Patents by Inventor William E. Velvel

William E. Velvel 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).

  • Wound rotor element and centrifuge fabricated therefrom
    Patent number: 4860610
    Abstract: A centrifuge rotor is fabricated of a stacked plurality of tiers where each tier is formed from a stacked array of wound arms. Each arm is formed from an array of layered turns of anisotropic fibers having parallel side portions connected through curved end turn portions.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: August 29, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Peter Popper, William E. Velvel
  • Centrifuge rotor having a flexible carrier
    Patent number: 4659325
    Abstract: A centrifuge rotor which a central hub is characterized by a flexible carrier formed from a plurality of fibers arranged in a predetermined textile structure. The carrier has a socket formed at the radially outer end thereof by the interconnection of the fibers. The socket may receive a vessel therein.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: April 21, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul M. Cole, William G. Johanson, Ronald F. McConnell, Peter Popper, William E. Velvel