Patents Assigned to Freudenberg Nonwovens Ltd.
  • Fiber embedded polishing pad
    Patent number: 7186166
    Abstract: A polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The loose fibers define and the precursors were mixed first with curatives, then mold into a pad form. The pad may include a thin layer of free fibers at its polishing surface. A segment of at least a portion of the free fibers are embedded in the adjacent body of the polymer and fibers.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: March 6, 2007
    Assignees: International Business Machines Corporation, Freudenberg Nonwovens Ltd.
    Inventors: Shyng-Tsong Chen, Kenneth Davis, Oscar Kai Chi Hsu, Kenneth Rodbell, Jean Vangsness
  • Fiber embedded polishing pad
    Publication number: 20060116059
    Abstract: A polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The loose fibers define and the precursors were mixed first with curatives, then mold into a pad form. The pad may include a thin layer of free fibers at its polishing surface. A segment of at least a portion of the free fibers are embedded in the adjacent body of the polymer and fibers.
    Type: Application
    Filed: November 14, 2005
    Publication date: June 1, 2006
    Applicants: International Business Machines Corporation, Freudenberg Nonwovens Ltd.
    Inventors: Shyng-Tsong Chen, Kenneth Davis, Oscar Hsu, Kenneth Rodbell, Jean Vangsness
  • Fiber embedded polishing pad
    Patent number: 6964604
    Abstract: A polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The loose fibers define and the precursors were mixed first with curatives, then mold into a pad form. The pad may include a thin layer of free fibers at its polishing surface. A segment of at least a portion of the free fibers are embedded in the adjacent body of the polymer and fibers.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: November 15, 2005
    Assignees: International Business Machines Corporation, Freudenberg Nonwovens Ltd.
    Inventors: Shyng-Tsong Chen, Kenneth Davis, Oscar Kai Chi Hsu, Kenneth Rodbell, Jean Vangsness
  • Polishing pads with polymer filled fibrous web, and methods for fabricating and using same
    Publication number: 20040162013
    Abstract: A polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The fibers define interstices, and the precursors fill these interstices substantially completely before completion of the reaction. The pad may include a thin layer of free fibers at its polishing surface. A segment of at least a portion of the free fibers are embedded in the adjacent body of the polymer and fibers. The fibers may be separate, or in the form of a woven or non-woven web.
    Type: Application
    Filed: February 23, 2004
    Publication date: August 19, 2004
    Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, FREUDENBERG NONWOVENS, LTD. PARTNERSHIP
    Inventors: Shyng-Tsong Chen, Kenneth P. Rodbell, Oscar Kai Chi Hsu, Jean Vangsness, David S. Gilbride, Scott Clayton Billings, Kenneth Davis
  • Protective garment
    Patent number: 4860382
    Abstract: A protective garment is shown for protecting the wear against noxious chemicals in liquid aerosol and vapor form. The protective garment is made up of two separate plies, the first ply comprising a fire retardant fabric having bonded to it a microporous material arranged such that the microporous material can allow passage of moisture vapor but prevent passage of droplets in liquid; and a second inner ply including a vapor absorbent material.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: August 29, 1989
    Assignee: Freudenberg Nonwovens Ltd.
    Inventor: Edgar R. Markwell