Patents Assigned to Merck Patent Geselleschaft mit beschranhkter Haftung
  • Direactive mesogenic compounds and intermediates
    Patent number: 6475574
    Abstract: The present invention generally relates to a direactive compound which is of the formula IV A R1—(CH2)mO—MG—O—(CH2)n—R2  (IVA) wherein R1, R2, m, n, and MG are defined herein.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: November 5, 2002
    Assignee: Merck Patent Geselleschaft mit beschranhkter Haftung
    Inventors: David Coates, Simon Greenfield
  • Method for removing initiators from grafting products
    Patent number: 6465600
    Abstract: The present invention relates to a process for removing an initiator of cerium (IV) salt from a graft product. The process may include washing the graft product with a mineral acid solution comprising ascorbic acid.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: October 15, 2002
    Assignee: Merck Patent Geselleschaft mit beschranhkter Haftung
    Inventors: Lothar Britsch, Egbert Müller, Josef-Stefan Stöhr