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).
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Publication number: 20230037449Abstract: Pressure sensitive adhesive-coated 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 articles described herein are useful, for example, in cushioning applications where high levels of compression are desired.Type: ApplicationFiled: December 16, 2020Publication date: February 9, 2023Inventors: Robert T. Krasa, James J. Kobe, Becky A. Jetto, Dedra V. Dunevant, Ronald W. Ausen, William J. Kopecky, Ramasubramani Kuduva Raman Thanumoorthy
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Publication number: 20210260806Abstract: 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: ApplicationFiled: June 19, 2019Publication date: August 26, 2021Inventors: Ramasubramani Kuduva Raman Thanumoorthy, Becky A. Jetto, Dedra V. Dunevant, Ronald W. Ausen, William J. Kopecky, James J. Kobe, Robert T. Krasa
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Patent number: 8885146Abstract: 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: GrantFiled: December 9, 2013Date of Patent: November 11, 2014Assignee: 3M Innovative Properties CompanyInventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
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Publication number: 20140092372Abstract: 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: ApplicationFiled: December 9, 2013Publication date: April 3, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
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Patent number: 8605256Abstract: 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: GrantFiled: February 17, 2009Date of Patent: December 10, 2013Assignee: 3M Innovative Properties CompanyInventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
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Patent number: 8586285Abstract: 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: GrantFiled: November 10, 2008Date of Patent: November 19, 2013Assignee: 3M Innovative Properties CompanyInventors: Brian J. Gates, Robert T. Krasa, Travis L. Potts, Serge Wetzels
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Patent number: 8459807Abstract: 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: GrantFiled: June 17, 2008Date of Patent: June 11, 2013Assignee: 3M Innovative Properties CompanyInventors: Sammuel D. Herbert, Charles J. Studiner, IV, Robert L. W. Smithson, Robert T. Krasa, Pingfan Wu, Douglas S. Dunn, Michael W. Dolezal
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Patent number: 8455846Abstract: 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: GrantFiled: November 6, 2008Date of Patent: June 4, 2013Assignee: 3M Innovative Properties CompanyInventors: Brian J. Gates, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora, Robert J. DeVoe, Dean Faklis
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Publication number: 20130010048Abstract: 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: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezai
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Publication number: 20120019607Abstract: 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: ApplicationFiled: September 29, 2011Publication date: January 26, 2012Inventors: Douglas S. Dunn, Robert L.W. Smithson, Robert T. Krasa, Michael W. Dolezal
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Patent number: 8057980Abstract: 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: GrantFiled: December 20, 2007Date of Patent: November 15, 2011Inventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezal, Jeffrey M. Florczak, Stephen P. Maki, Richard M. Osgood, III
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Publication number: 20110236651Abstract: 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: ApplicationFiled: June 1, 2011Publication date: September 29, 2011Inventors: James P. Endle, Robert T. Krasa, William V. Dower, Michael W. Dolezal
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Patent number: 7981499Abstract: 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: GrantFiled: October 11, 2005Date of Patent: July 19, 2011Assignee: 3M Innovative Properties CompanyInventors: James P. Endle, Robert T. Krasa, William V. Dower, Michael W. Dolezal
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Publication number: 20110001950Abstract: 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: ApplicationFiled: February 17, 2009Publication date: January 6, 2011Inventors: Robert J. DeVoe, Brian J. Gates, Dean Faklis, Robert T. Krasa, Przemyslaw P. Markowicz, Craig R. Sykora
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Publication number: 20100316959Abstract: 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: ApplicationFiled: November 10, 2008Publication date: December 16, 2010Inventors: Brian J. Gates, Robert T. Krasa, Travis L. Potts, Serge Wetzels
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Publication number: 20100294954Abstract: 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: ApplicationFiled: November 6, 2008Publication date: November 25, 2010Inventors: Brian J. Gates, Robert T. Krasa, Przemyslaw P. Markowicz, Crsig R. Sykora, Robert J. DeVoe, Dean Faklis
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Publication number: 20100182666Abstract: 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: ApplicationFiled: June 17, 2008Publication date: July 22, 2010Inventors: Sammuel D. Herbert, Charles J. Studiner, IV, Robert L.W. Smithson, Robert T. Krasa, Pingfan Wu, Douglas S. Dunn, Michael W. Dolezal
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Publication number: 20080118862Abstract: 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: ApplicationFiled: December 20, 2007Publication date: May 22, 2008Inventors: 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
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Patent number: 7336422Abstract: 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: GrantFiled: April 6, 2006Date of Patent: February 26, 2008Assignee: 3M Innovative Properties CompanyInventors: Douglas S. Dunn, Robert L. W. Smithson, Robert T. Krasa, Michael W. Dolezal
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Patent number: 7068434Abstract: 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: GrantFiled: July 3, 2001Date of Patent: June 27, 2006Assignee: 3M Innovative Properties CompanyInventors: Jeffrey M. Florczak, Robert T. Krasa, Stephen P. Maki, Richard M. Osgood, III