Patents by Inventor Gregory Kardach

Gregory Kardach 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).

  • Vibratory screen assemblies
    Patent number: 7175028
    Abstract: A screen assembly which includes a frame, a plurality of openings in the frame, a screen overlying the openings, a plurality of spaced tapered ribs on the opposite side of the frame from the screen, a first end on the frame with a lip, and a second end on the frame with a clip thereon. Another embodiment has a first end with a ledge and a second end with an overhanging portion, and a seal on the ledge.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: February 13, 2007
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Gregory A. Kardach
  • Vibratory screen assemblies
    Patent number: 7011218
    Abstract: A screen assembly which includes a frame, a plurality of openings in the frame, a screen overlying the openings, a plurality of spaced tapered ribs on the opposite side of the frame from the screen, a first end on the frame with a depending lip, and a second end on the frame with a clip thereon. Another embodiment has a first end with a ledge and a second end with an overhanging portion, and a seal on the ledge.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 14, 2006
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Gregory A. Kardach
  • Vibratory screen assemblies
    Publication number: 20050056571
    Abstract: A screen assembly which includes a frame, a plurality of openings in the frame, a screen overlying the openings, a plurality of spaced tapered ribs on the opposite side of the frame from the screen, a first end on the frame with a lip, and a second end on the frame with a clip thereon. Another embodiment has a first end with a ledge and a second end with an overhanging portion, and a seal on the ledge.
    Type: Application
    Filed: November 5, 2003
    Publication date: March 17, 2005
    Applicant: Derrick Manufacturing Corporation
    Inventors: James Colgrove, Gregory Kardach
  • Vibratory screen assemblies
    Publication number: 20050056570
    Abstract: A screen assembly which includes a frame, a plurality of openings in the frame, a screen overlying the openings, a plurality of spaced tapered ribs on the opposite side of the frame from the screen, a first end on the frame with a depending lip, and a second end on the frame with a clip thereon. Another embodiment has a first end with a ledge and a second end with an overhanging portion, and a seal on the ledge.
    Type: Application
    Filed: August 29, 2003
    Publication date: March 17, 2005
    Inventors: James Colgrove, Gregory Kardach