Patents by Inventor Xiang Yi

Xiang Yi 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: 11160783
    Abstract: The present invention provides compounds, pharmaceutical compositions and methods for the treatment of specific cancers. Such compositions may generally comprise a compound of formula (I): wherein R1-R3 are as defined herein, or pharmaceutically acceptable salts or esters thereof; and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: November 2, 2021
    Assignee: Eisai R&D Management Co., LTD.
    Inventors: Sergei Agoulnik, Bruce Decosta, Hong Du, Yimin Jiang, Xiang-Yi Li, Kenichi Nomoto, John (Yuan) Wang, Huiming Zhang
  • Patent number: 11128333
    Abstract: A signal receiving circuit amplifies a radio frequency signal by using a first radio frequency amplifier, outputs a first amplified signal in a same phase, amplifies the radio frequency signal by using a second radio frequency amplifier, and outputs a second amplified signal at an inverse phase. A first mixer mixes a first local oscillator signal with the first amplified signal to obtain a first frequency mixing signal, and a second mixer mixes a second local oscillator signal with the second amplified signal to obtain a second frequency mixing signal, where a phase of the first local oscillator signal is opposite to a phase of the second local oscillator signal. After adding the first frequency mixing signal and the second frequency mixing signal, an output interface outputs the first frequency mixing signal and the second frequency mixing signal.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: September 21, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Kaituo Yang, Xiang Yi, Chirn Chye Boon, Junping Zhang
  • Publication number: 20210273773
    Abstract: A transceiver system is configured to concurrently send TX signals and receive RX signals on an antenna system in the same frequency band. A bi-directional frequency converter circuit modulates the TX signals and RX signals by a modulation frequency. The modulated TX signals and RX are frequency shifted so that they have different frequencies that are not in the same frequency band. For example, the TX signal may be shifted to a higher frequency and the RX signal may be shifted to a lower frequency. Filters can then be used to isolate the TX signal and the RX signal for transmission and/or processing.
    Type: Application
    Filed: February 25, 2021
    Publication date: September 2, 2021
    Inventors: Xiang YI, Kenneth E. KOLODZIEJ, Ruonan HAN
  • Publication number: 20210269789
    Abstract: The present invention provides engineered branched chain ketoacid decarboxylase (KdcA) polypeptides and compositions thereof, as well as polynucleotides encoding the engineered branched chain ketoacid decarboxylase (KdcA) polypeptides. In some embodiments, the engineered KdcA polypeptides are optimized to provide enhanced catalytic activity, as well as reduced sensitivity to proteolysis and increased tolerance to storage at elevated temperatures. The present invention also provides methods for the use of the compositions comprising the engineered KdcA polypeptides for therapeutic and industrial purposes.
    Type: Application
    Filed: June 27, 2019
    Publication date: September 2, 2021
    Inventors: Xiang Yi, Nikki Dellas, James Nicholas Riggins, Chinping Chng, Nicholas J. Agard, Kristen Jean Vallieu, Gjalt W. Huisman
  • Publication number: 20210261940
    Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Scott J. Novick, Xiang Yi, Nikki Dellas, Oscar Alvizo, Jovana Nazor, Da Duan, Vesna Mitchell, Jonathan Vroom, Santhosh Sivaramakrishnan, Nandhitha Subramanian, Jeffrey C. Moore, Mark Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Grant S. Murphy, Nicholas Marshall, Jay Russell, Keith A. Canada
  • Patent number: 11034948
    Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: June 15, 2021
    Assignee: Codexis, Inc.
    Inventors: Scott J. Novick, Xiang Yi, Nikki Dellas, Oscar Alvizo, Jovana Nazor, Da Duan, Vesna Mitchell, Jonathan Vroom, Santhosh Sivaramakrishnan, Nandhitha Subramanian, Jeffrey C. Moore, Mark Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Grant Murphy, Nicholas M. Marshall, Jay Russell, Keith A. Canada
  • Publication number: 20210054357
    Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.
