to provide a selected phase shift to the first combined signal, and a complex downconverter configured to generate an in phase Rx signal and a quadrature Rx signal alternatively using an in phase LO signal and a quadrature LO signal to generate one or more signals indicative of relative Tx-Rx LO phase (?), amplitude (A), Tx LO I/Q phase mismatch (?), Rx I/Q amplitude mismatch (?), and Rx I/Q phase mismatch (?) at the output of the complex receiver.
    Type: Application
    Filed: September 21, 2023
    Publication date: March 27, 2025
    Inventors: Cheng-Han WANG, Varun Amar REDDY, Qi ZHOU, Hsin-Hsu CHEN, Liang ZHAO, Koorosh AKHAVAN, Yi ZENG, Chan Hong PARK, Le Nguyen LUONG
  • Publication number: 20250034290
    Abstract: The present invention relates to a functional cyclic olefin polymer obtained from hydrogenation of a cyclic olefin polymer, wherein the cyclic olefin polymer comprises at least a monomeric unit A? derived from a monomer A having a norbornene ring and a polar functional group, wherein the amount of the monomeric unit A? is in the range of from 20% to 100% by mole, 50% to 100% by mole, from 60% to 100% by mole, or from 70% to 100% by mole, based on the total amount of the monomeric units of the cyclic olefin polymer. The present invention further relates to a process for producing the functional cyclic olefin polymer, a composition comprising the functional cyclic olefin polymer, and the use of the functional cyclic olefin polymer. The functional cyclic olefin polymer of the present invention exhibits improved properties, especially in terms of mechanical properties and barrier properties.
    Type: Application
    Filed: October 31, 2022
    Publication date: January 30, 2025
    Inventors: Qingshuang Liu, Saifudin M. Abubakar, Yi Zhou, Ke Ran Chen, Yingcheng Pan, Tian Li, Yang Wang
  • Patent number: 11426346
    Abstract: A lutein-containing ophthalmic composition, wherein the ophthalmic composition is mainly consisting of a natural anti-inflammatory substance, a substance with increasing liquid viscosity, and an artificial tear. The substance with increasing liquid viscosity could apply the ophthalmic composition to elongate the retention time on the ocular surface, thereby increasing the retention time of anti-inflammatory substance on the ocular surface for treating dry eye syndrome and inhibiting ocular surface inflammation.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: August 30, 2022
    Assignee: TAIPEI MEDICAL UNIVERSITY
    Inventors: Ching-Li Tseng, I-Chan Lin, Yi-Zhou Chen, Yu-Lun Chuang, Cheng-Han Tsai, Zhi-Yu Chen
  • Publication number: 20200222316
    Abstract: A lutein-containing ophthalmic composition, wherein the ophthalmic composition is mainly consisting of a natural anti-inflammatory substance, a substance with increasing liquid viscosity, and an artificial tear. The substance with increasing liquid viscosity could apply the ophthalmic composition to elongate the retention time on the ocular surface, thereby increasing the retention time of anti-inflammatory substance on the ocular surface for treating dry eye syndrome and inhibiting ocular surface inflammation.
    Type: Application
    Filed: October 13, 2019
    Publication date: July 16, 2020
    Inventors: CHING-LI TSENG, I-CHAN LIN, YI-ZHOU CHEN, YU-LUN CHUANG, CHENG-HAN TSAI, ZHI-YU CHEN