Patents by Inventor Libao Wu

Libao Wu 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).

  • Method of preparing malononitrile oxime ether compound and intermediate compound
    Patent number: 11952355
    Abstract: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound, and a dehydrant to a dehydration reaction in the present of a second solvent to obtain the malononitrile oxime ether compound. Furthermore, the malononitrile oxime ether compound is obtained through one-step dehydration reaction. using the preparation method, is advantageous for improving the yield of malononitrile oxime ethers and reducing the cost.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: April 9, 2024
    Assignee: Shenyang Sinochem Agrochemicals R&D Co., Ltd.
    Inventors: Hongfei Wu, Xueming Cheng, Libao Xu, Chunxiao Guo, Jingbo Xu, Ningning Sun, Haibo Yu
  • Video camera system
    Patent number: D849086
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: May 21, 2019
    Assignee: Logitech Europe S.A.
    Inventors: Giuseppe Russo, Libao Wu, Alan Smith, Ram Chaturabul
  • Presenter device
    Patent number: D856332
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: August 13, 2019
    Assignee: Logitech Europe S.A.
    Inventors: Martin Caspar Rüegg, Marten Helwig, Libao Wu, Olivier Gregoire, Jasper Phua, Padraig Mcloughlin, Fleming Chao
  • Presenter device
    Patent number: D856333
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: August 13, 2019
    Assignee: Logitech Europe S.A.
    Inventors: Martin Caspar Rüegg, Marten Helwig, Libao Wu, Olivier Gregoire, Jasper Phua, Padraig Mcloughlin, Fleming Chao
  • Presenter device
    Patent number: D873270
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: January 21, 2020
    Assignee: Logitech Europe S.A.
    Inventors: Martin Casper Rüegg, Marten Helwig, Libao Wu, Olivier Gregoire, Jasper Phua, Padraig Mcloughlin, Fleming Chao
  • Presenter device
    Patent number: D875731
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 18, 2020
    Assignee: Logitech Europe S.A.
    Inventors: Martin Caspar Rüegg, Marten Helwig, Libao Wu, Olivier Gregoire, Jasper Phua, Padraig Mcloughlin, Fleming Chao
  • Keyboard
    Patent number: D900101
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: October 27, 2020
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Matthew Pugmire, William Carey, Mark Starrett, Ram Chaturabul, Seter Libao Wu
  • Headset
    Patent number: D955365
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: June 21, 2022
    Assignee: Logitech Europe S.A.
    Inventors: Matthew Pugmire, Libao Wu
  • Computer mouse
    Patent number: D956048
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: June 28, 2022
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Tony Mankit Kan, Ram Chaturabul, Libao Wu, Gavin James McGlynn, Gireg Emmanuel Mickaël Jappé
  • Headset
    Patent number: D973626
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: December 27, 2022
    Assignee: Logitech Europe S.A.
    Inventors: Libao Wu, Tony Mankit Kan, Ingve Holmung, Yu-Jing Huang, Chih-Hung Jen
  • Headset
    Patent number: D973628
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: December 27, 2022
    Assignee: Logitech Europe S.A.
    Inventors: Matthew Pugmire, Libao Wu
  • Computer mouse
    Patent number: D993249
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: July 25, 2023
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Tony Mankit Kan, Ram Chaturabul, Libao Wu, Gavin James McGlynn, Gireg Emmanuel Mickaël Jappé
  • Computer mouse
    Patent number: D1002618
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: October 24, 2023
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Ram Chaturabul, Libao Wu, Jules Moretti, David Day, Nicolas Metral, Noirin Curran
  • Headset
    Patent number: D1007461
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: December 12, 2023
    Assignee: Logitech Europe S.A.
    Inventors: Matthew Pugmire, Libao Wu, Tony Mankit Kan
  • Computer mouse
    Patent number: D1012083
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: January 23, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Ram Chaturabul, Libao Wu, Jules Moretti, David Day, Nicolas Metral, Noirin Curran
  • Computer mouse
    Patent number: D1012085
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: January 23, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Tony Mankit Kan, Ram Chaturabul, Libao Wu, Gavin James McGlynn, Gireg Emmanuel Mickaël Jappé
  • Headset
    Patent number: D1025009
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: April 30, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Eric Fields, Libao Wu, Alejandro David Alvarez, Tania Alvarez Moreno
  • Headphone
    Patent number: D1027903
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 21, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Grace Hina Lee, Gaurav Bradoo, Matthew Malone, Libao Wu, Osagie Igbeare
  • Headphone
    Patent number: D1027905
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 21, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Grace Hina Lee, Gaurav Bradoo, Matthew Malone, Libao Wu, Osagie Igbeare
  • Computer mouse
    Patent number: D1027953
    Type: Grant
    Filed: October 5, 2023
    Date of Patent: May 21, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Maxime Dubreucq, Ram Chaturabul, Libao Wu, Jules Moretti, David Day, Nicolas Metral, Noirin Curran