Patents by Inventor Duane M. Hart

Duane M. Hart 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).

  • Concentrating solar mirror panel assembly with corrugated stiffener
    Patent number: 9184321
    Abstract: A concentrating solar mirror panel assembly having a reflective sheet with a reflective major surface and an opposing major surface and a corrugated stiffener having ridges and troughs each having an outer surface with land areas, wherein the land areas of at least a portion of the ridges are joined to at least a portion of the opposing major surface of the reflective sheet. The concentrating solar mirror panel assembly is non-planar and substantially rigid. The concentrating solar mirror panel assembly is assembled such that a desired non-planar shape is maintained: either using a locking sheet or having the corrugated stiffener attached so that its principal axes of corrugation are substantially perpendicular to the axis of curvature of the assembly. Methods of making the concentrating solar mirror panel assembly are also disclosed. Concentrated solar power systems and solar collection devices are also disclosed.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: November 10, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Attila Molnar, Duane M. Hart, Dylan T. Cosgrove, Scott E. Simons
  • CONCENTRATING SOLAR MIRROR PANEL ASSEMBLY WITH CORRUGATED STIFFENER
    Publication number: 20120160324
    Abstract: A concentrating solar mirror panel assembly having a reflective sheet with a reflective major surface and an opposing major surface and a corrugated stiffener having ridges and troughs each having an outer surface with land areas, wherein the land areas of at least a portion of the ridges are joined to at least a portion of the opposing major surface of the reflective sheet. The concentrating solar mirror panel assembly is non-planar and substantially rigid. The concentrating solar mirror panel assembly is assembled such that a desired non-planar shape is maintained: either using a locking sheet or having the corrugated stiffener attached so that its principal axes of corrugation are substantially perpendicular to the axis of curvature of the assembly. Methods of making the concentrating solar mirror panel assembly are also disclosed. Concentrated solar power systems and solar collection devices are also disclosed.
    Type: Application
    Filed: September 1, 2010
    Publication date: June 28, 2012
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Attila Molnar, Duane M. Hart, Dylan T. Cosgrove, Scott E. Simons
  • POLYMERIC COMPOSITE ARTICLE AND METHOD OF MAKING THE SAME
    Publication number: 20100196671
    Abstract: Article comprising a monolithic ceramic layer and a polymeric composite layer and method of making is described. The article may be useful, for example, as armor.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 5, 2010
    Inventors: James P. Sorensen, Timothy J. Gennrich, Duane M. Hart