Patents by Inventor Fred J. Roska

Fred J. Roska 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).

  • Patent number: 10455675
    Abstract: A looped pile static reduction blanket or cloth, an apparatus including the looped pile static reduction blanket, and a technique to neutralize static and static patterns from a polymeric film surface during processing, to enable higher speeds and fewer defects during web transport and subsequent processing of wound film rolls, an apparatus including the looped pile static reduction cloth, and a technique to neutralize static from a polymeric shaped part during processing, to enable fewer defects. The looped pile static reduction blanket includes a static reduction engagement cloth that is resilient and can facilitate discharge of static from a web to ground before, during, and after contact with a charged web.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: October 22, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Joshua M. Retterath, Bruce E. Tait, Chris J. Tanley, Fred J. Roska, Terence A. Lee, Kevin B. Newhouse
  • Patent number: 9908733
    Abstract: The present disclosure describes a looped pile static reduction roller (100, 200, 300), an apparatus (400) including the looped pile static reduction roller, and a technique to neutralize static and static patterns from a polymeric film surface during processing, to enable higher speeds and fewer defects during web transport. The looped pile static reduction roller includes a static reduction engagement cover (160, 260, 360) that is resilient and can facilitate discharge of static from the web to ground before, during, and after contact with a charged web (320, 420).
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: March 6, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Fred J. Roska, Chris J. Tanley, Kevin B. Newhouse, Bruce E. Tait
  • Publication number: 20170150588
    Abstract: The present disclosure describes a looped pile static reduction blanket or cloth, an apparatus including the looped pile static reduction blanket, and a technique to neutralize static and static patterns from a polymeric film surface during processing, to enable higher speeds and fewer defects during web transport and subsequent processing of wound film rolls, an apparatus including the looped pile static reduction cloth, and a technique to neutralize static from a polymeric shaped part during processing, to enable fewer defects. The looped pile static reduction blanket includes a static reduction engagement fabric that is resilient and can facilitate discharge of static from a web to ground before, during, and after contact with a charged web.
    Type: Application
    Filed: December 18, 2014
    Publication date: May 25, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joshua M. Retterath, Bruce E. Tait, Chris J. Tanley, Fred J. Roska, Terence A. Lee, Kevin B. Newhouse
  • Publication number: 20160185549
    Abstract: The present disclosure describes a looped pile static reduction roller (100, 200, 300), an apparatus (400) including the looped pile static reduction roller, and a technique to neutralize static and static patterns from a polymeric film surface during processing, to enable higher speeds and fewer defects during web transport. The looped pile static reduction roller includes a static reduction engagement cover (160, 260, 360) that is resilient and can facilitate discharge of static from the web to ground before, during, and after contact with a charged web (320, 420).
    Type: Application
    Filed: December 17, 2013
    Publication date: June 30, 2016
    Inventors: Fred J. Roska, Chris J. Tanley, Kevin B. Newhouse, Bruce E. Tait
  • Publication number: 20140341699
    Abstract: Vacuum effectors comprising: (a) a wall defining an enclosed opening and having a rim defining a lip plane; (b) a negative pressure source; (c) a shroud covering the rim; and (d) optionally a permeable support member spanning the enclosed opening, the support member being substantially planar and recessed a selected depth from the lip plane. Also, methods of manipulating work pieces using such vacuum effectors.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 20, 2014
    Inventors: Waldo L. Lopez, Bruce E. Tait, Fred J. Roska, Kevin B. Newhouse
  • Patent number: 7405784
    Abstract: An optical stack includes a first liquid crystal layer and a j-retarder disposed on the liquid crystal layer. The j-retarder includes a simultaneous biaxally stretched polymeric film being substantially non-absorbing and non-scattering for at least one polarization state of visible light. The j-retarder has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: July 29, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Fred J. Roska, Richard C. Allen, Matthew B. Johnson, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, Gregory E. Gilligan
