Patents by Inventor Mitchell A. F. Johnson

Mitchell A. F. Johnson 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: 20190094418
    Abstract: Optical films for redirecting light are described, and optical systems, such as display systems, incorporating such optical films are described. The optical film may include a first structured surface including a plurality of prismatic structures, and a second structured surface opposing the first structured surface and including a plurality of microstructures. An effective transmission of the optical film is not more than 1% less than a film with a comparable construction except for a smooth, non-structured second surface.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 28, 2019
    Inventors: Robert A. Yapel, Joseph T. Aronson, Matthew R.C. Atkinson, Gary T. Boyd, Slah Jendoubi, Mitchell A.F. Johnson, Scott R. Kaytor, Steven H. Kong, Fei Lu, Tri D. Pham, Robert B. Secor, Steven D. Solomonson
  • Patent number: 10156661
    Abstract: An optical film having a structured surface is described. At least 90% of the structured surface has a slope magnitude that is less than about 5 degrees. The optical film may have an optical haze of less than about 10% and an optical clarity of less than about 50%, or may have an optical haze of less than about 7.5% and an optical clarity of less than about 60%, or may have an optical haze of less than about 3% and an optical clarity of less than about 65%.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: December 18, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Robert A. Yapel, Joseph T. Aronson, Matthew R. C. Atkinson, Gary T. Boyd, Slah Jendoubi, Mitchell A. F. Johnson, Scott R. Kaytor, Steven H. Kong, Fei Lu, Tri D. Pham, Robert B. Secor, Steven D. Solomonson
  • Publication number: 20170357347
    Abstract: Touch sensitive projection screens are disclosed. In particular, touch sensitive projection screen including drive electrodes, sense electrodes, and optical diffusers are disclosed. The touch sensitive projection screens are adapted for use on a horizontal surface. Touch sensitive projection screens including shrinkable layers are also disclosed.
    Type: Application
    Filed: October 23, 2015
    Publication date: December 14, 2017
    Inventors: Steven T. Swartz, Hui Luo, Neeraj Sharma, Robert A. Yapel, Ronald L. Imken, Jung-Sheng Wu, David T. Yust, Richard J. Pokorny, Lan H. Liu, Craig R. Sykora, David J. McDaniel, Yu Yang, Mitchell A.F. Johnson
  • Patent number: 9625640
    Abstract: Optical films, optical stacks including the optical films, and display systems including the optical films are described. The optical film includes a first major surface that may include a plurality of first microstructures that extend along a first direction. The optical film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: April 18, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joseph T. Aronson, Slah Jendoubi, Mitchell A. F. Johnson, Scott R. Kaytor, Tri D. Pham, Robert A. Yapel, Joseph A. Zigal, Steven J. McMan, Steven D. Solomonson, Steven Hin-Chung Kong, Fei Lu, Gary T. Boyd
  • Publication number: 20170072434
    Abstract: A system and a method for providing a film having a matte finish is described. A coatable material is applied to a substrate. The viscosity of the coatable material is changed and a face-side roller contacts the coatable material to impart a matte finish thereon; and hardening the coatable material.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 16, 2017
    Inventors: Robert A. Yapel, Francis M. Aguirre, John P. Baetzold, Olester Benson, JR., Andrew J. Henderson, Mitchell A.F. Johnson, Leslie A. Todero, Steven J. McMan, David L. Phillips, Bruce D. Shalles
  • Patent number: 9539613
    Abstract: A system and a method for providing a film having a matte finish is described. A coatable material is applied to a substrate. The viscosity of the coatable material is changed and a face-side roller having patterned features thereon contacts the coatable material to impart a matte finish thereon; and hardening the coatable material.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 10, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Robert A. Yapel, Francis M. Aguirre, John P. Baetzold, Olester Benson, Jr., Andrew J. Henderson, Mitchell A. F. Johnson, Leslie A. Todero, Steven J. McMan, David L. Phillips, Bruce D. Shalles
  • Patent number: 9527336
    Abstract: Cleanable articles having overcoats with hydrophilic front surfaces and which are siloxane-bonded to an underlying body member. Also, methods of making and using such articles.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 27, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: David M. Mahli, Robert A. Yapel, Justin A. Riddle, Mitchell A. F. Johnson, Moses M. David, Frederick J. Gustafson, Lan H. Liu, Yu Yang, Naiyong Jing, Caleb T. Nelson
  • Publication number: 20160271997
