Patents by Inventor Heike Gregorius

Heike Gregorius 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).

  • Method for selective production of racemic metallocene complexes
    Patent number: 6262286
    Abstract: Racemic metallocene complexes are prepared by reacting bridged or unbridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and, if desired, subsequently replacing the aromatic ligands.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: July 17, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Heike Gregorius, Carsten Süling, Wolfgang Bidell, Hans-Herbert Brintzinger, Hans-Robert-Hellmuth Damrau, Armin Weber
  • Polymers of propene
    Patent number: 6248829
    Abstract: Polymers of propene consist of from 50 to 99.9% by weight of an isotactic propene copolymer (A′) and from 0.1 to 50% by weight of a propene homopolymer or a propene copolymer (B′), where a) the propene copolymer (A′) consists of from 80 to 99.9 mol % of propene and from 0.1 to 20 mol % of ethene and/or a C4-C12-1-olefin, at least 80% of all propene diads are isotactic meso diads, the propene copolymer (A′) has a proportion (XS) of material soluble in xylene at 20° C. which satisfies the inequality (1) (XS)<542 400 exp (−0.1TM)+0.5  (1),  the tensile modulus of elasticity (E) of the propene copolymer (A′) in MPa, determined in accordance with ISO 527, obeys the inequality (2) (E)>1.9×10−11(TM)6.34+180 MPa  (2),  where in both inequalities (1) and (2) TM is the melting point in ° C.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: June 19, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: David Fischer, John Russell Grasmeder, Heike Gregorius, Stefan Seelert, Franz Langhauser, Wolfgang Micklitz, Klaus-Dieter Rümpler
  • Process for producing substituted indanones
    Patent number: 6245944
    Abstract: A process for preparing a compound of the formula I where R1 and R2 are hydrogen or C1-C4-alkyl and R3 is C1-C10-alkyl, phenyl or C1-C4-alkyl-substituted phenyl, comprises reacting a compound II with a compound of the formula III where X is chlorine, bromine or iodine, in the presence of a Friedel-Crafts catalyst in one step to give a compound I.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: June 12, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Carsten Süling, Heike Gregorius, Walter Dobler, Roland Hingmann, Bernhard Rieger, Ulf Dietrich, Jürgen Matthäus Wagner, Hans-Joachim Müller