Patents by Inventor H. Clark Lind

H. Clark Lind 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).

  • Nonwoven fibrous web for tobacco filter
    Patent number: 5022964
    Abstract: A nonwoven fibrous web material that contains cellulose ester fibers, cellulose ester fibrets and a minor amount of activated fusible fibers uniformly dispersed throughout is particularly well suited as a filter media. The activated fusible fibers are effective for retaining within the filter web any particulate material resulting from corrugation without adversely affecting the filtration efficiency of the cellulose ester fibers and fibrets. Alternatively, the fibrous web material may include an effective amount of natural cellulosic fibers.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: June 11, 1991
    Assignees: The Dexter Corporation, Hoechst Celanese Corporation
    Inventors: L. Paul Crane, H. Clark Lind, Martine E. Frederix