    Type: Application
    Filed: November 6, 2020
    Publication date: February 25, 2021
    Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
  • Patent number: 10865402
    Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: December 15, 2020
    Assignee: Codexis, Inc.
    Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
  • Publication number: 20200354698
    Abstract: The present invention provides engineered RNA polymerase variants and compositions comprising these variants. The present invention further provides engineered T7 RNA polymerase variants and compositions comprising these variants. These variants have been evolved for selective incorporation of the m7G(5?)ppp(5?)m7G cap analog over GTP at the initiation of in vitro transcription. The present invention also provides methods for selective capping of RNA transcripts.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Inventors: Mathew G. Miller, Chinping Chng, Oscar Alvizo, Melissa Ann Mayo, James Nicholas Riggins, Xiang Yi, Jonathan S. Penfield, Gjalt W. Huisman, Jared Davis, Yasushi Saotome
  • Publication number: 20200354699
    Abstract: The present invention provides engineered RNA polymerase variants and compositions comprising these variants. The present invention further provides engineered T7 RNA polymerase variants and compositions comprising these variants. These variants have been evolved for selective incorporation of the m7G(5?)ppp(5?)m7G cap analog over GTP at the initiation of in vitro transcription. The present invention also provides methods for selective capping of RNA transcripts.
    Type: Application
    Filed: July 29, 2020
    Publication date: November 12, 2020
    Inventors: Mathew G. Miller, Chinping Chng, Oscar Alvizo, Melissa Ann Mayo, James Nicholas Riggins, Xiang Yi, Jonathan S. Penfield, Gjalt W. Huisman, Jared Davis, Yasushi Saotome
  • Publication number: 20200339973
    Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
  • Publication number: 20200328769
    Abstract: A signal receiving circuit amplifies a radio frequency signal by using a first radio frequency amplifier, and outputs a first amplified signal in a same phase; amplifies the radio frequency signal by using a second radio frequency amplifier, and outputs a second amplified signal at an inverse phase. A first mixer mixes a first local oscillator signal with the first amplified signal to obtain a first frequency mixing signal; a second mixer mix a second local oscillator signal with the second amplified signal to obtain a second frequency mixing signal, where a phase of the first local oscillator signal is opposite to a phase of the second local oscillator signal; and after adding the first frequency mixing signal and the second frequency mixing signal, an output interface outputs the first frequency mixing signal and the second frequency mixing signal.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Inventors: Kaituo YANG, Xiang YI, Chirn Chye BOON, Junping ZHANG
  • Patent number: 10793841
    Abstract: The present invention provides engineered T7 RNA polymerase variants and compositions thereof. These variants have been evolved for selective incorporation of the symmetrical capped GTP analog over GTP at the initiation of in vitro transcription. The present invention also provides methods for using the variants provided herein. The present invention further provides for the use of the compositions provided herein.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: October 6, 2020
    Assignee: Codexis, Inc.
    Inventors: Mathew G. Miller, Chinping Chng, Oscar Alvizo, Melissa Ann Mayo, James Nicholas Riggins, Xiang Yi, Jonathan S. Penfield, Gjalt W. Huisman
  • Patent number: 10745681
    Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: August 18, 2020
    Assignee: Codexis, Inc.
    Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
  • Patent number: 10738286
    Abstract: The present invention provides engineered RNA polymerase variants and compositions comprising these variants. The present invention further provides engineered T7 RNA polymerase variants and compositions comprising these variants. These variants have been evolved for selective incorporation of the m7G(5?)ppp(5?)m7G cap analog over GTP at the initiation of in vitro transcription. The present invention also provides methods for selective capping of RNA transcripts.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 11, 2020
    Assignee: Codexis, Inc.
