Patents by Inventor Craig Gene Stewart

Craig Gene Stewart 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).

  • Methods of separating a glass web
    Patent number: 11512016
    Abstract: Methods of separating a glass web include exposing a separation path on the glass web to a laser beam that produces thermal stress along the separation path without damaging the glass web. The methods further include redirecting a portion of the laser beam to create a defect on the separation path while the separation path is under thermal stress produced during the exposing the separation path on the glass web to the laser beam, whereupon the glass web separates along the separation path in response to creating the defect. Apparatus are further provided for separating a glass web with at least one laser beam generator that produces a laser beam to heat a separation path and a mirror configured to reflect an end portion of the laser beam to create a defect at a location of the separation path on the glass web.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 29, 2022
    Assignee: Corning Incorporated
    Inventors: Anatoli Anatolyevich Abramov, Craig Gene Stewart
  • METHODS OF SEPARATING A GLASS WEB
    Publication number: 20200087193
    Abstract: Methods of separating a glass web include exposing a separation path on the glass web to a laser beam that produces thermal stress along the separation path without damaging the glass web. The methods further include redirecting a portion of the laser beam to create a defect on the separation path while the separation path is under thermal stress produced during the exposing the separation path on the glass web to the laser beam, whereupon the glass web separates along the separation path in response to creating the defect. Apparatus are further provided for separating a glass web with at least one laser beam generator that produces a laser beam to heat a separation path and a mirror configured to reflect an end portion of the laser beam to create a defect at a location of the separation path on the glass web.
    Type: Application
    Filed: March 15, 2018
    Publication date: March 19, 2020
    Inventors: Anatoli Anatolyevich Abramov, Craig Gene Stewart
  • Methods of separating a glass web
    Patent number: 10017411
    Abstract: Methods of separating a glass web include the step (I) of exposing a path on the glass web to at least one laser beam to produce thermal stress along the path without damaging the glass web. The methods further include the step (II) of creating a defect on the path while the path is under thermal stress produced during step (I), whereupon the glass web spontaneously separates along the path in response to the defect.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: July 10, 2018
    Assignee: Corning Incorporated
    Inventors: Anatoli Anatolyevich Abramov, Craig Gene Stewart
  • METHODS OF SEPARATING A GLASS WEB
    Publication number: 20160136846
    Abstract: Methods of separating a glass web include the step (I) of exposing a path on the glass web to at least one laser beam to produce thermal stress along the path without damaging the glass web. The methods further include the step (II) of creating a defect on the path while the path is under thermal stress produced during step (I), whereupon the glass web spontaneously separates along the path in response to the defect.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 19, 2016
    Inventors: Anatoli Anatolyevich Abramov, Craig Gene Stewart