Patents Examined by Joann Richter
  • Patent number: 7249599
    Abstract: A method for crystallizing a substance, especially an inhalable medicament, comprising the following steps: (a) dissolving said substance in a solvent, to produce a solution of said substance, (b) producing a segmented stream which consists of alternating segments of said solution of the substance and of a transport medium, (c) introducing said segmented stream into the first end of a retention stretch, which retention stretch has a first end and a second end, so that said segmented stream passes from said first end to said second end of said retention stretch, and exists from the second end of the retention stretch, (d) cooling the retention stretch, to thereby bring about crystallization of the substance in the segments of solution, in the segmented stream, as said segmented stream passes through the retention stretch, and (e) separating the crystals of material from the segmented stream as it exits from the second end of the retention stretch.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: July 31, 2007
    Assignee: Boehringer Ingelheim Pharma GmbH & Co. KG
    Inventors: Joerg Schiewe, Bernd Zierenberg
  • Patent number: 6977312
    Abstract: Novel compounds of phosphorus, of arsenic and of antimony can be used as ligands to form complexes of metals of transition group VIII which can be used in catalysts for hydroformylation, hydrocyanation, carbonylation, hydrogenations, oligomerization and polymerization of olefins and for metathesis.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: December 20, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Ahlers, Michael Röper, Peter Hofmann, Daniel C. M. Warth, Rocco Paciello