Patents by Inventor Guomin Wang

Guomin Wang 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: 12258656
    Abstract: The present invention relates to a magnesium alloy material, which is an in situ magnesium hydroxide nanosheet layer modified magnesium alloy. The material is prepared from a magnesium alloy through a hydrothermal reaction under alkaline condition. The protective effect of the in situ formed magnesium hydroxide nanosheet layer structure results in remarkably enhanced corrosion resistance of the magnesium alloy, meanwhile the biocompatibility can also be significantly improved since the release rate of magnesium ion can be significantly reduced. In addition, the two-dimensional nanolayer structure has a non-releasing physical antibacterial property depending on contact. Therefore, the magnesium alloy material according to the present invention has an extremely great application prospect in the field of medical implant.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 25, 2025
    Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES
    Inventors: Guomin Wang, Huaiyu Wang, Kimho Paul Chu
  • Publication number: 20230226254
    Abstract: An antibacterial implantable medical device or medical material. The surface of an implantable medical device or medical material has a titanium coating formed thereon. Titanium nitride nanowires are formed that extend from the titanium coating at a selected angle to exert a mechanical force on bacteria bilayer membranes sufficient to at least partially disrupt the bacteria bilayer membranes. In one aspect, the titanium nitride nanowires are formed from grown titanium dioxide nanowires by converting the titanium dioxide nanowires to titanium nitride in a heated nitrogen-containing environment. The titanium nitride nanowires are optionally charged to further enhance antibacterial properties.
    Type: Application
    Filed: November 8, 2022
    Publication date: July 20, 2023
    Inventors: Guomin WANG, Paul Kim Ho CHU, Kaiwei TANG, Zheyi MENG
  • Publication number: 20220090236
    Abstract: The present invention relates to a magnesium alloy material, which is an in situ magnesium hydroxide nanosheet layer modified magnesium alloy. The material is prepared from a magnesium alloy through a hydrothermal reaction under alkaline condition. The protective effect of the in situ formed magnesium hydroxide nanosheet layer structure results in remarkably enhanced corrosion resistance of the magnesium alloy, meanwhile the biocompatibility can also be significantly improved since the release rate of magnesium ion can be significantly reduced. In addition, the two-dimensional nanolayer structure has a non-releasing physical antibacterial property depending on contact. Therefore, the magnesium alloy material according to the present invention has an extremely great application prospect in the field of medical implant.
    Type: Application
    Filed: September 30, 2019
    Publication date: March 24, 2022
    Inventors: Guomin WANG, Huaiyu WANG, Kimho Paul CHU
  • Publication number: 20210361786
    Abstract: Disclosed are a material with supercapacitance modified surface and a preparation method and application thereof. Specifically, the present disclosure introduces a material having a controllably supercapacitive surface. The surface is chargeable, the full-charged modified surface can interact with bacteria disturbing the electron transfer of respiratory chain of bacteria and inhibiting the growth and reproduction of bacteria in a short-term. The antibacterial rate can be improved by cyclically charging-discharging without losing capacitance, and prevent formation of biofilm of bacteria. The antibacterial system can quantitatively control the antibacterial process without affecting the biocompatibility of the material, and has the advantages of environmental protection and controllability.
    Type: Application
    Filed: March 1, 2019
    Publication date: November 25, 2021
    Inventors: Guomin WANG, Huaiyu WANG, Liangsheng HU, Kimho Paul CHU
  • Patent number: 9599809
    Abstract: A control system for implementing nonlinear interference compensation for a torsion angle of an astronomical telescope is provided. The system includes a torsion angle detection system and a torsion angle compensation and amendment system. The torsion angle detection system is provided with a measurement mechanism for measuring the position of a driving wheel, and a position signal of the measurement mechanism is fed back to an industrial personal computer in the torsion angle compensation and amendment system in real time. An output signal of the industrial personal computer controls a compensation motor to rotate, and the compensation motor inclines an elastic plate with the driving wheel mounted thereon through a transmission mechanism, to further cause the torsion of the driving wheel by an angle and form compensation to the torsion angle.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: March 21, 2017
    Assignee: NANJING INSTITUTE OF ASTRONOMICAL OPTICS & TECHNOLOGY, CHINESE ACADEMY OF SCIENCES
    Inventors: Shihai Yang, Guomin Wang
  • Publication number: 20150212311
    Abstract: A control system for implementing nonlinear interference compensation for a torsion angle of an astronomical telescope is provided. The system includes a torsion angle detection system and a torsion angle compensation and amendment system. The torsion angle detection system is provided with a measurement mechanism for measuring the position of a driving wheel, and a position signal of the measurement mechanism is fed back to an industrial personal computer in the torsion angle compensation and amendment system in real time. An output signal of the industrial personal computer controls a compensation motor to rotate, and the compensation motor inclines an elastic plate with the driving wheel mounted thereon through a transmission mechanism, to further cause the torsion of the driving wheel by an angle and form compensation to the torsion angle.
    Type: Application
    Filed: June 25, 2013
    Publication date: July 30, 2015
    Inventors: Shihai Yang, Guomin Wang