Patents by Inventor Tara Perrett

Tara Perrett 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).

  • Method of preparing a birefringent polymer film
    Patent number: 10100253
    Abstract: The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electrooptical devices, for decorative or security applications, as alignment layer or optical retardation film.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: October 16, 2018
    Assignee: Merck Patent GmbH
    Inventors: Iain Gardiner, Owain Llyr Parri, Tara Perrett, Joseph Sargent, Jack Bradford, Sarah Whitehouse
  • REACTIVE MESOGENS
    Publication number: 20180148648
    Abstract: The invention relates to lateral fluorinated reactive mesogens (RMs) comprising a tolane group, to mixtures and formulations comprising them, to polymers obtained form such RMs and RM mixtures, and the use of the RMs, RM mixtures and polymers in optical or electrooptical components or devices, like optical films for liquid crystal displays (LCDs).
    Type: Application
    Filed: May 2, 2016
    Publication date: May 31, 2018
    Applicant: Merck Patent GmbH
    Inventors: Graham SMITH, Mark GOEBEL, Kevin ADLEM, Sarah WHITEHOUSE, Tara PERRETT
  • Method of preparing a birefringent polymer film
    Patent number: 9663718
    Abstract: The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electro optical devices, for decorative or security applications, as alignment layer or optical retardation film.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: May 30, 2017
    Assignee: Merck Patent GmbH
    Inventors: Graham Smith, Owain Llyr Parri, Sarah Whitehouse, Tara Perrett
  • METHOD OF PREPARING A BIREFRINGENT POLYMER FILM
    Publication number: 20160244671
    Abstract: The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electro optical devices, for decorative or security applications, as alignment layer or optical retardation film
    Type: Application
    Filed: October 1, 2014
    Publication date: August 25, 2016
    Applicant: Merck Patent GmbH
    Inventors: Graham SMITH, Owain Llyr PARRI, Sarah WHITEHOUSE, Tara PERRETT
  • METHOD OF PREPARING A BIREFRINGENT POLYMER FILM
    Publication number: 20150166892
    Abstract: The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electrooptical devices, for decorative or security applications, as alignment layer or optical retardation film.
    Type: Application
    Filed: May 24, 2013
    Publication date: June 18, 2015
    Applicant: Merck Patent GmbH
    Inventors: Iain Gardiner, Owain Llyr Parri, Tara Perrett, Joseph Sargent, Jack Bradford, Sarah Whitehouse
  • Biaxial film having local birefringence that varies periodically
    Patent number: 7724330
    Abstract: The invention relates to an optically biaxial film comprising an anisotropic material with deformed helically twisted structure and locally varying birefringence, to methods and materials for its preparation, to its uses as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial film.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: May 25, 2010
    Assignee: Merck Patent GmbH
    Inventors: Owain Llyr Parri, Tara Perrett, Kim Slaney, Richard Harding, Mark Verrall, Shirley Ann Marden
  • Polymerisable liquid crystal material
    Patent number: 7597942
    Abstract: The invention relates to a polymerisable liquid crystal (LC) material, to optically biaxial films prepared thereof, to novel polymerisable compounds used therein and to the use of the material and films in optical devices like compensators and LC displays (LCDs).
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: October 6, 2009
    Assignee: Merck Patent GmbH
    Inventors: Alison Linda May, Peter (Fangyun) Hsu, Tara Perrett, Ashley Nathan Smith, Owain Llyr Parri
  • Biaxial film
    Patent number: 7527833
    Abstract: The invention relates to an optically biaxial film with cholesteric structure, methods and materials for its preparation, its use as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial retardation film.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: May 5, 2009
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Kim Slaney, Mark Verrall, Owain Parri, Karl Skjonnemand, Tara Perrett
  • 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
  • Polymerisable Liquid Crystal Material
    Publication number: 20080143943
    Abstract: The invention relates to a polymerisable liquid crystal (LC) material, to optically biaxial films prepared thereof, to novel polymerisable compounds used therein and to the use of the material and films in optical devices like compensators and LC displays (LCDs).
    Type: Application
    Filed: August 10, 2005
    Publication date: June 19, 2008
    Inventors: Alison Linda May, Peter (Fangyun) Hsu, Tara Perrett, Ashley Smith, Owain Parri
  • Biaxial Film Having Local Birefringence That Varies Periodically
    Publication number: 20070258024
    Abstract: The invention relates to an optically biaxial film comprising an anisotropic material with deformed helically twisted structure and locally varying birefringence, to methods and materials for its preparation, to its uses as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial film.
    Type: Application
    Filed: June 15, 2005
    Publication date: November 8, 2007
    Applicant: MERCK PATENT GMBH
    Inventors: Owain Parri, Tara Perrett, Kim Slaney, Richard Harding, Mark Verrall, Shirley Marden
  • NEGATIVE RETARDATION FILM
    Publication number: 20070242190
    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: Application
    Filed: June 5, 2007
    Publication date: October 18, 2007
    Inventors: Karl SKJONNEMAND, Owain Parri, Donald Graham, Tara Perrett
  • Compensator comprising a positive and negative birefringent retardation film
    Patent number: 7283188
    Abstract: The invention relates to a compensator comprising a positive and a negative birefringent retardation film, its use in displays and optical elements, and to displays comprising such a compensator.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: October 16, 2007
    Assignees: Merck Patent GmbH, LG Chemical Ltd.
    Inventors: Jeong Su Yu, Sergey Vasilyevich Belyaev, Byoung Kun Jeon, Karl Skjonnemand, Tara Perrett, Owain Parri
  • Negative retardation film
    Publication number: 20050259200
    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: Application
    Filed: July 11, 2003
    Publication date: November 24, 2005
    Applicant: Merck Patent GmbH
    Inventors: Karl Skjonnemand, Owain Parri, Donald Graham, Tara Perrett
  • Biaxial film
    Publication number: 20050219447
    Abstract: The invention relates to an optically biaxial film with cholesteric structure, methods and materials for its preparation, its use as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial retardation film.
    Type: Application
    Filed: November 6, 2002
    Publication date: October 6, 2005
    Inventors: Kim Slaney, Mark Verrall, Owain Parri, Karl Skjonnemand, Tara Perrett
  • Compensator comprising a positive and negative birefringent retardation film
    Publication number: 20040051831
    Abstract: The invention relates to a compensator comprising a positive and a negative birefringent retardation film, its use in displays and optical elements, and to displays comprising such a compensator.
    Type: Application
    Filed: May 19, 2003
    Publication date: March 18, 2004
    Applicants: Merck Patent GmbH, LG Chemical Ltd.
    Inventors: Jeong Su Yu, Sergey Vasilyevich Belyaev, Byoung Jeon, Karl Skjonnemand, Tara Perrett, Owain Parri