Patents by Inventor Derek W. Patzman

Derek W. Patzman 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).

  • DUAL CURE PROTECTIVE DISPLAY FILM
    Publication number: 20200028117
    Abstract: A display film includes a transparent polymeric substrate layer and a transparent energy dissipation layer disposed on the transparent polymeric substrate layer. The transparent energy dissipation layer includes cross-linked polyurethane and a polyacrylate polymer. The transparent energy dissipation layer has a glass transition temperature of 27 degrees Celsius or less and a Tan Delta peak value of 0.5 or greater.
    Type: Application
    Filed: November 30, 2017
    Publication date: January 23, 2020
    Inventors: Karissa L. ECKERT, David Scott THOMPSON, Ryan M. BRAUN, Catherine A. LEATHERDALE, Michael A. JOHNSON, Steven D. SOLOMONSON, Richard J. POKORNY, John J. STRADINGER, Kevin R. SCHAFFER, Joseph D. RULE, Peter D. CONDO, Derek W. PATZMAN
  • POLYURETHANE ACRYLATE PROTECTIVE DISPLAY FILM
    Publication number: 20190211168
    Abstract: A display film includes a transparent cross-linked polyurethane acrylate layer. The transparent cross-linked polyurethane acrylate layer having a glass transition temperature of 10 degrees Celsius or less and a Tan Delta peak value of 0.5 or greater.
    Type: Application
    Filed: June 6, 2017
    Publication date: July 11, 2019
    Inventors: David Scott THOMPSON, Steven D. SOLOMONSON, Karissa Lynn ECKERT, John James STRADINGER, Catherine A. LEATHERDALE, Peter D. CONDO, Richard J. POKORNY, Ryan M. BRAUN, Michael A. JOHNSON, Joseph D. RULE, Kevin R. SCHAFFER, Derek W. PATZMAN
  • SUBSTRATE FOR TOUCH SENSOR
    Publication number: 20190129218
    Abstract: Substrates suitable for use in a touch sensor are described. In some cases, the substrates include an inner layer and first and second heat-set polymeric outer layers. The first and second outer layers each have an in-plane birefringence of less than 0.1. The inner layer is substantially uniaxially birefringent and has an in-plane birefringence greater than 0.01. In some cases, a substrate includes a block copolymer which includes a first polyester and second polyester. The first polyester has a melting point greater than 200 ° C., and the second polyester having a melting point less than 200° C. The block copolymer includes the second polyester at 50 to 80 percent by weight. The substrate is substantially uniaxially birefringent and has an in-plane birefringence between 0.001 and 0.1.
    Type: Application
    Filed: May 15, 2017
    Publication date: May 2, 2019
    Inventors: Richard Y. Liu, Derek W. Patzman, Stephen A. Johnson
  • Multi-layer piezoelectric polymer film devices and methods
    Patent number: 9904428
    Abstract: A touch panel includes a touch sensor having a dielectric core layer disposed between first and second piezoelectric layers. Each piezoelectric layer comprises a poled piezoelectric polymer. The touch sensor further includes at least a first set of individually addressable electrodes disposed over the first piezoelectric layer and at least one second electrode disposed over the second piezoelectric layer. Circuitry is coupled to the first set of electrodes and the second electrode. The circuitry is configured to detect a change in an electrical signal of at least one electrode of the first set of electrodes referenced to the second electrode in response to a touch applied to the touch surface of the touch sensor.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 27, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Craig R. Schardt, Andrew P. Bonifas, Derek W. Patzman
  • MULTI-LAYER PIEZOELECTRIC POLYMER FILM DEVICES AND METHODS
    Publication number: 20160291729
    Abstract: A touch panel includes a touch sensor having a dielectric core layer disposed between first and second piezoelectric layers. Each piezoelectric layer comprises a poled piezoelectric polymer. The touch sensor further includes at least a first set of individually addressable electrodes disposed over the first piezoelectric layer and at least one second electrode disposed over the second piezoelectric layer. Circuitry is coupled to the first set of electrodes and the second electrode. The circuitry is configured to detect a change in an electrical signal of at least one electrode of the first set of electrodes referenced to the second electrode in response to a touch applied to the touch surface of the touch sensor.
    Type: Application
    Filed: November 18, 2014
    Publication date: October 6, 2016
    Inventors: Craig R. Schardt, Andrew P. Bonifas, Derek W. Patzman