Patents by Inventor Stephen J Dreyer

Stephen J Dreyer 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: 10197713
    Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: February 5, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
  • Publication number: 20180059294
    Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
    Type: Application
    Filed: November 6, 2017
    Publication date: March 1, 2018
    Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
  • Patent number: 9810817
    Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: November 7, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
  • Publication number: 20110199697
    Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
    Type: Application
    Filed: April 1, 2009
    Publication date: August 18, 2011
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
  • Patent number: 7716999
    Abstract: Test method for determining (e.g. prism) microstructure deformation of a microstructured (e.g. brightness enhancing) film are described.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: May 18, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Adam H. Hesselroth, Stephen J Dreyer, Mark R. Dupre
  • Publication number: 20090107261
    Abstract: Test method for determining (e.g. prism) microstructure deformation of a microstructured (e.g. brightness enhancing) film are described.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 30, 2009
    Inventors: Adam H. Hesselroth, Stephen J. Dreyer, Mark R. Dupre