Patents by Inventor Stephen J. Craft

Stephen J. Craft 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).

  • Optical digitizer system with position-unique photoluminescent indicia
    Patent number: 9836164
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: December 5, 2017
    Assignee: 3M Innovative Properties Company
    Inventor: Stephen J. Craft
  • OPTICAL DIGITIZER SYSTEM WITH POSITION-UNIQUE PHOTOLUMINESCENT INDICIA
    Publication number: 20150268755
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Application
    Filed: May 29, 2015
    Publication date: September 24, 2015
    Inventor: Stephen J. Craft
  • Optical digitizer system with position-unique photoluminescent indicia
    Patent number: 9075452
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 7, 2015
    Assignee: 3M Innovative Properties Company
    Inventor: Stephen J. Craft
  • Optical Digitizer System With Position-Unique Photoluminescent Indicia
    Publication number: 20140160080
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Application
    Filed: February 12, 2014
    Publication date: June 12, 2014
    Applicant: 3M Innovative Properties Company
    Inventor: Stephen J. Craft
  • OPTICAL DIGITIZER SYSTEM WITH POSITION-UNIQUE PHOTOLUMINESCENT INDICIA
    Publication number: 20140117252
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Application
    Filed: December 13, 2012
    Publication date: May 1, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Stephen J. Craft
  • Optical digitizer system with position-unique photoluminescent indicia
    Patent number: 8692212
    Abstract: A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: April 8, 2014
    Assignee: 3M Innovative Properties Company
    Inventor: Stephen J. Craft