Patents by Inventor Michael Stephen Wolfe

Michael Stephen Wolfe 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).

  • Patent number: 11072715
    Abstract: This disclosure relates to a conductive paste comprising a fine silver particle dispersion and a glass frit, wherein the fine silver particle dispersion comprising: (1) 65 to 95.4% by weight of fine silver particles which have average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, (3) 0.1 to 1.0% by weight of ethyl cellulose having weight average molecular weight of 10,000 to 120,000. Also provided are: a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying said fine silver particle dispersion on a substrate, and (b) heating the applied fine silver particle dispersion at 80 to 1000° C.; and an electrical device comprising a conductive thick film made with the foregoing paste.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 27, 2021
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Dave Hui, Michael Stephen Wolfe, Howard David Glicksman, Haixin Yang, Takashi Hinotsu, Shingo Teragawa
  • Publication number: 20200407531
    Abstract: A polymer thick film carbon black composition comprising 6-13 wt % conductive carbon black powder; and 87-94 wt % organic medium comprising thermoplastic polyurethane resin dissolved in an organic solvent may be used to form the resistive element of heaters in applications where significant stretching is required, particularly on substrates that can be highly elongated and, in particular, that can be used in wearable garment applications.
    Type: Application
    Filed: May 11, 2020
    Publication date: December 31, 2020
    Inventors: H David Rosenfeld, Ivan Chen, William George Kampert, Ping Tzeng, Fred E Nagle, Michael Stephen Wolfe
  • Publication number: 20200354895
    Abstract: The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: NATNAEL BEHABTU, XIAOQING LI, MICHAEL STEPHEN WOLFE
  • Patent number: 10827610
    Abstract: This invention is directed to substrates and articles utilizing these substrates that provide improved performance of printable electronics on polymer substrates. In particular, the improved substrates relate to polymer films and electrical conductors printed on them. Application of a thin polymeric coating to the polymer film provides the improved performance of the printed conductors.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 3, 2020
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, H David Rosenfeld, Robin Kobren
  • Publication number: 20200317935
    Abstract: This disclosure relates to a conductive paste comprising a fine silver particle dispersion and a glass frit, wherein the fine silver particle dispersion comprising: (1) 65 to 95.4% by weight of fine silver particles which have average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, (3) 0.1 to 1.0% by weight of ethyl cellulose having weight average molecular weight of 10,000 to 120,000. Also provided are: a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying said fine silver particle dispersion on a substrate, and (b) heating the applied fine silver particle dispersion at 80 to 1000 ° C.; and an electrical device comprising a conductive thick film made with the foregoing paste.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 8, 2020
    Inventors: Dave Hui, Michael Stephen Wolfe, Howard David Glicksman, Haixin Yang, Takashi Hinotsu, Shingo Teragawa
  • Publication number: 20200321139
    Abstract: This disclosure relates to a fine silver particle dispersion including: (1) 65 to 95.4% by weight of fine silver particles which have an average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having a primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, and (3) 0.1 to 1.0% by weight of ethyl cellulose having a weight average molecular weight of 10,000 to 120,000.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 8, 2020
    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Shingo TERAGAWA, Takashi HINOTSU, Dave HUI, Michael Stephen WOLFE, Howard David GLICKSMAN, Haixin YANG
  • Publication number: 20200308434
    Abstract: The present disclosure pertains to an aqueous inkjet ink containing a pigment as colorant, a polymeric dispersant, a polymeric binder, and a water-insoluble additive. The inks show improved properties for printing on paper and textile.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 1, 2020
    Inventors: Xiaoqing Li, Michael Stephen Wolfe
  • Patent number: 10741300
    Abstract: The present invention provides a thick-film paste composition for printing the front side of a solar cell device having one or more insulating layers. The thick-film paste comprises an electrically conductive metal and an oxide composition dispersed in an organic medium that includes microgel particles and an organopolysiloxane.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: August 11, 2020
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hoang Vi Tran, Hee Hyun Lee, Michael Stephen Wolfe
  • Patent number: 10731297
