Patents by Inventor Mansur Yalpani

Mansur Yalpani 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).

  • Patent number: 4424346
    Abstract: Derivatives have been formed from chitins and chitosans in which the amine residues on the polyglucosamine have been modified to form the groups:(a) --N.dbd.CHR or --NHCH.sub.2 R(b) --NHR'(c) --NHR" and(d) --NH--CH.sub.2 CO.sub.2 H or --NH--glycerylwhereR is an aromatic moiety having at least one hydroxyl or carboxyl group, or a macrocyclic ligandR' is an aldose or ketose residue, and,R" is an organometallic aldehyde residue.These derivatives are useful in chelating metals, in pharmaceutical formulations, in cosmetics, in chromatographic separations, in enzyme immobilization, as catalysts, etc. Galactomannans having selected amine-containing side chains have also been prepared by reductive amination.
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: January 3, 1984
    Assignee: Canadian Patents and Development Ltd.
    Inventors: Laurance D. Hall, Mansur Yalpani