Patents Assigned to Biochemie GmbH
  • Enzymatic methods of preparing polymers from nucleotide and/or non-nucleotide monomers
    Patent number: 6329177
    Abstract: There is described the preparation of polymers from nucleotide and/or non-nucleotide monomers, in particular the preparation of natural and/or base-modified and/or sugar-modified and/or phosphate group-modified oligodeoxyribonucleotides and/or oligoribonucleotides and/or non-nucleotide polymers in an enzymatic manner in 3′→5′ direction using a RNA ligase.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: December 11, 2001
    Assignee: Larova Biochemie GmbH
    Inventor: Roxana Maria Havlina
  • Intermediates and process for the production of 3-vinyl cephalosporins
    Patent number: 6248881
    Abstract: A process for the production of a 3-vinylcephalosporin compound of formula I wherein R1 and R2 may be the same or different and denote hydrogen or an organic radical, which comprises subjecting a 3-iodomethyl-cephalosporin to a Wittig reaction in the presence of a weak base.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: June 19, 2001
    Assignee: Biochemie GmbH
    Inventors: Josef Wieser, Gerd Ascher, Johannes Ludescher, Herbert Sturm
  • Process for separating pivalic acid from spent reaction mixtures
    Patent number: 5990351
    Abstract: A process for recovering 2,2-dimethylpropanoic acid in highly pure form from a mixture of 2,2-dimethylpropanoic acid and impurities which may be obtained in the production of a beta lactam antibiotic, by degrading impurities and separating off the volatile fragments.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: November 23, 1999
    Assignee: Biochemie GmbH
    Inventors: Joan Cabre, Victor Centellas, Jose Diago, Asuncion Esteve, Joan Serrat