Patents by Inventor Patrick H. Marushin
Patrick H. Marushin 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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Patent number: 10197713Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.Type: GrantFiled: November 6, 2017Date of Patent: February 5, 2019Assignee: 3M Innovative Properties CompanyInventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
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Publication number: 20180059294Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.Type: ApplicationFiled: November 6, 2017Publication date: March 1, 2018Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
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Patent number: 9810817Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.Type: GrantFiled: April 1, 2009Date of Patent: November 7, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
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Publication number: 20110199697Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.Type: ApplicationFiled: April 1, 2009Publication date: August 18, 2011Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
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Publication number: 20110199557Abstract: A light directing film and an optical system incorporating same are disclosed. The light directing film includes a first major surface and a microstructured second major surface. The microstructured second major surface has at least two periodic microstructured patterns. The first periodic pattern is arranged along a first direction. The second periodic pattern is arranged along a second direction different from the first direction.Type: ApplicationFiled: April 27, 2011Publication date: August 18, 2011Inventors: Todd M. Johnson, Tetsuya Toma, Patrick H. Marushin
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Publication number: 20110181971Abstract: An approach for making a master tool used to fabricate optical films involves cutting a series of base structures. Modifying features are superimposed with the base structures, producing abruptly discontinuous variations in the shape of the base structures. Diffraction elements may be formed in one or both of the base structures and the modifying features. The modifying features can be formed by moving the cutting tool in the x-direction, in the z-direction, or along a trajectory having both an x component and a z component.Type: ApplicationFiled: April 1, 2009Publication date: July 28, 2011Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Patrick H. Marushin, Todd M. Johnson
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Patent number: 7950838Abstract: A light directing film and an optical system incorporating same are disclosed. The light directing film includes a first major surface and a microstructured second major surface. The microstructured second major surface has at least two periodic microstructured patterns. The first periodic pattern is arranged along a first direction. The second periodic pattern is arranged along a second direction different from the first direction.Type: GrantFiled: May 31, 2006Date of Patent: May 31, 2011Assignee: 3M Innovative Properties CompanyInventors: Todd M. Johnson, Tetsuya Toma, Patrick H. Marushin
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Patent number: 7385659Abstract: Color transmissive displays have historically used only backlight for forming the color image, and have not used ambient light. Usually, such a display is not used in bright sunlight, since the color image becomes washed out. Transflective color displays form an image by reflecting ambient light or by transmitting backlight, and can be used in bright sunlight. The transflector in such displays reflects the ambient light while also transmitting the backlight. The requirements on the transflector, however, are different from those used in monochromatic displays. According to the invention, a color transflective display device uses comprises a transmissive display unit having a viewing side and a back side and defining picture elements. A structured transflector is disposed to the back side of the color display unit. The structured transflector includes a structured surface and a layered dielectric reflector disposed over the structured surface.Type: GrantFiled: April 21, 2004Date of Patent: June 10, 2008Assignee: 3M Innovative Properties CompanyInventors: Keith M. Kotchick, Kenneth A. Epstein, Patrick H. Marushin, Donald J. McClure, Andrew J. Ouderkirk
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Patent number: 7339635Abstract: Pre-aligned optical layers are stacked and arranged such that an adhesive layer, which is stacked onto the optical layers, contacts at least the uppermost layer and lowermost layer. The resulting subassemblies can be assembled into an optical display without individual handling of the layers, which reduces installation time and manufacturing costs.Type: GrantFiled: January 14, 2005Date of Patent: March 4, 2008Assignee: 3M Innovative Properties CompanyInventors: Anthony J. Freking, Patrick H. Marushin, Keith M. Kotchick, Michael L. Ruegsegger
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Publication number: 20070279773Abstract: A light directing film and an optical system incorporating same are disclosed. The light directing film includes a first major surface and a microstructured second major surface. The microstructured second major surface has at least two periodic microstructured patterns. The first periodic pattern is arranged along a first direction. The second periodic pattern is arranged along a second direction different from the first direction.Type: ApplicationFiled: May 31, 2006Publication date: December 6, 2007Inventors: Todd M. Johnson, Tetsuya Toma, Patrick H. Marushin
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Patent number: 7223005Abstract: Backlighting systems are disclosed, which include a lightguide with at least one light source optically connected to an edge of the lightguide for supplying light into its interior and a reflective cavity with at least one light source optically connected to the reflective cavity for supplying light into its interior. The reflective cavity may include a first reflector and a second reflector and at least one source may be disposed at an edge of the reflective cavity. Alternatively, the reflective cavity may include a back reflector portion and light sources may be disposed at the back reflector portion.Type: GrantFiled: December 23, 2003Date of Patent: May 29, 2007Inventors: David J. Lamb, Keith M. Kotchick, Mark E. Gardiner, Mark B. O'Neill, Patrick H. Marushin, Kenneth A. Epstein, Philip E. Watson
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Patent number: 7088405Abstract: Color transmissive displays have historically used only backlight for forming the color image, and have not used ambient light. Usually, such a display is not used in bright sunlight, since the color image becomes washed out. Transflective color displays form an image by reflecting ambient light or by transmitting backlight, and can be used in bright sunlight. The transflector in such displays reflects the ambient light while also transmitting the backlight. The requirements on the transflector, however, are different from those used in monochromatic displays. According to the invention, a color transflective display device uses comprises a transmissive display unit having a viewing side and a back side and defining picture elements. A structured transflector is disposed to the back side of the color display unit. The structured transflector includes a structured surface and a layered dielectric reflector disposed over the structured surface.Type: GrantFiled: May 5, 2003Date of Patent: August 8, 2006Assignee: 3M Innovative Properties CompanyInventors: Keith M. Kotchick, Kenneth A. Epstein, Patrick H. Marushin, Donald J. McClure, Andrew J. Ouderkirk
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Publication number: 20040223099Abstract: Color transmissive displays have historically used only backlight for forming the color image, and have not used ambient light. Usually, such a display is not used in bright sunlight, since the color image becomes washed out. Transflective color displays form an image by reflecting ambient light or by transmitting backlight, and can be used in bright sunlight. The transflector in such displays reflects the ambient light while also transmitting the backlight. The requirements on the transflector, however, are different from those used in monochromatic displays. According to the invention, a color transflective display device uses comprises a transmissive display unit having a viewing side and a back side and defining picture elements. A structured transflector is disposed to the back side of the color display unit. The structured transflector includes a structured surface and a layered dielectric reflector disposed over the structured surface.Type: ApplicationFiled: May 5, 2003Publication date: November 11, 2004Inventors: Keith M. Kotchick, Kenneth A. Epstein, Patrick H. Marushin, Donald J. McClure, Andrew J. Ouderkirk
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Publication number: 20040223100Abstract: Color transmissive displays have historically used only backlight for forming the color image, and have not used ambient light. Usually, such a display is not used in bright sunlight, since the color image becomes washed out. Transflective color displays form an image by reflecting ambient light or by transmitting backlight, and can be used in bright sunlight. The transflector in such displays reflects the ambient light while also transmitting the backlight. The requirements on the transflector, however, are different from those used in monochromatic displays. According to the invention, a color transflective display device uses comprises a transmissive display unit having a viewing side and a back side and defining picture elements. A structured transflector is disposed to the back side of the color display unit. The structured transflector includes a structured surface and a layered dielectric reflector disposed over the structured surface.Type: ApplicationFiled: April 21, 2004Publication date: November 11, 2004Applicant: 3M Innovative Properties CompanyInventors: Keith M. Kotchick, Kenneth A. Epstein, Patrick H. Marushin, Donald J. McClure, Andrew J. Ouderkirk