Patents by Inventor Nelson Yan

Nelson Yan 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).

  • Delay coating for wellbore isolation device
    Patent number: 11448033
    Abstract: A wellbore isolation device includes a mandrel, a sealing element disposed around at least a portion of the mandrel, and a delay coating disposed on at least a portion of an outer surface of the sealing element. The sealing element includes a swellable material and the delay coating covers a cross-linked polymer. The delay coating is configured to swell or degrade in a wellbore fluid.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: September 20, 2022
    Assignees: HALLIBURTON ENERGY SERVICES, INC., BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Michael Linley Fripp, Xiaoguang Allan Zhong, Kejia Yang, Walter Voit, Nelson Yan Loo Lee, Yong Dai Tan, Bing Hong Chee, Ee Wen Wong
  • DELAY COATING FOR WELLBORE ISOLATION DEVICE
    Publication number: 20210156220
    Abstract: A wellbore isolation device includes a mandrel, a sealing element disposed around at least a portion of the mandrel, and a delay coating disposed on at least a portion of an outer surface of the sealing element. The sealing element includes a swellable material and the delay coating covers a cross-linked polymer. The delay coating is configured to swell or degrade in a wellbore fluid.
    Type: Application
    Filed: April 5, 2019
    Publication date: May 27, 2021
    Inventors: Michael Linley FRIPP, Xiaoguang Allan ZHONG, Kejia YANG, Walter VOIT, Nelson Yan Loo LEE, Yong Dai TAN, Bing Hong CHEE, Ee Wen WONG
  • Blanket with sleeves, inside foot pockets and open back
    Patent number: D912931
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 16, 2021
    Inventor: Nelson Yan
  • Woman's poncho with front pockets and hood
    Patent number: D912941
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 16, 2021
    Inventor: Nelson Yan
  • Blanket sweatshirt with neck warmer
    Patent number: D914330
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: March 30, 2021
    Inventor: Nelson Yan
  • Wearable poncho with neck warmer
    Patent number: D914331
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 30, 2021
    Inventor: Nelson Yan
  • Ventilated two-sided pet carrier backpack
    Patent number: D923326
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: June 29, 2021
    Inventor: Nelson Yan
  • Ventilated pet carrier backpack
    Patent number: D961910
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 30, 2022
    Inventor: Nelson Yan
  • Upper body outer garment with two front side pockets
    Patent number: D965958
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: October 11, 2022
    Assignee: Caravan Group, LLC
    Inventor: Nelson Yan
  • Upper body outer garment with one front pocket
    Patent number: D990099
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: June 27, 2023
    Assignee: CARAVAN GROUP, LLC
    Inventor: Nelson Yan