Patents by Inventor Weihong YI

Weihong 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).

  • Low-emission hot-in-place asphalt recycling equipment train system
    Patent number: 11674272
    Abstract: A low-emission hot-in-place asphalt recycling equipment train system is disclosed, which comprises at least three heating units, a milling unit, a centralized hot mix heating unit, a mixing unit, and compatible paving and compacting units. The hot-in-place asphalt recycling equipment train system realizes stepwise uniform heating of pavements, recycling of heat energy, centralized treatment and discharge of fumes, centralized and uniform hot mix heating of materials without causing damage, simultaneous metering and feeding of required materials at multiple points, and on-site mobile batch mixing.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: June 13, 2023
    Assignee: WTD HEAT TECHNOLOGY LTD.
    Inventor: Weihong Yi
  • LOW-EMISSION HOT-IN-PLACE ASPHALT RECYCLING EQUIPMENT TRAIN SYSTEM
    Publication number: 20220333316
    Abstract: The invention relates to a low-emission hot-in-place asphalt recycling equipment train system, which comprises at least three heating units, a milling unit, a centralized hot mix heating unit, a mixing unit, and compatible paving and compacting units. The hot-in-place asphalt recycling equipment train system realizes stepwise uniform heating of pavements, recycling of heat energy, centralized treatment and discharge of fumes, centralized and uniform hot mix heating of materials without causing damage, simultaneous metering and feeding of required materials at multiple points, and on-site mobile batch mixing.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 20, 2022
    Inventor: Weihong YI
  • Non-petroleum based rejuvenating agent
    Patent number: 11339293
    Abstract: The invention provides a non-petroleum based rejuvenating agent to improve the performance of the recycled asphalt, and accordingly extend the service life of the recycled pavement.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 24, 2022
    Inventors: Weihong Yi, Yi Xin Li
  • NON-PETROLEUM BASED REJUVENATING AGENT
    Publication number: 20200407560
    Abstract: The invention provides a non-petroleum based rejuvenating agent to improve the performance of the recycled asphalt, and accordingly extend the service life of the recycled pavement.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 31, 2020
    Inventors: Weihong YI, Yi Xin Li