Patents by Inventor Mark W. Leverty

Mark W. Leverty 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).

  • Publication number: 20200319384
    Abstract: The present disclosure generally relates to retroreflective sheeting including a topcoat and to methods of making such sheeting. In some embodiments, the retroreflective sheeting includes (1) a first major surface that is a structured surface having a structure imparted by a plurality of prismatic cube corner elements; (2) a second major surface opposite the first major surface, the second major surface being substantially planar and including a polycarbonate; and (3) a topcoat adjacent to at least a portion of the second major surface and the topcoat including a solvent-based composition.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Lee A. PAVELKA, David W. MEITZ, Joseph A. RICHIE, Thomas V. KUSILEK, Mark W. LEVERTY
  • Publication number: 20160370514
    Abstract: The present disclosure generally relates to retroreflective sheeting including a topcoat and to methods of making such sheeting. In some embodiments, the retroreflective sheeting includes (1) a first major surface that is a structured surface having a structure imparted by a plurality of prismatic cube corner elements; (2) a second major surface opposite the first major surface, the second major surface being substantially planar and including a polycarbonate; and (3) a topcoat adjacent to at least a portion of the second major surface and the topcoat including a solvent-based composition.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 22, 2016
    Inventors: Lee A. Pavelka, David W. Meitz, Joseph A. Richie, Thomas V. Kusilek, Mark W. Leverty
  • Patent number: 7964269
    Abstract: Retroreflective sheeting articles comprising a colorless thermal mass transferred image, methods of thermal mass transfer printing substrate such as polymeric films with a colorless thermal mass transferable composition, and thermal mass transfer ribbon articles comprising a colorless thermal mass transferable composition are described. The thermal mass transfer composition comprises a homogeneous unreactive thermoplastic composition comprising at least one acrylic resin and less than 3 wt-% of components that are opaque at ambient temperature.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: June 21, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Jennifer L. Lee, Mark W. Leverty, Scott A. Boyd, Eugene H. Carlson, Lisa Flatt Nelson
  • Patent number: 7727617
    Abstract: Retroreflective sheeting is described comprising a viewing surface and a non-viewing surface and a thermal mass transferred image disposed in the optical path of the viewing surface wherein the thermal mass transferred image comprises a homogeneous unreactive thermoplastic composition. In one embodiment, the unreactive thermoplastic composition comprises at least one acrylic resin and at least one colorant, wherein the composition has less than 3 wt-% of components that are opaque at ambient temperature. The percent maximum diffuse luminous transmittance to total luminous transmittance of the composition is less than 50%.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: June 1, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Jennifer L. Lee, Mark W. Leverty, Scott A. Boyd, Eugene H. Carlson, Lisa Flatt Nelson
  • Publication number: 20080118638
    Abstract: Retroreflective sheeting articles comprising a colorless thermal mass transferred image, methods of thermal mass transfer printing substrate such as polymeric films with a colorless thermal mass transferable composition, and thermal mass transfer ribbon articles comprising a colorless thermal mass transferable composition are described. The thermal mass transfer composition comprises a homogeneous unreactive thermoplastic composition comprising at least one acrylic resin and less than 3 wt-% of components that are opaque at ambient temperature.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 22, 2008
    Inventors: Jennifer L. Lee, Mark W. Leverty, Scott A. Boyd, Eugene H. Carlson, Lisa Flatt Nelson