Patents by Inventor Donovan C. Karg, JR.

Donovan C. Karg, JR. 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).

  • Optical film
    Patent number: 9664834
    Abstract: An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: May 30, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ellen R. Bösl, Bert T. Chien, Carsten Franke, Shandon D. Hart, Brent A. Hedding, Donovan C. Karg, Jr., Thomas J. Ludemann, Meghan A. Bradley, Mark B. O'Neill, Jeffrey A. Peterson, Joan M. Strobel, Huiwen Tai, John F. Van Derlofske, III, Michael F. Weber, Chiu Ping Wong, Richard J. Pokorny, John P. Baetzold
  • OPTICAL FILM
    Publication number: 20110103036
    Abstract: An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.
    Type: Application
    Filed: March 30, 2009
    Publication date: May 5, 2011
    Inventors: Ellen R. Bösl, Bert T. Chien, Carsten Franke, Shandon D. Hart, Brent A. Hedding, Donovan C. Karg, JR., Thomas J. Ludemann, Meghan A. Bradley, Mark B. O'Neill, Jeffrey A. Peterson, Joan M. Strobel, Huiwen Tai, John F. Van Derlofske, III, Michael F. Weber, Chiu Ping Wong, Richard J. Pokorny, John P. Baetzold
  • FILM CALIPER CONTROL
    Publication number: 20090243133
    Abstract: A film handling apparatus including an orienter for deforming a polymeric film, a cross-web heat distribution system configured to provide a selectable distribution of heat to the film in the orienter, a measurement device configured to measure at least a portion of a cross-web caliper of the film, and an automated controller that controls the cross-web heat distribution system to adjust heat distribution in response to the measured cross-web caliper of the film. The film handling apparatus can provide for at least partial automatic control of the caliper of a film while the film is being manufactured.
    Type: Application
    Filed: February 20, 2009
    Publication date: October 1, 2009
    Inventors: Chiu P. Wong, Justin W. Wilhelm, Donovan C. Karg, JR.