Patents by Inventor Wolfgang Stach

Wolfgang Stach 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).

  • Process for the purification and recovery of formate-dehydrogenase (FDH) from Candida boidinii, and FDH-containing product
    Patent number: 4879234
    Abstract: The invention relates to a process for the purification and, if desired, recovery of formate-dehydrogenase (FDH) from Candida boidinii, in which FDH is subjected to a phase distribution in an aqueous 2-phase system that contains a triazine dyestuff that is bonded to an inert water-soluble polymer.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: November 7, 1989
    Assignee: Gesellschaft fur Biotechnologische Forschung mbH (GBF)
    Inventors: Arno Cordes, Maria-Regina Kula, Karl-Heinz Kroner, Wolfgang Stach
  • Process for the separation of enzymes
    Patent number: 4144130
    Abstract: A process for the recovery of enzymes from intact cells and cell fragments by means of partition in a multiphase system without prior separation of the cell liquid, cell fragments or the cells is described.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: March 13, 1979
    Assignee: Gesellschaft fur Biotechnologische Forschung
    Inventors: Maria-Regina Kula, Karl-Heinz Kroner, Wolfgang Stach, Helmut Hustedt, Andija Durekovic, Stefica Grandja