Patents by Inventor Stephen M. Lindsay

Stephen M. Lindsay 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: 20240130905
    Abstract: Absorbent substrates including a high percentage of superabsorbent material and method of manufacturing such absorbent substrates are disclosed. An absorbent substrate can include an intake layer including a first plurality of fibers and an absorbent layer. The absorbent layer can include superabsorbent material providing greater than 80% of the absorbent layer by total weight of the absorbent layer. The intake layer and the absorbent layer can provide an integrated material including an interface between the intake and absorbent layers. The interface can include at least some of the first plurality of fibers of the intake layer mixed with at least some of the absorbent layer.
    Type: Application
    Filed: February 25, 2022
    Publication date: April 25, 2024
    Inventors: Stephen M. Lindsay, Greg J. DeGrave, Jian Qin, Stephen A. Marrano, Francis P. Abuto
  • Publication number: 20240130904
    Abstract: Absorbent materials described herein can include an intake layer and an absorbent layer. The absorbent material can include a saturation capacity greater than 125 grams, and a second intake time of less than 50 seconds and a wet thickness of less than 17 mm according to the Modified Fluid Intake Under Pressure Test as described herein. In some aspects, the intake layer and the absorbent layer can provide an integrated material including an interface between the intake layer and the absorbent layer. The interface can include at least some fibers of the intake layer mixed with at least some fibers of the absorbent layer.
    Type: Application
    Filed: February 25, 2022
    Publication date: April 25, 2024
    Inventors: Jian Qin, Francis P. Abuto, Sara L. Rosack, Stephen A. Marrano, Stephen M. Lindsay
  • Publication number: 20230148342
    Abstract: Described herein are responsive absorbent articles. The responsive absorbent articles are capable of producing unique topographies and features upon wetting that add or enhance functionality as compared to conventional absorbent articles. Compositions and methods described herein are useful in a variety of absorbent products.
    Type: Application
    Filed: April 30, 2020
    Publication date: May 11, 2023
    Inventor: Stephen M. LINDSAY
  • Publication number: 20230072598
    Abstract: The present disclosure relates to tissue products comprising crosslinked fibers. The tissue products generally have good formation, such as a Formation Index greater than about 20, strength, such as geometric mean tensile strengths greater than about 700 g/3? and high bulk, such as sheet bulks greater than about 10 cc/g. Unlike many prior art crosslinked fibers, the crosslinked softwood pulps of the present invention, which are preferably prepared using a glyoxal based crosslinking reagent, are readily dispersible in water and have relatively low degrees of kink and curl. As such, the fibers are well suited for forming wet-laid tissue products and more particularly wet-laid tissue products having improved physical properties, such as improved bulk.
    Type: Application
    Filed: January 20, 2021
    Publication date: March 9, 2023
    Inventors: Stephen M. Lindsay, Richmond R. Cohen, Kenneth R. Schueler, JR., Kenneth J. Zwick
  • Publication number: 20220325476
    Abstract: The present invention provides a wet-laid tissue product comprising regenerated cellulose fibers that can provide 25% or less of the total weight of the wet-laid tissue product. The regenerated cellulose fibers can have a denier of less than 0.9 and a fiber length of less than 6.0 mm. The wet-laid tissue product can provide improvements in softness at a given strength.
    Type: Application
    Filed: June 17, 2019
    Publication date: October 13, 2022
    Inventors: Bo Shi, Thomas G. Shannon, Brent M. Thompson, Michael A. Zawadzki, Stephen M. Lindsay
  • Publication number: 20220127792
    Abstract: A method for producing a foam-formed multilayered substrate that includes producing an aqueous-based foam including at least 3% by weight non-straight synthetic binder fibers, wherein the non-straight synthetic binder fibers have an average length greater than 2 mm; forming together a wet sheet layer from the aqueous-based foam and a cellulosic fiber layer, wherein the cellulosic fiber layer includes at least 60 percent by weight cellulosic fibers; and drying the combined layers to obtain the foam-formed multilayer substrate. A multilayered substrate includes a first layer including at least 60 percent by weight non-straight synthetic binder fibers having an average length greater than 2 mm; and a second layer including at least 60 percent by weight cellulosic fiber, wherein the first layer is in a facing relationship with the second layer, and wherein the multilayered substrate has a wet/dry tensile ratio of at least 60%.
