Patents by Inventor Sai C. Wong

Sai C. Wong 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: 10777864
    Abstract: A networking system includes a transmitter, a waveguide and a receiver. The transmitter is configured to generate a millimeter-wave signal carrying data. The waveguide is transmissive at millimeter-wave frequencies and is configured to receive the millimeter-wave signal from the transmitter, and to guide the millimeter-wave signal from the transmitter to a downstream location by having a dielectric constant that varies over a transversal cross-section of the waveguide in accordance with a predefined profile. The receiver is configured to receive the millimeter-wave signal guided by the waveguide, and to extract the data carried by the received millimeter-wave signal.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: September 15, 2020
    Assignee: MARVELL ASIA PTE, LTD.
    Inventors: Sai-Wang Tam, Alden C. Wong
  • Publication number: 20200169444
    Abstract: A millimeter-wave communication system includes a transmitter and a receiver. The transmitter is configured to be connected to a waveguide that is transmissive at millimeter-wave frequencies, the waveguide having a propagation parameter that varies with frequency at the millimeter-wave frequencies. The transmitter is configured to generate a millimeter-wave signal comprising multiple sub-carriers that are modulated with data, wherein each sub-carrier is modulated with a respective portion of the data and is subjected to only a respective fraction of a variation in the propagation parameter, and to transmit the millimeter-wave signal into a first end of the waveguide. The receiver is configured to receive the millimeter-wave signal from a second end of the waveguide, and to extract the data from the multiple sub-carriers.
    Type: Application
    Filed: July 31, 2019
    Publication date: May 28, 2020
    Inventors: Sai-Wang Tam, Su Chenxin, Vijay Ahirwar, Rulin Huang, Alden C. Wong, Rui Cao, Sudhir Srinivasa, Alireza Razzaghi, Randy Tsang, Timothy J. Donovan
  • Publication number: 20200136726
    Abstract: A millimeter-wave communication device includes a coupler, Radio-Frequency (RF) circuitry and a composite right/left-handed metamaterial assembly. The coupler is configured to connect to a waveguide, the waveguide being transmissive at millimeter-wave frequencies and having a given dispersion characteristic over a predefined band of the millimeter-wave frequencies. The RF circuitry is configured to transmit a millimeter-wave signal into the waveguide via the coupler, or to receive a millimeter-wave signal from the waveguide via the coupler, and to process the millimeter-wave signal. The composite right/left-handed metamaterial assembly is formed to apply to the millimeter-wave signal, or to an Intermediate-Frequency (IF) signal corresponding to the millimeter-wave signal, a dispersion compensation that compensates for at least part of the dispersion characteristic of the waveguide over the predefined band.
    Type: Application
    Filed: October 6, 2019
    Publication date: April 30, 2020
    Inventors: Sai-Wang Tam, Alden C. Wong, Su Chenxin, Rulin Huang, Randy Tsang
  • Patent number: 10581478
    Abstract: Radio-frequency front-end circuitry includes an output terminal, a receive amplifier controllably coupled to the output terminal, at least one transmit amplifier controllably inductively coupled to the output terminal, and at least one impedance element controllably coupled between ground and one of the at least one transmit amplifier to reduce degradation of output of the radio-frequency front-end circuitry when the at least one transmit amplifier is not in use. In differential signaling, there is an impedance element between ground and each pole of the differential signal. A second transmit amplifier may generate second transmit signals and harmonics of the second transmit signals, and the second transmit amplifier may be switchably connected to the output of a first transmit amplifier so that output of the second transmit amplifier is filtered by the one of the first transmit amplifier. The transmit amplifiers may include a WiFi power amplifier and a BLUETOOTH® power amplifier.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 3, 2020
    Assignee: Marvell International Ltd.
    Inventors: Sai-Wang Tam, Randy Tsang, Ovidiu Carnu, Donghong Cui, Amir Ghaffari, Wai Lau, Timothy Loo, Alden C. Wong
  • Publication number: 20190312325
    Abstract: A waveguide includes a core and an electrically-conductive transmission line. The core includes an electrically-insulating material that is transmissive at millimeter-wave frequencies. The core is configured to receive a millimeter-wave signal at a first end of the waveguide, and to guide the millimeter-wave signal to a second end of the waveguide. The electrically-conductive transmission line is coupled in propinquity to the core and is configured to conduct an electrical signal between the first end of the waveguide and the second end of the waveguide, in parallel with the millimeter-wave signal guided in the core.
    Type: Application
    Filed: March 31, 2019
    Publication date: October 10, 2019
    Inventors: Vijay Ahirwar, Sai-Wang Tam, Alden C. Wong
  • Publication number: 20190252746
    Abstract: A networking system includes a transmitter, a waveguide and a receiver. The transmitter is configured to generate a millimeter-wave signal carrying data. The waveguide is transmissive at millimeter-wave frequencies and is configured to receive the millimeter-wave signal from the transmitter, and to guide the millimeter-wave signal from the transmitter to a downstream location by having a dielectric constant that varies over a transversal cross-section of the waveguide in accordance with a predefined profile. The receiver is configured to receive the millimeter-wave signal guided by the waveguide, and to extract the data carried by the received millimeter-wave signal.
