Patents by Inventor Marc Henri Carolina Anthonis

Marc Henri Carolina Anthonis 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).

  • Crystalline molecular sieve layers and processes for their manufacture
    Patent number: 6689195
    Abstract: A process is described for the manufacture of crystalline molecular sieve layers with good para-xylene over meta-xylene selectivity's good para-xylene permeances and selectivities. The process requires impregnation of the support prior to hydrothermal synthesis using the seeded method and may be undertaken with pre-impregnation masking. The crystalline molecular sieve layer has a selectivity (&agr;x) for para-xylene over meta-xylene of 2 or greater and a permeance (Qx) for para-xylene of 3.27×10−8 mole(px)/m2.s.Pa(px) or greater measured at a temperature of ≧250° C. and an aromatic hydrocarbon partial pressure of ≧10×103 Pa.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: February 10, 2004
    Inventors: Marc Henri Carolina Anthonis, Anton-Jan Bons, Harry William Deckman, Jonas Hedlund, Wenyih F. Lai, Jacobus Anna Josephus Peters
  • Molecular sieves and processes for their manufacture
    Patent number: 6090289
    Abstract: Structures comprising an upper crystalline molecular sieve layer on a support, the crystals being at least partially oriented normal to the plane of the layer, there being a dense intermediate crystalline molecular sieve layer between the support and upper layer.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: July 18, 2000
    Assignee: Exxon Research & Engineering Co.
    Inventors: Johannes Petrus Verduijn, Antonie Jan Bons, Marc Henri Carolina Anthonis, Lothar Ruediger Czarnetzki, Wilfried Jozef Mortier