    Abstract: A dry erase sheet assembly comprising: (a) a writing member having a front major surface and a rear major surface wherein the front major surface is capable of being used as a dry erase surface; (b) a support member having a low Deflection Stiffness Rating; (c) a pressure sensitive adhesive disposed on the rear major surface of the support member; and (d) a removable liner on the rear surface of the adhesive; wherein the sheet assembly is capable of being wound upon itself into roll configuration without disruption and the sheet assembly has a low Curl Memory Rating. Also a method of using such sheet assemblies.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 22, 2016
    Inventors: Tracie J. Berniard, Mitchell A. F. Johnson, Elizabeth A. Brodd
  • Publication number: 20160244641
    Abstract: A system and a method for making a web having a complex topography. A substrate having coatable material is contacted by a face-side roller having grooves set into the major surface thereof, the coatable material is then split between the face side roller and the substrate, resulting in a textured surface having a first area associated with the splitting from the major surface, and a second area resulting from splitting associated with areas of the face-side roller having grooves. Raised ridge features produced from the splitting step interconnect portions within the first area, and portions within the second area, and in between the first and second area.
    Type: Application
    Filed: October 9, 2014
    Publication date: August 25, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: John P. Baetzold, Mitchell A. F. Johnson, Steven J. McMan, Frank T. Sher, Robert A. Yapel, Patrick J. Yeshe
  • Patent number: 9383482
    Abstract: The present invention concerns antireflective films comprising a high refractive index layer (60) and low refractive index layer (80) disposed on the high refractive index layer. The antireflective films have a microstructured surface (70) that can be derived from a microreplicated tool.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: July 5, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher B. Walker, Jr., Christopher P. Tebow, Tri D. Pham, Steven H. Kong, Joseph T. Aronson, Kyle J. Lindstrom, Michael K. Gerlach, Michelle L. Toy, Taun L. McKenzie, Anthony M. Renstrom, Robert A. Yapel, Mitchell A. F. Johnson
  • Publication number: 20160103270
    Abstract: Optical films, optical stacks including the optical films, and display systems including the optical films are described. The optical film includes a first major surface that may include a plurality of first microstructures that extend along a first direction. The optical film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%.
    Type: Application
    Filed: November 24, 2015
    Publication date: April 14, 2016
    Inventors: Joseph T. Aronson, Slah Jendoubi, Mitchell A.F. Johnson, Scott R. Kaytor, Tri D. Pham, Robert A. Yapel, Joseph A. Zigal, Steven J. McMan, Steven D. Solomonson, Steven Hin-Chung Kong, Fei Lu, Gary T. Boyd
  • Patent number: 9229239
    Abstract: Light redirecting film is disclosed. The light redirecting film includes a first major surface that includes a plurality of first microstructures that extend along a first direction. The light redirecting film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%. The light redirecting film has an average effective transmission that is not less than about 1.75.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 5, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joseph T. Aronson, Slah Jendoubi, Mitchell A. F. Johnson, Scott R. Kaytor, Tri D. Pham, Robert A. Yapel, Joseph A. Zigal, Steven J. McMan, Steven D. Solomonson, Steven Hin-Chung Kong, Fei Lu, Gary T. Boyd
  • Publication number: 20150353777
    Abstract: Articles comprising: (1) a sheet having a first surface and a second surface and (2) an separation layer on at least a portion of the first surface, wherein the separation layer comprising (a) a binder layer with particles entrained therein and (b) an overcoat. Also methods for making such articles and methods for using such articles.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 10, 2015
    Inventors: Andrew J. CALLINAN, David M. MAHLI, Mitchell A.F. JOHNSON
  • Publication number: 20150321498
    Abstract: A note sheet comprising: (1) a substrate having a first main face and a second main face; (2) a writing receptive layer on the first main face of the substrate, the writing receptive layer having an exposed face or writing surface having a fine relief structure; and (3) at least one segment of repositionable pressure-sensitive adhesive layer on at least a portion of the second main face; wherein the substrate and writing receptive layer having a visible transmittance of at least about 80% and a haze of not more than about 60%. Also a method for making such sheets.
