Patents by Inventor Ion Neda

Ion Neda 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).

  • Phosphite compounds and the metal complexes thereof
    Patent number: 7009068
    Abstract: Phosphites of the formula I or II and their metal complexes, their preparation and the use of the phosphites as ligands in catalytic reactions, in particular in processes for the hydroformylation of olefins, are described.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: March 7, 2006
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Reinhard Schmutzler, Ion Neda, Christine Kunze, Armin Börner, Detlef Selent, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • Novel phosphite compunds and the metal complexes thereof
    Publication number: 20040236134
    Abstract: Phosphites of the formula I or II 1
    Type: Application
    Filed: June 15, 2004
    Publication date: November 25, 2004
    Inventors: Reinhard Schmutzler, Ion Neda, Christine Kunze, Armin Borner, Detlef Selent, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • Process for the preparation of oxazaphosphorine-2-amines
    Publication number: 20030109737
    Abstract: A process for the preparation of oxazaphosphorine-2-amines of the formula (I) described by the reaction scheme 1
    Type: Application
    Filed: January 8, 2003
    Publication date: June 12, 2003
    Inventors: Ulf Niemeyer, Harald Niegel, Bernhard Kutscher, Ion Neda
  • Process for the preparation of oxazaphosphorine-2-amines
    Publication number: 20010047103
    Abstract: A process for the preparation of oxazaphosphorine-2-amines of the formula (I) described by the reaction scheme 1
    Type: Application
    Filed: December 7, 2000
    Publication date: November 29, 2001
    Applicant: Asta Medica Aktiengesellschaft
    Inventors: Ulf Niemeyer, Harald Niegel, Bernhard Kutscher, Ion Neda
  • Process for the preparation of oxazaphosphorine-2-amines
    Patent number: 6187941
    Abstract: A process for the preparation of oxazaphosphorine-2-amines of the formula (I) described by the reaction scheme in which R1 is H, 2-bromoethyl, 2-chloroethyl, 2-hydroxyethyl, 2-mesyloxyethyl or 1-phenylethyl; R2 is H or 2-chloroethyl; R3 is H, 2-bromoethyl, 2-chloroethyl or 1-phenylethyl; and R4 is H; or R1 and R2, and also R3 and R4, together with the linked N atom, form an aziridide ring, where R1, R2 and R3 are not simultaneously H, and R1 and R3 are not simultaneously 1-phenylethyl; and Y, which is optionally present, is hydrogen chloride or hydrogen bromide. The reaction is carried out in a single vessel with phosphoryl chloride and an auxiliary base as an acid-binding agent with minimization of the effect of water and without isolation of an intermediate compound.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: February 13, 2001
    Assignee: Asta Medica Aktiengesellschaft
    Inventors: Ulf Niemeyer, Harald Niegel, Bernard Kutscher, Ion Neda