Patents by Inventor Johannes M van Oort

Johannes M van Oort 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).

  • Mold for bonding MRI pole piece tiles and method of making the mold
    Patent number: 6429761
    Abstract: A laminate tile pole piece for an MRI, a method and a mold for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: August 6, 2002
    Assignee: General Electric Company
    Inventors: Evangelos T. Laskaris, William D. Barber, Johannes M van Oort, Bulent Aksel, Paul S. Thompson, Michele D. Ogle
  • Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles
    Patent number: 6259252
    Abstract: A laminate tile pole piece for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: July 10, 2001
    Assignee: General Electric Company
    Inventors: Evangelos T. Laskaris, William D. Barber, Johannes M van Oort, Bulent Aksel, Paul S. Thompson, Michele D. Ogle
  • Mold for bonding MRI pole piece tiles and method of making the mold
    Publication number: 20010005165
    Abstract: A laminate tile pole piece for an MRI, a method and a mold for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 28, 2001
    Inventors: Evangelos T. Laskaris, William D. Barber, Johannes M. van Oort, Bulent Aksel, Paul S. Thompson, Michele D. Ogle