Patents by Inventor Steven Thomas Hardwick

Steven Thomas Hardwick 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).

  • Elastomeric articles
    Patent number: 5977223
    Abstract: A method of manufacturing a thin-walled polyurethane article includes dipping a shaped former into a coagulant solution and subsequently dipping the shaped former into an aqueous-phase polyurethane/plasticizer dispersion wherein the unplasticized polyurethane has a mean particle size of between about 0.5 .mu.m and 1.0 .mu.m and wherein the plasticizer causes the polyurethane particles to swell until they have a mean particle size of between about 1.5 .mu.m and 3.0 .mu.m. Articles so produced have a thickness of between 0.03 mm to 1.0 mm, a tensile strength of between 17 MPa and 60 Mpa and an elongation at break of greater than 650%.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 2, 1999
    Assignee: Ansell Healthcare Products, Inc.
    Inventors: Allison Marie Ryan, Jeffery G. Nile, Stanley J. Gromelski, Steven Thomas Hardwick, Richard Milner, Paul Cacioli