Patents by Inventor Charles Eric Pearce

Charles Eric Pearce 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).

  • Hydroentangled filter media and method
    Patent number: 7381669
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2% . The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: June 3, 2008
    Assignee: Polymer Group, Inc.
    Inventors: Charles Eric Pearce, Sergio DeLeon, Michael Putnam, Cheryl Carlson, Ping Hao
  • Hydroentangled filter media and method
    Patent number: 7015158
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 21, 2006
    Assignee: Polymer Group, Inc.
    Inventors: Charles Eric Pearce, Sergio de Leon, Michael Putnam, Cheryl Carlson, Ping Hao
  • Hydroentangled filter media and method
    Publication number: 20020187703
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Application
    Filed: January 16, 2002
    Publication date: December 12, 2002
    Inventors: Charles Eric Pearce, Sergio de Leon, Michael Putnam, Cheryl Carlson, Ping Hao