Patents by Inventor Roger E. Luehrs

Roger E. Luehrs 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).

  • Cube corner cavity based retroreflectors with transparent fill material
    Patent number: 8596799
    Abstract: Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: December 3, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth L. Smith, Gerald M. Benson, Michele A. Craton, Michael P. Daniels, Roger E. Luehrs
  • CUBE CORNER CAVITY BASED RETROREFLECTORS WITH TRANSPARENT FILL MATERIAL
    Publication number: 20090169823
    Abstract: Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.
    Type: Application
    Filed: March 10, 2009
    Publication date: July 2, 2009
    Inventors: Kenneth L. Smith, Gerald M. Benson, Michele A. Craton, Michael P. Daniels, Roger E. Luehrs
  • Cube corner cavity based retroreflectors with transparent fill material
    Patent number: 7182829
    Abstract: Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: February 27, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth L. Smith, Gerald M. Benson, Michele A. Craton, Michael P. Daniels, Roger E. Luehrs
  • Cube corner cavity based retroreflectors with transparent fill material
    Publication number: 20010033907
    Abstract: Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.
    Type: Application
    Filed: May 30, 2001
    Publication date: October 25, 2001
    Applicant: 3M Innovative Properties Company
    Inventors: Kenneth L. Smith, Gerald M. Benson, James C. Coderre, Cheryl M. Frey, Bruce B. Wilson, Michele A. Craton, Michael P. Daniels, Roger E. Luehrs
  • Cube corner cavity based retroeflectors with transparent fill material
    Patent number: 6280822
    Abstract: Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: August 28, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth L. Smith, Gerald M. Benson, James C. Coderre, Cheryl M. Frey, Bruce B. Wilson, Michele A. Craton, Michael P. Daniels, Roger E. Luehrs