Patents by Inventor Ka M. Cheang

Ka M. Cheang 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: 11819377
    Abstract: Methods for obtaining an adjusted 3D model of patient's teeth based on a 2D image of the patient's teeth. In some examples, the method includes: obtaining a 3D digital model based on a scan of the patient's teeth; obtaining a 2D image based on a camera picture; iteratively comparing a distance between corresponding points on one or more teeth of the 3D digital model and of the 2D image, and generating an adjusted 3D model in which the one or more teeth of the 3D digital model are moved to reduce said distance, wherein iteratively comparing and generating comprises iterating until one or more deviations between the teeth of the 3D digital model and the 2D image are below a threshold.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: November 21, 2023
    Assignee: Align Technology, Inc.
    Inventors: Ian Kitching, Ka M. Cheang
  • Publication number: 20230157789
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 25, 2023
    Inventors: Ian KITCHING, Ka M. CHEANG
  • Publication number: 20200237477
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Inventors: Ian Kitching, Ka M. Cheang
  • Patent number: 10624716
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 21, 2020
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Ian Kitching, Ka M. Cheang
  • Patent number: 9364297
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: June 14, 2016
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Ian Kitching, Ka M. Cheang
  • Publication number: 20160074138
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Inventors: Ian Kitching, Ka M. Cheang
  • Publication number: 20140193765
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 10, 2014
    Applicant: Align Technology, Inc.
    Inventors: Ian Kitching, Ka M. Cheang
  • Publication number: 20120225401
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: November 10, 2011
    Publication date: September 6, 2012
    Applicant: Align Technology, Inc.
    Inventors: Ian Kitching, Ka M. Cheang
  • Patent number: 8075306
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: December 13, 2011
    Assignee: Align Technology, Inc.
    Inventors: Ian Kitching, Ka M. Cheang
  • Publication number: 20080305451
    Abstract: Method and system for detecting and correcting deviation during an orthodontic treatment plan is provided. The method includes the steps of receiving an un-segmented current teeth image representing a patient's teeth after an orthodontic treatment plan has begun and before the plan ends for the patient; matching a previously segmented teeth model with the current teeth image; and generating at least one corrective stage to define an intermediate tooth arrangement, wherein the at least one corrective stage repositions a digital teeth image so that a prescribed tooth arrangement of the previously segmented teeth model can be used.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 11, 2008
    Inventors: Ian Kitching, Ka M. Cheang