Patents by Inventor Mark Schiffner

Mark Schiffner 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).

  • Interlocking rig mats
    Patent number: 8870492
    Abstract: A rig mat comprising a downwardly sloping first end comprising a female coupling and extending across a first lateral end of the rig mat and an upwardly sloping second end comprising a male coupling and extending across a second lateral end of the rig mat. Each of the downwardly sloping first end and upwardly sloping second end is in the form of a triangle comprising three angles that total one hundred eighty degrees. The downwardly sloping first end comprises a sloped flat surface and a bottom surface that is level with a bottom surface of the rig mat. The upwardly sloping second end comprises a sloped flat surface and a top surface that is level with a top surface of the rig mat.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 28, 2014
    Assignee: Rig Mats of America, Inc.
    Inventors: Brian Stasiewich, Mark Schiffner
  • INTERLOCKING RIG MATS
    Publication number: 20140199119
    Abstract: A rig mat comprising a downwardly sloping first end comprising a female coupling and extending across a first lateral end of the rig mat and an upwardly sloping second end comprising a male coupling and extending across a second lateral end of the rig mat. Each of the downwardly sloping first end and upwardly sloping second end is in the form of a triangle comprising three angles that total one hundred eighty degrees. The downwardly sloping first end comprises a sloped flat surface and a bottom surface that is level with a bottom surface of the rig mat. The upwardly sloping second end comprises a sloped flat surface and a top surface that is level with a top surface of the rig mat.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Applicant: Rig Mats of America, Inc.
    Inventors: Brian Stasiewich, Mark Schiffner