Patents by Inventor Peter Nyman

Peter Nyman 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 of aldehyde impurities
    Patent number: 6448371
    Abstract: A novel process for the purification of poloxamers which contain aldehyde impurities, and particularly for the purification of the poloxamers named poloxamer 188 and poloxamer 407, which process includes dissolving the poloxamer(s) in a solvent which solvent may optionally contain an acid or a mixture of acids; if the solvent in which the poloxamer(s) has been dissolved is free from acid, acid is added; whereafter the aldehydes are removed.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 10, 2002
    Assignee: Maillefer Instruments Trading S.a.r.l.
    Inventors: Mats Berg, Alf Djurle, Magnus Melin, Peter Nyman