Patents by Inventor Charles Thomas Paul

Charles Thomas Paul 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).

  • GRADED PARTICLE-SIZE RETENTION FILTER MEDIUM FOR CELL-TYPE FILTER UNIT
    Publication number: 20100264077
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Application
    Filed: June 30, 2010
    Publication date: October 21, 2010
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Graded particle-size retention filter medium for cell-type filter unit
    Publication number: 20040118766
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Application
    Filed: November 4, 2003
    Publication date: June 24, 2004
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Graded particle-size retention filter medium for cell-type filter unit
    Patent number: 6712966
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: March 30, 2004
    Assignee: Cuno Incorporated
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Graded particle-size retention filter medium for cell-type filter unit
    Publication number: 20020060184
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 23, 2002
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan