Patents by Inventor Kees P. De Kloe

Kees P. De Kloe 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).

  • Synthesis of cyclopentadiene derivatives
    Publication number: 20080287692
    Abstract: A compound of formula (X): wherein R1, R2, equal to or different from each other are hydrogen or a linear or branched saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or they can form a C4-C7 ring optionally containing O, S, N, P or Si atoms that can bear substituents; R3 is hydrogen or a linear or branched saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or two adjacent R3 groups can form a C4-C7 ring optionally containing O, S, N, P or Si atoms, wherein said ring can bear substituents; and at least one of R1, R2 or R3 is different from hydrogen.
    Type: Application
    Filed: June 27, 2007
    Publication date: November 20, 2008
    Applicant: Basell Polyolefine GmbH
    Inventors: Ilya E. Nifant'ev, Igor A. Kashulin, Pavel V. Ivchenko, Peter A.A. Klusener, Frans M. Korndorffer, Kees P. de Kloe, Jos J.H. Rijsemus
  • Synthesis of cyclopentadiene derivatives
    Patent number: 7253292
    Abstract: A process for preparing cyclopentadiene derivatives comprising the steps of: a) coupling a five membered heterocycle ring with a five or six membered heterocycle ring; b) reacting the obtained compound with a carbonilating system: c) reducing the obtained compound.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: August 7, 2007
    Assignee: Basell Polyolefine GmbH
    Inventors: Ilya E. Nifant'ev, Igor A Kashulin, Pavel V. Ivchenko, Peter A. A. Klusener, Frans M. Kornorffer, Kees P. De Kloe, Jos J. H. Rijsemus
  • Synthesis of cyclopentadiene derivatives
    Publication number: 20040236115
    Abstract: A process for preparing cyclopentadiene derivatives comprising the steps of: a) coupling a five membered heterocycle ring with a five or six membered heterocycle ring; b) reacting the obtained compound with a carbonilating system: c) reducing the obtained compound.
    Type: Application
    Filed: November 10, 2003
    Publication date: November 25, 2004
    Inventors: Ilya E Nifantev, Igor A. Kashulin, Pavel V. Ivchenko, Peter A.A. Klusener, Frans M. Kornorffer, Kees P. De Kloe, Jos J.H. Rijsemus