  • Patent number: 7132065
    Abstract: A process for making an optical film includes stretching a polyolefin film in a first direction and stretching the polyolefin film in a second direction different than the first direction forming a biaxially stretched polyolefin film. At least a portion of the stretching of the polyolefin film in the second direction occurs simultaneous with the stretching of the polyolefin film in the first direction. The biaxially stretched polyolefin film has a length and a width and substantially non-absorbing and non-scattering for at least one polarization state of visible light. The biaxially stretched polyolefin film has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: November 7, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Richard C. Allen, Matthew B. Johnson, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, John M. Klaeser, Sebastian F. Zehentmaier
  • Patent number: 7110072
    Abstract: An optical stack includes a first liquid crystal layer and a j-retarder disposed on the liquid crystal layer. The j-retarder includes a simultaneous biaxially stretched polymeric film being substantially non-absorbing and non-scattering for at least one polarization state of visible light. The j-retarder has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an absolute value for an out-of-plane retardance being 55 nm or greater.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: September 19, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Fred J. Roska, Richard C. Allen, Matthew B. Johnson, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, Gregory E. Gilligan
  • Patent number: 7099083
    Abstract: An optical film includes a layer of simultaneous biaxially stretched polyolefin film that is substantially non-absorbing and non-scattering for at least one polarization state of visible light. The layer has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal. The layer has an in-plane retardance of 100 nm or less and an absolute value of an out-of-plane retardance being 55 nm or greater.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: August 29, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew B. Johnson, Richard C. Allen, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer
  • Patent number: 7037461
    Abstract: A method of stretching films in which all or a portion of the width of the film is cooled during or just after stretching so as to improve the uniformity of the film. The includes stretching a polymeric film in a tenter that grasps the film with a plurality of clips along the opposing edges of the film and propels the clips to thereby stretch the film. The tenter includes driven clips and idler clips, with at least one idler clip between respective pairs of driven clips. The cooling is done so as to improve the uniformity of the clip spacing relative to the spacing obtained at otherwise identical process conditions without such cooling.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: May 2, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Martin E. Denker, Joseph T. Bartusiak, Anthony B. Ferguson, Thomas P. Hanschen, Jeffery N. Jackson, William Ward Merrill, Susan J. Newhouse, Fred J. Roska, Richard J. Thompson, Chiu Ping Wong
  • Patent number: 6965474
    Abstract: An optical film includes a layer of simultaneous biaxially stretched polyolefin film that is substantially non-absorbing and non-scattering for at least one polarization state of visible light. The layer has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal. The layer has an in-plane retardance of 100 nm or less and an out-of-plane retardance of 50 nm or greater.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: November 15, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew B. Johnson, Richard C. Allen, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer
  • Publication number: 20040265575
    Abstract: A simultaneously biaxially stretched polypropylene film having unique properties is disclosed. The properties result from the unique method of making the film and include: a tensile elongation to break in the first stretch direction of at least 110%; a tensile volumetric energy to break in the first stretch direction of at least 18,000 in-lb/in3; and, a variability in film thickness along the first stretch direction, as measured by the standard deviation relative to the average, of less than 10%.
