Patents by Inventor Robert J. DeVoe

Robert J. DeVoe 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: 20200362157
    Abstract: The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes at least one urethane component, at least one monofunctional reactive diluent, an initiator, and optionally an inhibitor. The present disclosure also provides an article including the reaction product of the photopolymerizable composition. Further, the present disclosure provides a method of making an article. The method includes (i) providing a photopolymerizable composition and (ii) selectively curing the photopolymerizable composition to form an article. The method optionally also includes (iii) curing unpolymerized urethane component and/or reactive diluent remaining after step (ii). Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object.
    Type: Application
    Filed: November 9, 2018
    Publication date: November 19, 2020
    Inventors: Zeba Parkar, Jonathan E. Janoski, Carla S. Thomas, Robert J. DeVoe, Ahmed S. Abuelyaman, Eric W. Nelson, Richard B. Ross, John M. Riedesel
  • Publication number: 20200181387
    Abstract: Described herein is a curable composition comprising an amorphous fluoropolymer having an iodine, bromine and/or nitrile cure site; a peroxide cure system comprising a peroxide and a Type II coagent; and a photoinitiator, wherein the curable composition is substantially free of a binder material. Also described herein, are methods of curing the curable composition using actinic radiation and articles thereof.
    Type: Application
    Filed: July 17, 2018
    Publication date: June 11, 2020
    Inventors: Xuan Jiang, Jeffrey N. Bartow, Robert J. DeVoe, Tatsuo Fukushi, Klaus Hintzer, Tho Q. Nguyen, Sheng Ye, Fee Zentis
  • Patent number: 10228617
    Abstract: A semi-submersible microscope objective includes a microscope objective having a protective barrel with an optical inlet and optical outlet, and a protective element affixed to the microscope objective, sealing the optical exit but not the optical inlet. A transparent portion of the protective element is aligned with the optical exit. The protective element is separable from the microscope objective without damaging the microscope objective. Use of the semi-submersible microscope objective in a multiphoton imaging method is also disclosed.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 12, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Brian J. Gates, Robert J. DeVoe, Tzu-Chen Lee, Bradford B. Wright
  • Publication number: 20190016085
    Abstract: Article comprising a first microstructured layer comprising a first material, and having first and second opposed major surfaces, the first major surface being a microstructured surface, and the microstructured surafce having peaks and valleys, wherein the peaks are microstructural features each having a height defined by the distance between the peak of the respective microstructural feature and an adjacent valley; and a second layer comprising an adhesive material, and having a first and second opposed major surfaces, the adhesive material comprising a reaction product of a mixture comprising (meth)acrylate and epoxy in the presence of each other, wherein at least a portion of the second major surface of the second layer is directly attached to at least a portion of the first major microstructured surface of the first layer.
    Type: Application
    Filed: December 22, 2016
    Publication date: January 17, 2019
    Inventors: Jeffrey L. Solomon, Saswata Chakraborty, Robert J. Devoe, Wayne S. Mahoney, Eric W. Nelson, Kundapur Raveesh Shenoy
  • Publication number: 20180363613
    Abstract: Nozzle and a method of making the same are disclosed. The method includes forming a material into a nozzle forming microstructured pattern comprising a plurality of nozzle hole forming features and planar control cavity forming features; forming at least one different material into a nozzle pre-form using the nozzle forming microstructured pattern, with the nozzle pre-form comprising a plurality of nozzle pre-form holes and sacrificial planar control cavities; and forming a nozzle from the nozzle pre-form, said forming the nozzle comprising removing enough of the at least one different material to remove the sacrificial planar control cavities so as to form a top surface of the nozzle pre-form into a top surface of the nozzle, and to form each of the nozzle pre-form holes into a nozzle through hole.
