Patents by Inventor Robert T. Krasa

Robert T. Krasa 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: 20210260806
    Abstract: Coextruded articles comprising first and second layers each having first and second opposed major surfaces and between the first and second layers a series of first walls providing a series of microchannels, and methods for making the same. Embodiment of coextruded articles described herein are useful, for example, in cushioning applications where high levels of compression are desired.
    Type: Application
    Filed: June 19, 2019
    Publication date: August 26, 2021
    Inventors: Ramasubramani Kuduva Raman Thanumoorthy, Becky A. Jetto, Dedra V. Dunevant, Ronald W. Ausen, William J. Kopecky, James J. Kobe, Robert T. Krasa
  • Patent number: 8885146
    Abstract: An exposure system includes a light source emitting a beam along an optical axis that is capable of inducing a multi-photon reaction in a resin. The exposure system further includes a resin undergoing multiphoton reaction, as well as an automated system including a monitor that measures at least one property of the beam selected from power, pulse length, shape, divergence, or position in a plane normal to the optical axis. The monitor generates at least one signal indicative of the property of the beam, and a sub-system adjusts the beam in response to the signal from the monitor.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: November 11, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
  • Publication number: 20140092372
    Abstract: An exposure system includes a light source emitting a beam along an optical axis that is capable of inducing a multi-photon reaction in a resin. The exposure system further includes a resin undergoing multiphoton reaction, as well as an automated system including a monitor that measures at least one property of the beam selected from power, pulse length, shape, divergence, or position in a plane normal to the optical axis. The monitor generates at least one signal indicative of the property of the beam, and a sub-system adjusts the beam in response to the signal from the monitor.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 3, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
  • Patent number: 8605256
    Abstract: An exposure system includes a light source emitting a beam along an optical axis that is capable of inducing a multi-photon reaction in a resin. The exposure system further includes a resin undergoing multiphoton reaction, as well as an automated system including a monitor that measures at least one property of the beam selected from power, pulse length, shape, divergence, or position in a plane normal to the optical axis. The monitor generates at least one signal indicative of the property of the beam, and a sub-system adjusts the beam in response to the signal from the monitor.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: December 10, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
  • Patent number: 8586285
    Abstract: A sheeting and a method of forming a sheeting from a master tool are described where the sheeting has a composite image that floats above or below the sheeting. The method includes providing a first sheeting comprising a first array of microlenses and a photopolymerizable first material layer adjacent to the first array of microlenses. Another step is exposing the first sheeting to a radiation source to form a master tool comprising a plurality of polymerized first structured areas in the first material layer, wherein at least some of the first structured areas include a portion shape in common with at least some of the first structured areas and wherein each first structured area is associated with one of the first array of microlenses. Yet another step is replicating the plurality of first structured areas using a substance that conforms to the plurality of structured areas to form a second material layer having a plurality of replicated structured areas.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: November 19, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Brian J. Gates, Robert T. Krasa, Travis L. Potts, Serge Wetzels
  • Patent number: 8459807
    Abstract: Techniques are described for forming microlens sheeting having composite images that appear to float with respect to the plane of the sheeting. As one example, a method comprises forming one or more images within a sheeting having a surface of microlenses, wherein at least one of the images is a partially complete image, and wherein each of the images is associated with a different one of the microlenses, wherein the microlenses have refractive surfaces that transmit light to positions within the sheeting to produce a plurality of composite images from the images formed within the sheeting so that each of the composite images appears to float with respect to the plane of the sheeting, and wherein forming the one or more images comprises forming the one or more images such that each of the composite images is associated with a different viewing angle range.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: June 11, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Sammuel D. Herbert, Charles J. Studiner, IV, Robert L. W. Smithson, Robert T. Krasa, Pingfan Wu, Douglas S. Dunn, Michael W. Dolezal
  • Patent number: 8455846
    Abstract: A method includes scanning a radiation beam with respect to a multi-photon curable photoreactive composition. The radiation beam includes a power sufficient to at least partially cure a volume of the multiphoton curable photoreactive composition. The method further includes modifying a characteristic of the radiation beam as the radiation beam is scanned.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: June 4, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Brian J. Gates, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora, Robert J. DeVoe, Dean Faklis
  • Publication number: 20130010048
    Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Inventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezai
  • Publication number: 20120019607
    Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.
    Type: Application
    Filed: September 29, 2011
    Publication date: January 26, 2012
    Inventors: Douglas S. Dunn, Robert L.W. Smithson, Robert T. Krasa, Michael W. Dolezal
  • Patent number: 8057980
    Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 15, 2011
    Inventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezal, Jeffrey M. Florczak, Stephen P. Maki, Richard M. Osgood, III
  • Publication number: 20110236651
    Abstract: Microlens sheetings with composite images are disclosed, in which the composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. Methods for providing such an imaged sheeting are also disclosed.
