Patents by Inventor Michael Hapwell

Michael Hapwell 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).

  • Low application temperature elastic attachment adhesive
    Publication number: 20070161742
    Abstract: Low application temperature thermoplastic hot melt adhesives are particularly useful as elastic attachment adhesives. The adhesives have a viscosity at 275° F. of less than about 8,000 cp, a yield stress of less than about than 80 psi and a creep performance for a bond made through strand coating of less than about 15%. Preferred are adhesives that have a creep performance for a bond made through spiral coating of less than about 25%.
    Type: Application
    Filed: January 31, 2005
    Publication date: July 12, 2007
    Inventors: Qiwei He, Michael Hapwell, Ju-ming Hung, Martin Riswick, Wei Kong, Kenneth Martin, Tahir Iqbal