Patents by Inventor Susan M. Von Stetten

Susan M. Von Stetten 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).

  • Halogen-free floor covering
    Patent number: 5276082
    Abstract: A surface covering including a blend of a silane-grafted ethylene/vinyl acetate polymer and an ungrafted thermoplastic polymer retains the desirable balance between indentation, tensile strength and elongation of a fully grafted EVA while permitting the reprocessibility of scrap material. Preferably, the silane graft density is one graft per about 100 carbons to one graft per about 5,000 carbons. The preferred EVA has about 18% to about 28% vinyl acetate.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: January 4, 1994
    Assignee: Armstrong World Industries, Inc.
    Inventors: John S. Forry, Susan M. Von Stetten
  • Charge dissipative surface coverings
    Patent number: 5091452
    Abstract: Quaternary ammonium salt antistatic agents having an organic chain of ten to twenty-five atoms plasticize the vinyl resin of a static charge dissipative surface covering. Such antistatic agents minimize migration and therefore retain their charge dissipative properties for a longer period of time. The class of plasticizing quaternary ammonium salt antistatic agents includes derivatives of unsaturated organic acids and alkyl ethers having a chain length of six to eighteen carbon atoms and a hydroxyl functionality.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: February 25, 1992
    Assignee: Armstrong World Industries, Inc.
    Inventors: Kenneth K. Ko, Jesse D. Miller, Jr., Susan M. Von Stetten
  • Charge dissipative floor tiles
    Patent number: 4944998
    Abstract: A surface covering product having static dissipative electrical properties comprises a consolidated agglomeration of individual chips of polymeric material and wherein at least a portion of said individual chips contain an antistatic agent. A second portion of individual chips contain no antistatic agent or a reduced amount of antistatic agent.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: July 31, 1990
    Assignee: Armstrong World Industries, Inc.
    Inventors: Kenneth K. Ko, Jesse D. Miller, Jr., Wayne R. Shelly, Susan M. Von Stetten
  • Charge dissipative floor tiles
    Patent number: 4826912
    Abstract: A surface covering product having static dissipative electrical properties is shown, which surface covering product comprises a consolidated agglomeration of individual chips of polymeric material and wherein at least a portion of said individual chips contain an antistatic agent.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: May 2, 1989
    Assignee: Armstrong World Industries, Inc.
    Inventors: Kenneth K. Ko, Jesse D. Miller, Jr., Wayne R. Shelly, Susan M. Von Stetten