Patents by Inventor Helen K. Bergstrom

Helen K. Bergstrom 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: 20210268766
    Abstract: A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 2, 2021
    Inventors: Joseph G. SARGENT, Gerald T. Buss, Michael P. Cushman, Timothy P. Pollock, Helen K. Bergstrom
  • Publication number: 20210206061
    Abstract: A method of forming a three-dimensional body from a mixture, wherein the mixture can comprise dispersed solid polymeric particles and a curable binder. In a particular embodiment the solid polymeric particles can be fluoropolymeric particles. The method can include at least partial removal of the cured binder and sintering, to obtain a sintered polymeric three-dimensional body. In one embodiment, the sintered three-dimensional body can be PTFE.
    Type: Application
    Filed: March 4, 2021
    Publication date: July 8, 2021
    Inventors: Jean-Marie LEBRUN, Helen K. BERGSTROM, Qiaoxi LI
  • Patent number: 11034129
    Abstract: A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: June 15, 2021
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Joseph G. Sargent, Gerard T. Buss, Michael P. Cushman, Timothy P. Pollock, Helen K. Bergstrom
  • Patent number: 10953597
    Abstract: A method of forming a three-dimensional body from a mixture, wherein the mixture can comprise dispersed solid polymeric particles and a curable binder. In a particular embodiment the solid polymeric particles can be fluoropolymeric particles. The method can include at least partial removal of the cured binder and sintering, to obtain a sintered polymeric three-dimensional body. In one embodiment, the sintered three-dimensional body can be PTFE.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: March 23, 2021
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Jean-Marie Lebrun, Helen K. Bergstrom, Qiaoxi Li
  • Publication number: 20190039290
    Abstract: A method of forming a three-dimensional body from a mixture, wherein the mixture can comprise dispersed solid polymeric particles and a curable binder. In a particular embodiment the solid polymeric particles can be fluoropolymeric particles. The method can include at least partial removal of the cured binder and sintering, to obtain a sintered polymeric three-dimensional body. In one embodiment, the sintered three-dimensional body can be PTFE.
    Type: Application
    Filed: July 20, 2018
    Publication date: February 7, 2019
    Inventors: Jean-Marie LEBRUN, Helen K. Bergstrom, Qiaoxi Li
  • Publication number: 20170232716
    Abstract: A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 17, 2017
    Inventors: Gerard T. BUSS, Michael P. CUSHMAN, Timothy P. POLLOCK, Joseph G. SARGENT, Helen K. Bergstrom