Patents by Inventor Elizabeth S. Bredeson

Elizabeth S. Bredeson 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).

  • Pentafluoropropane blowing agent-containing resin blend for use in making integral skin foams
    Patent number: 6218443
    Abstract: It has been found that non-chlorinated pentafluoropropane blowing agents may be used alone or in combination with water in flexible integral skin foams. For example, foams prepared from a resin blend incorporating 1,1,1,3,3-pentafluoropropane (HFA-245fa) alone or in combination with water exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. Such foams made using the resin blend of the present invention are suitable for use in many applications including, for example, shoe soles.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: April 17, 2001
    Assignee: BASF Corporation
    Inventors: Valeri L. Valoppi, Elizabeth S. Bredeson
  • Method of making a low density, molded integral skin polyurethane foam
    Patent number: 6010649
    Abstract: It has been found that non-chlorinated pentafluoropropane blowing agents may be used alone or in combination with water in a method of making flexible integral skin foams. For example, foams prepared using 1,1,1,3,3-pentafluoropropane (HFA-245fa) alone or in combination with water exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. The method of the the present invention produce foams which are suitable for use in many applications including, for example, shoe soles.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: January 4, 2000
    Assignee: BASF Corporation
    Inventors: Valeri L. Valoppi, Elizabeth S. Bredeson
  • Integral skin foams employing pentafluoropropane blowing agents
    Patent number: 5906999
    Abstract: It has been found that non-chlorinated pentafluoropropane blowing agents may be used alone or in combination with water in flexible integral skin foams. For example, foams prepared using 1,1,1,3,3-pentafluoropropane (HFA-245fa) alone or in combination with water exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. The foams of the present invention are suitable for use in many applications including, for example, shoe soles.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: May 25, 1999
    Assignee: BASF Corporation
    Inventors: Valeri L. Valoppi, Elizabeth S. Bredeson