Patents by Inventor Jack Wing Lai

Jack Wing Lai 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).

  • Cure monitoring systems and methods
    Patent number: 10746660
    Abstract: Cure monitoring systems for and methods of monitoring polymerizable material to determine the degree of curing of the polymerizable material. A monitoring light source delivers visible monitoring light at one or more different visible wavelengths and a visible light detector detects the monitoring light diffusely reflected by the polymerizable material. The monitoring light has a wavelength of maximum emission (?max-mon) that does not effectively induce polymerization of the polymerizable material. Change in intensity of the monitoring light reflected from the polymerizable material is used to determine when a selected degree of curing is reached in the polymerizable material.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: August 18, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas L. Elmore, Korbinian Gerlach, Gregory A. Kobussen, Jack Wing Lai, Joel D. Oxman, Rudolf Schmid, Stefan K. Welker
  • DENTAL CURING LIGHT SYSTEMS AND METHODS
    Publication number: 20190336259
    Abstract: Dental curing light systems capable of monitoring the degree of curing of polymerizable dental material. A monitoring light source delivers visible monitoring light at one or more different visible wavelengths and a visible light detector detects the monitoring light diffusely reflected by the polymerizable dental material. The monitoring light has a wavelength of maximum emission (?max-mon) that does not effectively induce polymerization of the polymerizable dental material. Change in intensity of the monitoring light reflected from the polymerizable dental material is used to determine when a selected degree of curing is reached in the polymerizable dental material.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 7, 2019
    Inventors: Douglas L. Elmore, Korbinian Gerlach, Gregory A. Kobussen, Jack Wing Lai, Joel D. Oxman, Rudolf Schmid, Stefan K. Welker
  • CURE MONITORING SYSTEMS AND METHODS
    Publication number: 20190265167
    Abstract: Cure monitoring systems for and methods of monitoring polymerizable material to determine the degree of curing of the polymerizable material. A monitoring light source delivers visible monitoring light at one or more different visible wavelengths and a visible light detector detects the monitoring light diffusely reflected by the polymerizable material. The monitoring light has a wavelength of maximum emission (?max-mon) that does not effectively induce polymerization of the polymerizable material. Change in intensity of the monitoring light reflected from the polymerizable material is used to determine when a selected degree of curing is reached in the polymerizable material.
    Type: Application
    Filed: July 24, 2017
    Publication date: August 29, 2019
    Inventors: Douglas L. Elmore, Korbinian Gerlach, Gregory A. Kobussen, Jack Wing Lai, Joel D. Oxman, Rudolf Schmid, Stefan K. Welker