Patents by Inventor Donald Gordon Graham

Donald Gordon Graham 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).

  • Reactive mesogenic compounds and mixtures
    Patent number: 8455563
    Abstract: The invention relates to new reactive mesogenic compounds (RM), polymerisable liquid crystal (LC) mixtures and polymers comprising them, and the use of the compounds, mixtures and polymers in optical, electrooptical, electronic, semiconducting or luminescent components or devices, in decorative, security or cosmetic applications, especially for use in polymer films having high optical dispersion.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: June 4, 2013
    Assignee: Merck Patent GmbH
    Inventors: Owain Llyr Parri, Donald Gordon Graham, Alison Linda May
  • REACTIVE MESOGENIC COMPOUNDS AND MIXTURES
    Publication number: 20110178200
    Abstract: The invention relates to new reactive mesogenic compounds (RM), polymerisable liquid crystal (LC) mixtures and polymers comprising them, and the use of the compounds, mixtures and polymers in optical, electrooptical, electronic, semiconducting or luminescent components or devices, in decorative, security or cosmetic applications, especially for use in polymer films having high optical dispersion.
    Type: Application
    Filed: December 22, 2008
    Publication date: July 21, 2011
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Owain Llyr Parri, Donald Gordon Graham, Alison Linda May
  • LC material with homeotropic alignment
    Patent number: 7648646
    Abstract: The invention relates to a liquid crystal (LC) material that aligns homeotropically on substrates with high or low surface energy.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: January 19, 2010
    Assignee: Merck Patent Gesellschaft
    Inventors: Richard Harding, Matthew Francis, Owain Llyr Parri, Donald Gordon Graham, Shirley Ann Marden
  • Negative retardation film
    Patent number: 7477343
    Abstract: The invention relates to a negative birefringent retardation film comprising polymerised liquid crystal (LC) material with helically twisted structure and planar orientation, its use in compensators and electrooptical displays like liquid crystal displays, and to compensators and liquid crystal displays comprising such a negative retardation film.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: January 13, 2009
    Assignee: Merck Patent GmbH
    Inventors: Karl Skjonnemand, Owain Llyr Parri, Donald Gordon Graham, Tara Perrett
  • Lc Material with Homeotropic Alignment
    Publication number: 20080316418
    Abstract: The invention relates to a liquid crystal (LC) material that aligns homeotropically on substrates with high or low surface energy.
    Type: Application
    Filed: May 16, 2006
    Publication date: December 25, 2008
    Inventors: Richard Harding, Matthew Francis, Owain Llyr Parri, Donald Gordon Graham, Shirley Ann Marden
  • Process for preparing films of polymerized liquid crystal material having a first film of a polymerized liquid crystal material with uniform orientation and a second film of a polymerized liquid crystal material with uniform orientation directly on the first film
    Patent number: 6995825
    Abstract: The invention relates to a process of preparing films and multilayers comprising polymerized liquid crystal material with uniform orientation, to films and multilayers obtained by said process and their use for optical and electrooptical applications.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: February 7, 2006
    Assignee: Merck Patent GmbH
    Inventors: Donald Gordon Graham, Owain Llyr Parri
  • Birefringement film containing liquid crystal material having multi domains with splayed structure
    Patent number: 6924861
    Abstract: A birefringent film comprising at least one birefringent layer of liquid crystal material forming multi domains with a splayed structure may be coated onto a reflective substrate, e.g., with an aluminium surface. The birefringent film is particularly suited for decorative, security, authentification or identification applications.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: August 2, 2005
    Assignee: Merck Patent GmbH
    Inventors: Robert Hammond-Smith, John Patrick, Donald Gordon Graham
  • Process of preparing films comprising polymerized liquid crystal material
    Publication number: 20040263736
    Abstract: The invention relates to a process of preparing films and multilayers comprising polymerized liquid crystal material with uniform orientation, to films and multilayers obtained by said process and their use for optical and electrooptical applications.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 30, 2004
    Inventors: Donald Gordon Graham, Owain Llyr Parri
  • Birefringent film and its use
    Publication number: 20030178609
    Abstract: A birefringent film comprising at least one birefringent layer of liquid crystal material forming multi domains with a splayed structure may be coated onto a reflective substrate, e.g., with an aluminium surface. The birefringent film is particularly suited for decorative, security, authentification or identification applications.
    Type: Application
    Filed: February 5, 2003
    Publication date: September 25, 2003
    Applicant: Merck Patent GmbH
    Inventors: Robert Hammond-Smith, John Patrick, Donald Gordon Graham