    Type: Application
    Filed: August 13, 2018
    Publication date: December 20, 2018
    Inventors: Barry S. Carpenter, Ryan C. Shirk, Robert J. DeVoe, James C. Novack
  • Patent number: 10133174
    Abstract: A method of fabricating a structure includes disposing a liquid photoreactive composition on a substrate, exposing a portion of the liquid photoreactive composition to laser light of sufficient intensity and wavelength to cause polymerization via two-photon excitation of the two-photon sensitizer and polymerization of a portion of the liquid photoreactive composition thereby providing an exposed composition; and developing the exposed composition to provide the structure. The liquid composition includes: at least one cationically polymerizable polyepoxide; at least one compound comprising free-radically polymerizable groups; an effective amount of a two-photon photoinitiator system, wherein the weight ratio of component (a) to component (b) is from 25:75 to 75:25, inclusive. The two-photon photoinitiator system includes a two-photon sensitizer and an aromatic onium salt. The liquid photoreactive composition may contain less than about one percent by weight of organic solvent.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: November 20, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Tzu-Chen Lee, Robert J. DeVoe, Brian K. Nelson, Brian J. Gates
  • Patent number: 10054094
    Abstract: Nozzle and a method of making the same are disclosed.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: August 21, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Barry S. Carpenter, Ryan C. Shirk, Robert J. DeVoe, James C. Novack
  • Publication number: 20180231888
    Abstract: A semi-submersible microscope objective includes a microscope objective having a protective barrel with an optical inlet and optical outlet, and a protective element affixed to the microscope objective, sealing the optical exit but not the optical inlet. A transparent portion of the protective element is aligned with the optical exit. The protective element is separable from the microscope objective without damaging the microscope objective. Use of the semi-submersible microscope objective in a multiphoton imaging method is also disclosed.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 16, 2018
    Inventors: Brian J. Gates, Robert J. DeVoe, Tzu-Chen Lee, Bradford B. Wright
  • Patent number: 10040905
    Abstract: Poly(benzoxazine) polymer are prepared by heating a benzoxazine compound in the presence of a (meth)acrylate copolymer having pendent tosylate groups, resulting in an interpenetrating polymer network of a poly(benzoxazine) and a crosslinked (meth)acrylate copolymer.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: August 7, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Ilya Gorodisher, Robert J. Webb, Guy D. Joly, George W. Griesgraber, Robert J. Devoe
  • Patent number: 9927702
    Abstract: A semi-submersible microscope objective (100) includes a microscope objective having a protective barrel (120) with an optical inlet (122) and optical outlet (124), and a protective element (130) affixed to the microscope objective, sealing the optical outlet (124) but not the optical inlet (122). A transparent portion (132) of the protective element is aligned with the optical exit (124). The protective element is separable from the microscope objective without damaging the microscope objective. Use of the semi-submersible microscope objective in a multiphoton imaging method is also disclosed.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: March 27, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Brian J. Gates, Robert J. DeVoe, Tzu-Chen Lee, Bradford B. Wright
  • Publication number: 20160306277
    Abstract: A method of fabricating a structure includes disposing a liquid photoreactive composition on a substrate, exposing a portion of the liquid photoreactive composition to laser light of sufficient intensity and wavelength to cause polymerization via two-photon excitation of the two-photon sensitizer and polymerization of a portion of the liquid photoreactive composition thereby providing an exposed composition; and developing the exposed composition to provide the structure. The liquid composition includes: at least one cationically polymerizable polyepoxide; at least one compound comprising free-radically polymerizable groups; an effective amount of a two-photon photoinitiator system, wherein the weight ratio of component (a) to component (b) is from 25:75 to 75:25, inclusive. The two-photon photoinitiator system includes a two-photon sensitizer and an aromatic onium salt. The liquid photoreactive composition may contain less than about one percent by weight of organic solvent.
    Type: Application
    Filed: December 1, 2014
    Publication date: October 20, 2016
    Inventors: Tzu-Chen Lee, Robert J. DeVoe, Brian K. Nelson, Brian J. Gates
  • Publication number: 20160299426
    Abstract: A semi-submersible microscope objective (100) includes a microscope objective having a protective barrel (120) with an optical inlet (122) and optical outlet (124), and a protective element (130) affixed to the microscope objective, sealing the optical outlet (124) but not the optical inlet (122). A transparent portion (132) of the protective element is aligned with the optical exit (124). The protective element is separable from the microscope objective without damaging the microscope objective. Use of the semi-submersible microscope objective in a multiphoton imaging method is also disclosed.
