Patents by Inventor Andreas Kreimeyer

Andreas Kreimeyer 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 concentrating and purifying hirudin from leeches
    Patent number: 5304310
    Abstract: A method for the concentration and purification of biomolecules is described and comprises introducing the biomolecule into an aqueous/organic solvent system and bringing about a phase separation by addition of salts, where the pH at which the concentration takes place, the solvents suitable for the aqueous/organic solvent system, and the nature of the salt are determined in a series of tests one embodiment concerns concentration of hirudin by using propanol, butanol or acetone a the solvent and sodium chloride as the salt.
    Type: Grant
    Filed: July 19, 1992
    Date of Patent: April 19, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Lang, Andreas Kreimeyer
  • Substantially purified proteolytic enzyme from Bacillus spec. USNI 4828 method of making and using it
    Patent number: 5143840
    Abstract: A substantially purified proteolytic enzyme isolated from a culture of Bacillus spec. DSM 4828 which has a molecular weight of 27,000 daltons, an optimum pH of 12, an optimal temperature of 60.degree. C. and which can be used in a detergent composition.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: September 1, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Hansjoerg Rettenmaier, Andreas Kreimeyer, Johannes Perner, Paul Diessel