    Abstract: The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: August 4, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Natnael Behabtu, Xiaoqing Li, Michael Stephen Wolfe
  • Patent number: 10403770
    Abstract: A conductive paste composition comprises (i) an inorganic powder comprising at least a conductive powder, (ii) at least one microgel polymer, and (iii) a solvent. The paste composition may be used in a process for manufacturing an electrical device comprising: preparing a substrate; applying the conductive paste onto the substrate in a preselected pattern; and heating the applied conductive paste to form a conductive structure that provides an electrode for connecting the device. The paste composition beneficially permits the formation of narrow, high aspect ratio features in the conductive structure.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: September 3, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, John Donald Summers, Bryan Benedict Sauer, Hoang Vi Tran, Brian D Mather, Hee Hyun Lee, Esther Kim, Ma Helen Cativo, Yuefei Tao
  • Patent number: 10370549
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments. The self-dispersing pigments are modified with multivalent cations.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: August 6, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, Michael J. Eiseman, Loretta L. Tam, Cullen Kirkpatrick
  • Patent number: 10351708
    Abstract: This invention pertains to self-dispersing pigment dispersions. The self-dispersing pigments are modified with a multivalent cation and an anionic polymer.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: July 16, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, Charles T. Berge, Loretta L. Tam, Cullen Kirkpatrick
  • Publication number: 20190103200
    Abstract: This disclosure relates to a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying a fine silver particle dispersion on a substrate, wherein the fine silver particle dispersion comprises, (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion; and (b) heating the applied fine silver particle dispersion at 80 to 1000° C.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 4, 2019
    Inventors: Dave Hui, Michael Stephen Wolfe, Howard David Glicksman, Haixin Yang, Takashi Hinotsu, Shingo Teragawa
  • Publication number: 20190100641
    Abstract: This disclosure relates to a fine silver particle dispersion comprising: (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 4, 2019
    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Shingo TERAGAWA, Takashi HINOTSU, Dave HUI, Michael Stephen WOLFE, Howard David GLICKSMAN, Haixin YANG
  • Publication number: 20180258590
    Abstract: The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate.
    Type: Application
    Filed: October 24, 2016
    Publication date: September 13, 2018
    Inventors: Natnael Behabtu, Xiaoqing Li, Michael Stephen Wolfe
  • Publication number: 20180155560
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments. The self-dispersing pigments are modified with multivalent cations.
    Type: Application
    Filed: April 27, 2016
    Publication date: June 7, 2018
    Inventors: Michael Stephen Wolfe, Michael J. Eiseman, Loretta L. Tam, Cullen Kirkpatrick
  • Publication number: 20180134896
    Abstract: This invention pertains to self-dispersing pigment dispersions. The self-dispersing pigments are modified with a multivalent cation and an anionic polymer.
    Type: Application
    Filed: April 27, 2016
    Publication date: May 17, 2018
    Inventors: Michael Stephen WOLFE, Charles T. BERGE, Loretta L. TAM, Cullen KIRKPATRICK
  • Publication number: 20180132350
    Abstract: This invention is directed to substrates and articles utilizing these substrates that provide improved performance of printable electronics on polymer substrates. In particular, the improved substrates relate to polymer films and electrical conductors printed on them. Application of a thin polymeric coating to the polymer film provides the improved performance of the printed conductors.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 10, 2018
    Inventors: MICHAEL STEPHEN WOLFE, H DAVID ROSENFELD, ROBIN KOBREN
  • Publication number: 20180102198
    Abstract: The present invention provides a thick-film paste composition for printing the front side of a solar cell device having one or more insulating layers. The thick-film paste comprises an electrically conductive metal and an oxide composition dispersed in an organic medium that includes microgel particles and an organopolysiloxane.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 12, 2018
    Inventors: Hoang VI Tran, Hee Hyun Lee, Michael Stephen Wolfe
  • Publication number: 20170362453
    Abstract: The present disclosure provides an ink for inkjet printing. The inkjet ink comprises a carbon black pigment dispersion. The carbon black pigment in the dispersion has low oil absorption.
    Type: Application
    Filed: December 8, 2015
    Publication date: December 21, 2017
    Inventors: Waifong Liew Anton, Michael Stephen Wolfe, Anthony W. Kluth