    Type: Application
    Filed: March 12, 2019
    Publication date: August 15, 2019
    Inventors: Sai-Wang Tam, Alden C. Wong
  • Publication number: 20190253094
    Abstract: A networking system includes a transmitter, a waveguide and a receiver. The transmitter is configured to generate a millimeter-wave signal carrying data. The waveguide is transmissive at millimeter-wave frequencies and is configured to receive the millimeter-wave signal from the transmitter, and to guide the millimeter-wave signal from the transmitter to a downstream location by having a dielectric constant that varies over a transversal cross-section of the waveguide in accordance with a predefined profile. The receiver is configured to receive the millimeter-wave signal guided by the waveguide, and to extract the data carried by the received millimeter-wave signal.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 15, 2019
    Inventors: Sai-Wang Tam, Alden C. Wong
  • Patent number: 5498630
    Abstract: A method of controlling Take-All disease of plants by applying a fungicide of the formula ##STR1## wherein Z1 and Z2 are C and are part of an aromatic ring which is benzothiophene; andA is selected from --C(X)-amine wherein the amine is an unsubstituted, monosubstituted or disubstituted amino radical, --C(O)--SR.sub.3, --NH--C(X)R.sub.4, and --C(.dbd.NR.sub.3)--XR.sub.7 ;B is --W.sub.m --Q(R.sub.2).sub.3 or selected from O-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R.sub.4 ;Q is C, Si, Ge, or Sn;W is --C(R.sub.3).sub.p H.sub.(2-p) --; or when Q is C, W is selected from --C(R.sub.3).sub.p H(.sub.2-p), --N(R.sub.3).sub.m H(.sub.1-m)--, --S(O)p--, and --O--;X is 0 or S;n is 0, 1, 2, or 3;m is 0 or 1;p is 0, 1, or 2;each R and R.sub.2 is independently defined herein;R.sub.3 is C.sub.1 -C.sub.4 alkyl;R.sub.4 is C.sub.1 -C.sub.4 alkyl, haloalkyl, alkoxy, alkylthio, alkylamino, or dialkylamino; andR.sub.7 is C.sub.1 -C.sub.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: March 12, 1996
    Assignee: Monsanto Company
    Inventors: Dennis P. Phillion, Diane S. Braccolino, Matthew J. Graneto, Wendell G. Phillips, Karey A. Van Sant, Daniel M. Walker, Sai C. Wong
  • Patent number: 5486621
    Abstract: This invention relates to 4,5-dimethyl-N-2-propenyl-2-(trimethylsilyl)-3-thiophenecarboxamide, a method for the control of Take-All disease (Gaeumannomyces species) in plants by the use of this compound, and to fungicidal compostions for carrying out the method.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: January 23, 1996
    Assignee: Monsanto Company
    Inventors: Dennis Phillion, Sai C. Wong, Barry Shortt
  • Patent number: 5380699
    Abstract: The present invention provides novel herbicidal pyridines characterized by having in the 3- or 5-position an aliphatic or aromatic 1-ketone.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: January 10, 1995
    Assignee: Rohm and Haas Company
    Inventors: Len F. Lee, Yuen-Lung L. Sing, Sai C. Wong
  • Patent number: 5298479
    Abstract: The present invention provides novel herbicidal pyridines characterized by having in the 3- or 5-position an aliphatic or aromatic 1-ketone.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: March 29, 1994
    Assignee: Monsanto Company
    Inventors: Len F. Lee, Yuen-Lung L. Sing, Sai C. Wong
  • Patent number: 5260262
    Abstract: The present invention provides novel herbicidal pyridines characterized by having in the 3- or 5-position an aliphatic or aromatic 1-ketone.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: November 9, 1993
    Assignee: Monsanto Company
    Inventors: Len F. Lee, Yuen-Lung L. Sing, Sai C. Wong
  • Patent number: RE36562
    Abstract: A method of controlling Take-All disease of plants by applying a fungicide of the formula ##STR1## wherein Z.sub.1 and Z.sub.2 are C and are part of an aromatic ring which is .[.benzothiophene.]..Iadd.thiophene.Iaddend.; andA is .[.selected from.]. --C(X)-amine .[.wherein the amine is an unsubstituted, monosubstituted or disubstituted amino radical.]..Iadd.wherein the amine is a monosubstituted or a disubstituted amine, wherein one of the substituents has a cyclic moiety, said cyclic moiety which is chosen from the group consisting of thienyl, furanyl, and a non-heterocyclic substituent, wherein when the amine is disubstituted, the second substituent is a non-cyclic substituent.Iaddend., --C(O)--SR.sub.3, --NH--C(X)R.sub.4, .[.and.]. .Iadd.or .Iaddend.--C(.dbd.NR.sub.3)--XR.sub.7 ;B is --W.sub.m --Q(R.sub.2).sub.3 or selected from .[.O-tolyl.]..Iadd.o-tolyl.Iaddend., 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R.sub.4 ;Q is C, Si, Ge, or Sn;W is --C(R.sub.3).sub.p H.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: February 8, 2000
    Assignee: Monsanto Company
    Inventors: Dennis P. Phillion, Diane S. Braccolino, Matthew J. Graneto, Wendell G. Phillips, Karey A. Van Sant, Daniel M. Walker, Sai C. Wong