Patents by Inventor Marc Leng

Marc Leng 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).

  • Liquid-crystalline medium
    Patent number: 6908645
    Abstract: The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the general formula I in which R1, L1, L2, L3, L4, L5, L6, Z1, Z2, X, v and u are as defined in claim 1.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: June 21, 2005
    Assignee: Merck Patent GmbH
    Inventors: Peer Kirsch, Marc Lenges, Michael Heckmeier
  • Liquid-crystalline medium
    Publication number: 20040075081
    Abstract: The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the general formula I 1
    Type: Application
    Filed: September 30, 2003
    Publication date: April 22, 2004
    Inventors: Peer Kirsch, Marc Lenges, Michael Heckmeier
  • Liquid-crystalline compounds
    Patent number: 6723866
    Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, A1, A2, Z1, Z2, a, b, L1, L2 and L3 are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: April 20, 2004
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Peer Kirsch, Michael Heckmeier, Joachim Krause, Marc Lenges, Gerald Unger
  • Liquid-crystalline compounds
    Publication number: 20030216554
    Abstract: The invention relates to liquid-crystalline compounds of the formula I 1
    Type: Application
    Filed: July 25, 2002
    Publication date: November 20, 2003
    Applicant: Merck Patent GmbH
    Inventors: Peer Kirsch, Michael Heckmeier, Joachim Krause, Marc Lenges, Gerald Unger
  • Probe containing a modified nucleic acid recognizable by specific antibodies and use of this probe to detect and characterize a homologous dna sequence
    Patent number: 5098825
    Abstract: A method and kit for detecting a predetermined nucleotide sequence in a specimen using a nucleic acid probe modified with N-2-acetylaminofluorene (AAF).
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: March 24, 1992
    Assignee: Institut Pasteur
    Inventors: Paul Tchen, Philip Kourilsky, Marc Leng, Anne B. Cami