Patents by Inventor Leopold Cyrille Maria Beirens

Leopold Cyrille Maria Beirens 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).

  • Cathode ray tube with convergence unit
    Patent number: 6888298
    Abstract: The invention relates to a color display device comprising an electron gun (5) for generating three electron beams (6,7,8), and convergence means (14) for dynamically influencing the convergence of the electron beams. The convergence means (14) comprise coils (22) for generating a magnetic field. The coils (22) are provided with an electrically conducting layer.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: May 3, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Dirk Willem Harberts, Leopold Cyrille Maria Beirens, Antonius Henricus Van Tiel
  • Color display device having quadrupole convergence coils
    Patent number: 6608436
    Abstract: A color display device having an in-line electron gun (5) for generating three electron beams (6,7,8), and a convergence unit (14′) to dynamically influence the convergence of the electron beams, preferably to decrease a distance (p) between the electron beams. The convergence unit (14′) includes a ring-shaped element (21′) having coils (22′) formed by electrically conductive wires, which have been toroidally wound in a winding direction and according to a winding density distribution N (&phgr;) given by N (&phgr;)=N0 cos (2&phgr;)+C where &phgr; is an angle enclosed by the X-direction and a line between an element of the coil and the center, which ranges between 0° and 360°, N0 is a given winding density, the sign of N (&phgr;) denotes the winding direction, and C is a constant different from zero, and preferably equal to −N0.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: August 19, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Albertus Aemilius Seyno Sluyterman, Nicolaas Gerrit Vink, Tjerk Gerrit Spanjer, Leopold Cyrille Maria Beirens, Antonius Henricus Van Tiel
  • Cathode ray tube with convergence unit
    Publication number: 20020096987
    Abstract: The invention relates to a color display device comprising an electron gun (5) for generating three electron beams (6,7,8), and convergence means (14) for dynamically influencing the convergence of the electron beams. The convergence means (14) comprise coils (22) for generating a magnetic field. The coils (22) are provided with an electrically conducting layer.
    Type: Application
    Filed: January 17, 2002
    Publication date: July 25, 2002
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Dirk Willem Harberts, Leopold Cyrille Maria Beirens, Antonius Henricus Van Tiel