Patents by Inventor Carl R. Towns

Carl R. Towns 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).

  • Polymers, their preparation and uses
    Patent number: 11183648
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: November 23, 2021
    Assignees: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • POLYMERS, THEIR PREPARATION AND USES
    Publication number: 20160343961
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 24, 2016
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • Polymers, their preparation and uses
    Patent number: 9419233
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: August 16, 2016
    Assignees: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • POLAR SEMICONDUCTOR HOLE TRANSPORTING MATERIAL
    Publication number: 20120217490
    Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 30, 2012
    Applicants: CDT OXFORD LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Carl R. Towns, Caroline Towns, Mary J. McKiernan, Annette Steudel
  • Polar semiconductor hole transporting material
    Patent number: 8173996
    Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: May 8, 2012
    Assignees: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Carl R. Towns, Caroline Towns, legal representative, Mary J. McKiernan, Annette Steudel
  • Optical Devices and Their Manufacture
    Publication number: 20100230659
    Abstract: A process for the preparation of a polymerizable unit for production of a hole transporting polymer for use in an optical device, which process comprises reacting in the presence of S to form wherein each R is the same or different and is independently H or a substituent group; n is O or an integer from 1 to 100; Ar and Ar? are the same or different and are each aromatic or heteroaromatic groups which are substituted or unsubstituted; Y is a direct bond, a light emissive moiety, a hole transporting moiety or an electron transporting moiety; and X is a polymerizable group.
    Type: Application
    Filed: December 23, 2005
    Publication date: September 16, 2010
    Applicant: Cambridge Display Technology
    Inventors: Carl R. Towns, Caroline Towns
  • Opto-Electrical Devices and Methods of Making the Same
    Publication number: 20100133566
    Abstract: An opto-electrical device comprising: a first electrode for injecting charge carriers of a first polarity; a second electrode for injecting charge carriers of a second polarity; and a layer of organic material disposed between the first and second electrodes, the layer of organic material comprising a blend of a first charge transporting and/or light-emissive polymer and a second charge transporting and/or light-emissive polymer, wherein at least the first polymer is cross-linked providing a first cross-linked matrix in which the second polymer is disposed.
    Type: Application
    Filed: October 9, 2007
    Publication date: June 3, 2010
    Applicants: CDT OXFORD LTD., SUMATION CO. LTD.
    Inventors: Carl R. Towns, Caroline Towns, Ilaria Grizzi
  • Opto-Electrical Polymers and Devices
    Publication number: 20090322213
    Abstract: A polymer for use in an opto-electrical device comprising aromatically conjugated repeat units of optionally substituted 9,9-dimethylfluorene.
    Type: Application
    Filed: April 19, 2007
    Publication date: December 31, 2009
    Applicant: CDT OXFORD LIMITED
    Inventors: Ilaria Grizzi, Carl R. Towns, Caroline Towns, Natasha Conway
  • Polar semiconductor hole transporting material
    Publication number: 20090152531
    Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.
    Type: Application
    Filed: October 11, 2005
    Publication date: June 18, 2009
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LTD, CDT OXFORD LTD.
    Inventors: Carl R. Towns, Caroline Towns, Mary J. McKiernan, Annette Steudel
  • Polymers, their preparation and uses
    Patent number: 6512082
    Abstract: A polymer which comprises triarylamine units, which polymer comprises one or more structural units comprising Arh-NAr2, where Arh comprises a substituted or unsubstituted heteroaryl group and each Ar is the same or different and comprises a substituted or unsubstituted aryl or heteroaryl group and excluding the copolymer where the polymer backbone contains one or more divinylenearylene units.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: January 28, 2003
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Carl R. Towns, Richard O'Dell
  • Display devices
    Patent number: 6498049
    Abstract: A method for forming a display device, comprising: depositing a thin-film transistor switch circuit on a substrate; depositing by ink-jet printing an electrode layer of light transmissive conductive organic material in electrical contact with the output of the thin-film transistor circuit; and depositing an active region of the device over the electrode layer.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: December 24, 2002
    Assignees: Cambridge Display Technology, Seiko Epson Corporation
    Inventors: Richard H. Friend, Carl R. Towns, Julian C. Carter, Stephen K. Heeks, Hermann F. Wittman, Karl Pichler, Ichio Yudasaka
  • Polymers, their preparation and uses
    Publication number: 20010037012
    Abstract: A polymer which comprises triarylamine units, which polymer comprises one or more structural units comprising Arh-NAr2, where Arh comprises a substituted or unsubstituted heteroaryl group and each Ar is the same or different and comprises a substituted or unsubstituted aryl or heteroaryl group and excluding the copolymer where the polymer backbone contains one or more divinylenearylene units.
    Type: Application
    Filed: January 4, 2001
    Publication date: November 1, 2001
    Inventors: Carl R. Towns, Richard O'Dell