    Type: Application
    Filed: November 27, 2013
    Publication date: November 12, 2015
    Inventors: Atsushi TOYOTA, Robert A. YAPEL, Mitchell A.F. JOHNSON, David M. MAHLI, Frederick J. GUSTAFSON, Lan H. LIU, Yu YANG
  • Patent number: 8993059
    Abstract: Methods of forming patterned coatings are disclosed. The methods include the steps of disposing a composition onto a substrate to form a liquid coating on the substrate and providing or removing energy through a first pattern of areas on the coated film to form a morphologically patterned coating, the morphological pattern corresponding to the first pattern of areas.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 31, 2015
    Assignee: 3M Innovative Properties, Company
    Inventors: Peter E. Price, William B. Kolb, Mikhail L. Pekurovsky, Steven D. Solomonson, Mitchell A. F. Johnson
  • Patent number: 8888333
    Abstract: Light redirecting film is disclosed. The light redirecting film includes a first major surface that includes a plurality of first microstructures that extend along a first direction. The light redirecting film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is in a range from about 4% to about 20% and an optical clarity that is in a range from about 20% to about 60%. The light redirecting film has an average effective transmission that is not less than about 1.55.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 18, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Robert A. Yapel, Mitchell A. F. Johnson, Tri D. Pham, Joseph T. Aronson, Steven D. Solomonson, Scott R. Kaytor, Steven J. McMan, Fei Lu, Steven H. Kong, Slah Jendoubi, Gary T. Boyd
  • Publication number: 20140329012
    Abstract: Cleanable articles having overcoats with hydrophilic front surfaces and which are siloxane-bonded to an underlying body member. Also, methods of making and using such articles.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 6, 2014
    Inventors: David M. Mahli, Robert A. Yapel, Justin A. Riddle, Mitchell A.F. Johnson, Moses M. David, Frederick J. Gustafson, Lan H. Liu, Yu Yang, Naiyong Jing, Caleb T. Nelson
  • Publication number: 20140313587
    Abstract: Light redirecting film is disclosed. The light redirecting film includes a first major surface that includes a plurality of first microstructures that extend along a first direction. The light redirecting film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%. The light redirecting film has an average effective transmission that is not less than about 1.75.
    Type: Application
    Filed: February 21, 2014
    Publication date: October 23, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joseph T. Aronson, Slah Jendoubi, Mitchell A.F. Johnson, Scott R. Kaytor, Tri D. Pham, Robert A. Yapel, Joseph A. Zigal, Steven J. McMan, Steven D. Solomonson, Steven Hin-Chung Kong, Fei Lu, Gary T. Boyd
  • Patent number: 8858807
    Abstract: A process for making a microneedle array master comprises: (a) providing a photoreactive composition, the photoreactive composition comprising: (1) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction, and (2) at least one multiphoton photoinitiator system; and (b) imagewise exposing at least a portion of the composition to light sufficient to cause simultaneous absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light, the imagewise exposing being carried out in a pattern that is effective to define at least the surface of a plurality of microneedles. The microneedles may be solid and the outer surface of the microneedles may be characterized by at least one concave area. The master may be used to fabricate a tool for replication.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: October 14, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. DeVoe, Dennis E. Ferguson, Franklyn L. Frederickson, Mitchell A. F. Johnson, Mikhail L. Pekurovsky, Craig R. Sykora, Jeremy K. Larsen
  • Publication number: 20140057058
    Abstract: A system and a method for providing a film having a matte finish. The system includes means for providing a coated substrate, the coated substrate comprising a first coatable material applied to a substrate, the coatable material forming a first major surface of the coated substrate; means for changing the viscosity of the first coatable material from a first viscosity to a second viscosity; a face-side roller having an outer surface positioned to contact the first major surface of the coated substrate to impart a matte finish thereon; and optionally, means for hardening the first coatable material.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 27, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Robert A. Yapel, Francis M. Aguirre, John P. Baetzold, Olester Benson, JR., Andrew J. Henderson, Mitchell A.F. Johnson, Leslie A. Todero, Steven J. McMan, David L. Phillips, Bruce D. Shalles