    Type: Application
    Filed: July 26, 2004
    Publication date: December 30, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Chiu Ping Wong, Thomas P. Hanschen, Anthony B. Ferguson, William W. Merrill, Fred J. Roska, Jeffery N. Jackson
  • Publication number: 20040183973
    Abstract: An optical stack includes a first liquid crystal layer and a j-retarder disposed on the liquid crystal layer. The j-retarder includes a simultaneous biaxially stretched polymeric film being substantially non-absorbing and non-scattering for at least one polarization state of visible light. The j-retarder has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an absolute value for an out-of-plane retardance being 55 nm or greater.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Fred J. Roska, Richard C. Allen, Matthew B. Johnson, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, Gregory E. Gilligan
  • Publication number: 20040184150
    Abstract: An optical film includes a layer of simultaneous biaxially stretched polyolefin film that is substantially non-absorbing and non-scattering for at least one polarization state of visible light. The layer has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal. The layer has an in-plane retardance of 100 nm or less and an absolute value of an out-of-plane retardance being 55 nm or greater.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Matthew B. Johnson, Richard C. Allen, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer
  • Publication number: 20040155372
    Abstract: A process for making an optical film includes stretching a polyolefin film in a first direction and stretching the polyolefin film in a second direction different than the first direction forming a biaxially stretched polyolefin film. At least a portion of the stretching of the polyolefin film in the second direction occurs simultaneous with the stretching of the polyolefin film in the first direction. The biaxially stretched polyolefin film has a length and a width and substantially non-absorbing and non-scattering for at least one polarization state of visible light. The biaxially stretched polyolefin film has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Richard C. Allen, Matthew B. Johnson, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, John M. Klaeser, Sebastian F. Zehentmaier
  • Publication number: 20040156000
    Abstract: An optical stack includes a first liquid crystal layer and a j-retarder disposed on the liquid crystal layer. The j-retarder includes a simultaneous biaxally stretched polymeric film being substantially non-absorbing and non-scattering for at least one polarization state of visible light. The j-retarder has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Fred J. Roska, Richard C. Allen, Matthew B. Johnson, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, Gregory E. Gilligan
  • Publication number: 20040156106
    Abstract: An optical film includes a layer of simultaneous biaxially stretched polyolefin film that is substantially non-absorbing and non-scattering for at least one polarization state of visible light. The layer has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal. The layer has an in-plane retardance of 100 nm or less and an out-of-plane retardance of 50 nm or greater.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Richard C. Allen, Matthew B. Johnson, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer
  • Publication number: 20020098372
    Abstract: A method of biaxially stretching a polymeric film along an overbias stretch profile. The method comprises the steps of: ) imparting a sufficiently high temperature to the film to allow a significant amount of biaxial stretch; and b) biaxial tenter stretching the film to a final first direction stretch parameter and a final second direction stretch parameter, wherein at least 75% of the final first direction stretch parameter is attained before no more than 50% of the final second direction stretch parameter is attained, and wherein the final first direction stretch parameter is no greater than the final second direction stretch parameter.
    Type: Application
    Filed: January 17, 2002
    Publication date: July 25, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Chiu Ping Wong, Thomas P. Hanschen, Anthony B. Ferguson, William W. Merrill, Fred J. Roska, Jeffery N. Jackson
  • Patent number: 6358457
    Abstract: A method of biaxially stretching a polymeric film along an overbias stretch profile having the steps of (a) imparting a sufficiently high temperature to the film to allow a significant amount of biaxial stretch; and (b) biaxial tenter stretching the film to a final first direction stretch parameter and a final second direction stretch parameter, wherein at least 75% of the final first direction stretch parameter is attained before no more than 50% of the final second direction stretch parameter is attained, and wherein the final first direction stretch parameter is no greater than the final second direction stretch parameter.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: March 19, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Chiu Ping Wong, Thomas P. Hanschen, Anthony B. Ferguson, William W. Merrill, Fred J. Roska, Jeffery N. Jackson
  • Patent number: 6303067
    Abstract: A method of biaxially stretching a polymeric film according to an overbias or overstretch stretch profile to a final first direction stretch parameter and a final second direction stretch parameter to provide a film having uniform properties. First, a sufficiently high temperature is imparted to the film to allow a significant amount of biaxial stretch. The film is then biaxially tenter stretched to a peak first direction stretch parameter that is at least 1.3 times the final first direction stretch parameter wherein the final first direction stretch parameter is no larger than the final second direction stretch parameter. Finally, the film is retracted in the first direction from the peak first direction stretch parameter to the final first direction stretch parameter to produce a film having uniformity of properties in the first direction.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: October 16, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Chiu Ping Wong, Thomas P. Hanschen, Anthony B. Ferguson, William W. Merrill, Fred J. Roska, Jeffery N. Jackson