    Type: Application
    Filed: January 11, 2022
    Publication date: April 28, 2022
    Inventors: Deborah J. Calewarts, Jian Qin, Charles W. Colman, Cathleen M. Uttecht, Donald E. Waldroup, Francis P. Abuto, Jenny L. Day, Stephen M. Lindsay
  • Patent number: 11255051
    Abstract: A method for producing a foam-formed multilayered substrate that includes producing an aqueous-based foam including at least 3% by weight non-straight synthetic binder fibers, wherein the non-straight synthetic binder fibers have an average length greater than 2 mm; forming together a wet sheet layer from the aqueous-based foam and a cellulosic fiber layer, wherein the cellulosic fiber layer includes at least 60 percent by weight cellulosic fibers; and drying the combined layers to obtain the foam-formed multilayer substrate. A multilayered substrate includes a first layer including at least 60 percent by weight non-straight synthetic binder fibers having an average length greater than 2 mm; and a second layer including at least 60 percent by weight cellulosic fiber, wherein the first layer is in a facing relationship with the second layer, and wherein the multilayered substrate has a wet/dry tensile ratio of at least 60%.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 22, 2022
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Deborah J. Calewarts, Jian Qin, Charles W. Colman, Cathleen M. Uttecht, Donald E. Waldroup, Francis P. Abuto, Jenny L. Day, Stephen M. Lindsay
  • Publication number: 20210292944
    Abstract: A nonwoven substrate includes individual fibers each having a fiber surface and a fiber diameter, wherein a portion of the individual fibers include a micro-embossed pattern, and wherein the micro-embossed pattern includes pattern elements equal to or smaller than the fiber diameter. The pattern elements can be recessed into and/or extend out of the fiber surface, and the nonwoven substrate can include polypropylene or polyethylene. A disposable absorbent article includes a nonwoven substrate having individual fibers each having a fiber surface and a fiber diameter, wherein a portion of the individual fibers include a micro-embossed pattern, and wherein the micro-embossed pattern includes pattern elements equal to or smaller than the fiber diameter.
    Type: Application
    Filed: July 10, 2018
    Publication date: September 23, 2021
    Applicant: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventors: Stephen M. Lindsay, Wing-Chak Ng, Keyur Desai
  • Publication number: 20200370246
    Abstract: A method for producing a foam-formed multilayered substrate that includes producing an aqueous-based foam including at least 3% by weight non-straight synthetic binder fibers, wherein the non-straight synthetic binder fibers have an average length greater than 2 mm; forming together a wet sheet layer from the aqueous-based foam and a cellulosic fiber layer, wherein the cellulosic fiber layer includes at least 60 percent by weight cellulosic fibers; and drying the combined layers to obtain the foam-formed multilayer substrate. A multilayered substrate includes a first layer including at least 60 percent by weight non-straight synthetic binder fibers having an average length greater than 2 mm; and a second layer including at least 60 percent by weight cellulosic fiber, wherein the first layer is in a facing relationship with the second layer, and wherein the multilayered substrate has a wet/dry tensile ratio of at least 60%.
    Type: Application
    Filed: November 29, 2017
    Publication date: November 26, 2020
    Inventors: Deborah J. Calewarts, Jian Qin, Charles W. Colman, Cathleen M. Uttecht, Donald E. Waldroup, Francis P. Abuto, Jenny L. Day, Stephen M. Lindsay
  • Patent number: 8945486
    Abstract: A microwell device is provided. The device includes a plate having a upper surface. The upper surface has first and second recesses formed therein. Each recess has an outer periphery. First and second portions of microwells are formed in upper surface of the plate. The first portion of microwells are spaced about the outer periphery of the first recess and the second portion of microwells spaced about the outer periphery of the first recess. A first barrier is about a first portions of the microwells for fluidicly isolating the first portion of the microwells and a second barrier about a second portions of microwells for fluidicly isolating the second portion of the microwells.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: February 3, 2015
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Jay W. Warrick, John Yin, Stephen M. Lindsay
  • Publication number: 20140255276
    Abstract: A microwell device is provided. The device includes a plate having a upper surface. The upper surface has first and second recesses formed therein. Each recess has an outer periphery. First and second portions of microwells are formed in upper surface of the plate. The first portion of microwells are spaced about the outer periphery of the first recess and the second portion of microwells spaced about the outer periphery of the first recess. A first barrier is about a first portions of the microwells for fluidicly isolating the first portion of the microwells and a second barrier about a second portions of microwells for fluidicly isolating the second portion of the microwells.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 11, 2014
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Jay W. Warrick, John Yin, Stephen M. Lindsay