    Inventors: Mathew G. Miller, Chinping Chng, Oscar Alvizo, Melissa Ann Mayo, James Nicholas Riggins, Xiang Yi, Jonathan S. Penfield, Gjalt W. Huisman, Jared Davis, Yasushi Saotome
  • Publication number: 20200010823
    Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 9, 2020
    Inventors: Scott J. Novick, Xiang Yi, Nikki Dellas, Oscar Alvizo, Jovana Nazor, Da Duan, Vesna Mitchell, Jonathan Vroom, Santhosh Sivaramakrishnan, Nandhitha Subramanian, Jeffrey C. Moore, Mark Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Grant Murphy, Nicholas M. Marshall, Jay Russell, Keith A. Canada
  • Patent number: 10394191
    Abstract: A time-to-digital converter is provided. The time-to-digital converter comprises an oscillator controller, an invertible oscillator and a measurement circuit. The oscillator controller receives a start signal and a stop signal and outputs a mode signal. The invertible oscillator is electrically connected with the oscillator controller for receiving the mode signal. The oscillation direction of the invertible oscillator is inverted according to the mode signal, and the invertible oscillator outputs plural delay signals. The measurement circuit is electrically connected with the invertible oscillator for receiving the plural delay signals. The measurement circuit receives a sampling signal, samples the plural delay signals in accordance with the sampling signal, and outputs an output signal.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: August 27, 2019
    Assignees: DELTA ELECTRONICS INT'L (SINGAPORE) PTE LTD, NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Zhipeng Liang, Chirn Chye Boon, Xiang Yi, Jack Sheng Kee
  • Patent number: 10326480
    Abstract: The communication receiver comprises a mixer being configured to mix the communication signal with a periodic mixing signal having a mixing frequency fC to obtain a mixed communication signal, wherein the mixed communication signal comprises a first frequency spectrum portion comprising the spectral region of interest being situated around a frequency fRF+fC and a second frequency spectrum portion comprising the spectral range of interest being situated around fRF?fC; a first demodulator being configured to demodulate a first frequency channel of the plurality of frequency channels within the spectral range of interest of the first frequency spectrum portion on the basis of a first local oscillator frequency fLO1; and a second demodulator being configured to demodulate a second frequency channel of the plurality of frequency channels within the spectral region of interest of the second frequency spectrum portion on the basis of a second local oscillator frequency fLO2.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 18, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Dror Regev, Shimon Shilo, Doron Ezri, Chirn Chye Boon, Xiang Yi, Junping Zhang, Gengen Hu, Dong Liang, Sheng Liu
  • Publication number: 20190020272
    Abstract: Integrated circuits, wafer level integrated III-V power device and CMOS driver device packages, and methods for fabricating products with integrated III-V power devices and silicon-based driver devices are provided. In an embodiment, a boost converter circuit includes an inductor; a power switch having a conducting state and blocking state; and a control circuit for controlling the power switch from the conducting state to the blocking state for controlling flow of the current in the inductor, wherein the control circuit comprises a silicon integrated circuit comprising bipolar CMOS transistors, wherein when the power switch comprises a first GaN transistor, and wherein the power switch and silicon integrated circuit are electrically and mechanically coupled by way of flip chip bonding.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Inventors: Donald DISNEY, Fanyi MENG, Xiang YI, Chirn Chye BOON
  • Publication number: 20190002851
    Abstract: The present invention provides engineered T7 RNA polymerase variants and compositions thereof. These variants have been evolved for selective incorporation of the symmetrical capped GTP analog over GTP at the initiation of in vitro transcription. The present invention also provides methods for using the variants provided herein. The present invention further provides for the use of the compositions provided herein.
    Type: Application
    Filed: June 19, 2018
    Publication date: January 3, 2019
    Inventors: Mathew G. Miller, Chinping Chng, Oscar Alvizo, Melissa Ann Mayo, James Nicholas Riggins, Xiang Yi, Jonathan S. Penfield, Gjalt W. Huisman