Patents by Inventor Edward C. Roberts

Edward C. Roberts 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).

  • Lightguide
    Patent number: 10775547
    Abstract: A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 15, 2020
    Assignee: 3M Innovation Properties Company
    Inventors: Robert M. Emmons, David A. Rosen, Nicholas A. Johnson, Gary T. Boyd, Trevor W. Stolber, Owen M. Anderson, Graham M. Clarke, Sherie A. Kristie, Edward C. Roberts, Kristy A. Gillette
  • LIGHTGUIDE
    Publication number: 20200103578
    Abstract: A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.
    Type: Application
    Filed: March 12, 2018
    Publication date: April 2, 2020
    Inventors: Robert M. Emmons, David A. Rosen, Nicholas A. Johnson, Gary T. Boyd, Trevor W. Stolber, Owen M. Anderson, Graham M. Clarke, Sherie A. Kristie, Edward C. Roberts, Kristy A. Gillette
  • Ankle brace
    Patent number: D944405
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: February 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas A. Lee, Dale R. Wiehe, Kevin R. Wruble, Yin C. Quintero, Dominic J. Julian, Tanya L. Beckwith, Edward C. Roberts