    Type: Application
    Filed: June 1, 2011
    Publication date: September 29, 2011
    Inventors: James P. Endle, Robert T. Krasa, William V. Dower, Michael W. Dolezal
  • Patent number: 7981499
    Abstract: Microlens sheetings with composite images are disclosed, in which the composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. Methods for providing such an imaged sheeting are also disclosed.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: July 19, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: James P. Endle, Robert T. Krasa, William V. Dower, Michael W. Dolezal
  • Publication number: 20110001950
    Abstract: An exposure system includes a light source emitting a beam along an optical axis that is capable of inducing a multi-photon reaction in a resin. The exposure system further includes a resin undergoing multiphoton reaction, as well as an automated system including a monitor that measures at least one property of the beam selected from power, pulse length, shape, divergence, or position in a plane normal to the optical axis. The monitor generates at least one signal indicative of the property of the beam, and a sub-system adjusts the beam in response to the signal from the monitor.
    Type: Application
    Filed: February 17, 2009
    Publication date: January 6, 2011
    Inventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
  • Publication number: 20100316959
    Abstract: A sheeting and a method of forming a sheeting from a master tool are described where the sheeting has a composite image that floats above or below the sheeting. The method includes providing a first sheeting comprising a first array of microlenses and a photopolymerizable first material layer adjacent to the first array of microlenses. Another step is exposing the first sheeting to a radiation source to form a master tool comprising a plurality of polymerized first structured areas in the first material layer, wherein at least some of the first structured areas include a portion shape in common with at least some of the first structured areas and wherein each first structured area is associated with one of the first array of microlenses. Yet another step is replicating the plurality of first structured areas using a substance that conforms to the plurality of structured areas to form a second material layer having a plurality of replicated structured areas.
    Type: Application
    Filed: November 10, 2008
    Publication date: December 16, 2010
    Inventors: Brian J. Gates, Robert T. Krasa, Travis L. Potts, Serge Wetzels
  • Publication number: 20100294954
    Abstract: A method includes scanning a radiation beam with respect to a multi-photon curable photoreactive composition. The radiation beam includes a power sufficient to at least partially cure a volume of the multiphoton curable photoreactive composition. The method further includes modifying a characteristic of the radiation beam as the radiation beam is scanned.
    Type: Application
    Filed: November 6, 2008
    Publication date: November 25, 2010
    Inventors: Brian J. Gates, Robert T. Krasa, Przemyslaw P. Markowicz, Crsig R. Sykora, Robert J. DeVoe, Dean Faklis
  • Publication number: 20100182666
    Abstract: Techniques are described for forming microlens sheeting having composite images that appear to float with respect to the plane of the sheeting. As one example, a method comprises forming one or more images within a sheeting having a surface of microlenses, wherein at least one of the images is a partially complete image, and wherein each of the images is associated with a different one of the microlenses, wherein the microlenses have refractive surfaces that transmit light to positions within the sheeting to produce a plurality of composite images from the images formed within the sheeting so that each of the composite images appears to float with respect to the plane of the sheeting, and wherein forming the one or more images comprises forming the one or more images such that each of the composite images is associated with a different viewing angle range.
    Type: Application
    Filed: June 17, 2008
    Publication date: July 22, 2010
    Inventors: Sammuel D. Herbert, Charles J. Studiner, IV, Robert L.W. Smithson, Robert T. Krasa, Pingfan Wu, Douglas S. Dunn, Michael W. Dolezal
  • Publication number: 20080118862
    Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.
    Type: Application
    Filed: December 20, 2007
    Publication date: May 22, 2008
    Inventors: Douglas S. Dunn, Robert L.W. Smithson, Robert T. Krasa, Michael W. Dolezal, Jeffrey M. Florczak, Robert T. Krasa, Stephen P. Maki, Richard M. Osgood
  • Patent number: 7336422
    Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: February 26, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezal
  • Patent number: 7068434
    Abstract: Microlens sheetings with composite images are disclosed, in which the composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. Methods for providing such an imaged sheeting, including by the application of radiation to a radiation sensitive material layer adjacent the microlenses, are also disclosed.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: June 27, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey M. Florczak, Robert T. Krasa, Stephen P. Maki, Richard M. Osgood, III
  • Patent number: D517610
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 21, 2006
    Assignee: 3M Innovative Properties Company
    Inventor: Robert T. Krasa