Patents by Inventor Fan Fei

Fan Fei 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: 20230336524
    Abstract: Detection of algorithmically generated domains is disclosed. A DNS query is received. Markov Chain analysis is performed on a domain included in the received query. A determination of whether the received query implicates an algorithmically generated domain is made based at least in part on a result of the Markov Chain analysis.
    Type: Application
    Filed: June 21, 2023
    Publication date: October 19, 2023
    Inventors: Daiping Liu, Martin Walter, Ben Hua, Suquan Li, Fan Fei, Seokkyung Chung, Jun Wang, Wei Xu
  • Patent number: 11729134
    Abstract: Detection of algorithmically generated domains is disclosed. A DNS query is received. Markov Chain analysis is performed on a domain included in the received query. A determination of whether the received query implicates an algorithmically generated domain is made based at least in part on a result of the Markov Chain analysis.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 15, 2023
    Assignee: Palo Alto Networks, Inc.
    Inventors: Daiping Liu, Martin Walter, Ben Hua, Suquan Li, Fan Fei, Seokkyung Chung, Jun Wang, Wei Xu
  • Publication number: 20230234001
    Abstract: A separation membrane, suitably for oil and water separation. The membrane including a porous substrate layer and an active layer arranged over at least a part of the substrate layer. The active layer includes a hydrophilic agent and a superhydrophilic agent. Also described is a method of producing the separation membrane and a drain valve comprising the membrane.
    Type: Application
    Filed: May 26, 2021
    Publication date: July 27, 2023
    Inventors: Kangsheng LIU, Fan FEI, Tom PUGH
  • Publication number: 20230234002
    Abstract: A separation membrane, such as for pressure-assisted oil and water separation. The membrane includes a porous substrate layer and an active layer arranged over at least a part of the substrate layer. The active layer is at least partially crosslinked and comprises a superhydrophilic agent. Also described is a method of producing the separation membrane and a drain valve comprising the membrane.
    Type: Application
    Filed: May 27, 2021
    Publication date: July 27, 2023
    Inventors: Kangsheng LIU, Fan FEI, Tom PUGH
  • Patent number: 11201530
    Abstract: Disclosed herein are permanent magnetic AC machine direct-drive resonant flapper system for flapping wing micro air vehicles and flapping fin autonomous underwater vehicles.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: December 14, 2021
    Assignee: Purdue Research Foundation
    Inventors: Fan Fei, Xinyan Deng
  • Publication number: 20210266293
    Abstract: Detection of DNS tunneling traffic is disclosed. A DNS query comprising a subdomain portion and a root domain portion is received from a client device. A determination is made that the root domain portion received in the DNS query is associated with a malicious DNS tunneling root domain. A remedial action is taken in response to the determining.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 26, 2021
    Inventors: Daiping Liu, Jun Wang, Martin Walter, Fan Fei, Wei Xu
  • Publication number: 20210154742
    Abstract: Various embodiments of the present disclosure provide an additive manufacturing method. The method includes forming a first layer of a first ceramic material and forming a second layer of a second ceramic material. The method further includes contacting the first layer of the first ceramic material, the second layer of the second ceramic material, or both with a saturant. The method further includes heating the first layer of the first ceramic material, the second layer of the second ceramic material, or both to a temperature in a range of from about 50° C. to about 300° C. The method further includes applying pressure to the first layer of the first ceramic material, the second layer of the second ceramic material, or both. The pressure can be in a range of from about 10 kPa to about 800 MPa.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 27, 2021
    Inventors: Xuan Song, Fan Fei, Levi J. Kirby
  • Publication number: 20210099414
    Abstract: Detection of algorithmically generated domains is disclosed. A DNS query is received. Markov Chain analysis is performed on a domain included in the received query. A determination of whether the received query implicates an algorithmically generated domain is made based at least in part on a result of the Markov Chain analysis.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 1, 2021
    Inventors: Daiping Liu, Martin Walter, Ben Hua, Suquan Li, Fan Fei, Seokkyung Chung, Jun Wang, Wei Xu
  • Publication number: 20180342938
    Abstract: Disclosed herein are permanent magnetic AC machine direct-drive resonant flapper system for flapping wing micro air vehicles and flapping fin autonomous underwater vehicles.
    Type: Application
    Filed: May 29, 2018
    Publication date: November 29, 2018
    Applicant: Purdue Research Foundation
    Inventors: Fan Fei, Xinyan Deng
  • Patent number: 7873336
    Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: January 18, 2011
    Assignee: Agere Systems Inc.
    Inventors: Fan Fei, Ming-Ju Ho, Dukhyun Kim, Marcel Johannes Gerhardus Vriikorte
  • Patent number: 7269394
    Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: September 11, 2007
    Assignee: Agere Systems Inc.
    Inventors: Fan Fei, Ming-Ju Ho, Dukhyun Kim, Marcel Johannes Gerhardus Vrijkorte
  • Publication number: 20070173203
    Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.
    Type: Application
    Filed: March 2, 2007
    Publication date: July 26, 2007
    Inventors: Fan Fei, Ming-Ju Ho, Dukhyun Kim, Marcel Gerhardus Vriikorte
  • Publication number: 20040067741
    Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.
    Type: Application
    Filed: October 2, 2002
    Publication date: April 8, 2004
    Inventors: Fan Fei, Ming-Ju Ho, Dukhyun Kim, Marcel Johannes Gerhardus Vrijkorte