    Type: Application
    Filed: December 1, 2014
    Publication date: October 13, 2016
    Inventors: Brian J. Gates, Robert J. DeVoe, Tzu-Chen Lee, Bradford B. Wright
  • Patent number: 9440376
    Abstract: A method of forming a working mold including placing a substrate near an electrode in a chamber, the substrate (610) having at least a first structured surface (620); providing power to the electrode to create a plasma, —introducing vapor of liquid silicone molecules into the plasma; and depositing a release layer (630), the release layer (630) including a silicone containing polymer, the release layer (630) being deposited on at least a portion of the first structured surface of the substrate to form the working mold.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: September 13, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Guoping Mao, Moses M. David, Olester Benson, Jr., Robert J. DeVoe, Jennifer J. Sahlin
  • Patent number: 9441144
    Abstract: Novel benzoxazine-thiol adducts are described, which may be may be cured to produce compositions useful in coating, sealants, adhesive and many other applications.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: September 13, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Ilya Gorodisher, Robert J. Webb, Robert J. Devoe
  • Publication number: 20160229957
    Abstract: Poly(benzoxazine) polymer are prepared by heating a benzoxazine compound in the presence of a (meth)acrylate copolymer having pendent tosylate groups, resulting in an interpenetrating polymer network of a poly(benzoxazine) and a crosslinked (meth)acrylate copolymer.
    Type: Application
    Filed: October 6, 2014
    Publication date: August 11, 2016
    Inventors: Ilya Gorodisher, Robert J. Webb, Guy D. Joly, George W. Griesgraber, Robert J. Devoe
  • Patent number: 9329326
    Abstract: Light guides comprising light extraction structure arrays and articles comprising such light guides are described.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: May 3, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Charles A. Marttila, Charles D. Hoyle, David A. Ender, Jaime B. Willoughby, Robert J. DeVoe
  • Patent number: 9104100
    Abstract: Compositions such as photoresists and microfabrication processes are provided that can produce high-fidelity microfabricated structures. The provided photoresists can have reduced swelling during the development phase and can give tight tolerances for products, such as microneedles, that can be used, for example, in the medical field. The provided compositions include a photoresist, a photoinitiator system dispersed in the photoresist, and a polymer-tethered nanoparticle dispersed in the photoresist. The photoresist can be a negative photoresist and the photoinitiator system can include a two-photoinitiator system. The polymer-tethered nanoparticle can include an acrylic polymer and, in some embodiments, can include poly(methyl methacrylate). The nanoparticles can include silica.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: August 11, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: David H. Redinger, Robert J. DeVoe, Belma Erdogan-Haug
  • Patent number: 9102083
    Abstract: A method of forming a working mold including: placing a substrate (610) on an electrode in a chamber, the substrate having at least a first structured surface (620) and the substrate including a thermoset polymeric material; introducing a release (630) layer forming gas into the chamber, wherein the release layer forming gas includes silicon containing gas and oxygen gas in an atomic ratio of not greater than about 200; providing power to the electrode to create a plasma of the release layer forming gas within the chamber; and depositing a release layer formed from the release layer forming gas on at least the first structured surface of the substrate to form a working mold.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 11, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Moses M. David, Guoping Mao, Olester Benson, Jr., Robert J. DeVoe, Jennifer J. Sahlin
  • Patent number: 9096503
    Abstract: Novel benzoxazine-thiol adducts are described, which may be may be cured to produce compositions useful in coating, sealants, adhesive and many other applications.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: August 4, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Ilya Gorodisher, Robert J. Webb, Robert J. DeVoe
  • Publication number: 20150030985
    Abstract: The present disclosure relates to multiphoton absorption methods for curing a photocurable composition under conditions wherein negative contrast occurs. The photocurable composition includes a free-radically polymerizable compound. The method is applicable to fabrication of structures with micron-scale dimensions or less.
    Type: Application
    Filed: February 18, 2013
    Publication date: January 29, 2015
    Inventors: Robert J. DeVoe, Tzu-Chen Lee, Brian J. Gates