Patents by Inventor Antonius M. J. H. Seuter

Antonius M. J. H. Seuter 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).

  • Low-pressure mercury vapor discharge lamp
    Patent number: 4544997
    Abstract: A low-pressure mercury vapor discharge lamp comprising a glass discharge envelope (1) in which during operation of the lamp a discharge is present and which contains mercury and a rare gas, at least a part of the inner wall of the discharge envelope being provided with a thin at least substantially homogeneous continuous transparent layer (4) which is resistent to the action of the discharge.According to the invention, this transparent layer (4) contains an oxide of at least one of the groups comprising yttrium, scandium, lanthanum, gadolinium, ytterbium and lutetium.
    Type: Grant
    Filed: June 22, 1983
    Date of Patent: October 1, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Antonius M. J. H. Seuter, Petrus F. J. van den Boom
  • Luminescent bivalent europium-activated barium borophosphate and discharge lamp containing the same
    Patent number: 4185222
    Abstract: Luminescent bivalent europium-activated barium borophosphates having defined compositions by the formula Ba.sub.3-p Eu.sub.p BP.sub.3 O.sub.12, where 0.01.ltoreq.p.ltoreq.0.50. A quantity of not more than 20 mole % of the Ba may be replaced by Sr and/or Ca. The borophosphate can be used in luminescent screens of low-pressure mercury vapour discharge lamps.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: January 22, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Petrus F. J. van den Boom, Antonius M. J. H. Seuter
  • Luminescent materials and discharge lamp containing the same
    Patent number: 4151443
    Abstract: A luminescent material having the eulytine crystal structure and a composition defined by Ca.sub.3-x-y-p Me.sub.x Sn.sub.p Ln.sub.1+y-q-r A.sub.q Sb.sub.r (PO.sub.4).sub.3-y (SiO.sub.4).sub.y, wherein Me is Sr and/or Ba, Ln is Y, La, Gd and/or Lu, and A is Ce and/or Tb and wherein 0.ltoreq.x.ltoreq.2.5, 0.ltoreq.y.ltoreq.0.5, 0.ltoreq.P.ltoreq.0.2, x+y+p.ltoreq.2.5, 0.ltoreq.q.ltoreq.1+y-r, 0.ltoreq.r.ltoreq.0.5, p+q+r.noteq.0.
    Type: Grant
    Filed: August 24, 1978
    Date of Patent: April 24, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Petrus F. J. VAN DEN Boom, Antonius M. J. H. Seuter