Patents by Inventor Jonathan Charles Christian Atherton

Jonathan Charles Christian Atherton 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).

  • Process for preparing purine derivatives
    Patent number: 10927113
    Abstract: The present invention relates to a process for preparing a compound of formula [I], said process comprising the steps of: formula [II]+formula [III]?formula [I] (i) forming a reaction mixture comprising (a) a compound of formula [II], (b) a compound of formula [III] and (c) 1,2-propanediol or polyethylene glycol, or a mixture thereof, and optionally (d) a base; (ii) heating said reaction mixture to a temperature of at least about 150° C.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: February 23, 2021
    Assignee: Cyclacel Limited
    Inventors: Benjamin Mark Skead, Robert Westwood, Derek Londesbrough, Julian Scott Northen, Jonathan Charles Christian Atherton
  • Crystalline forms of a purine derivative
    Patent number: 9573951
    Abstract: The present invention relates to new crystalline forms of a purine derivative which exhibits excellent anti-tumor activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: February 21, 2017
    Assignee: Cyclacel Limited
    Inventors: Benjamin Mark Skead, Christopher Peter Worrall, Jonathan Charles Christian Atherton, Julian Scott Northen, Philippe Fernandes
  • CRYSTALLINE FORMS OF A PURINE DERIVATIVE
    Publication number: 20150148354
    Abstract: The present invention relates to new crystalline forms of a purine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 28, 2015
    Inventors: Benjamin Mark SKEAD, Christopher Peter WORRALL, Jonathan Charles Christian ATHERTON, Julian Scott NORTHEN, Philippe FERNANDES
  • Crystalline forms of a purine derivative
    Patent number: 8889861
    Abstract: The present invention relates to new crystalline forms of a purine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: November 18, 2014
    Assignee: Cyclacel Limited
    Inventors: Benjamin Mark Skead, Christopher Peter Worrall, Jonathan Charles Christian Atherton, Julian Scott Northen, Philippe Fernades
  • CRYSTALLINE FORMS OF A PURINE DERIVATIVE
    Publication number: 20130072504
    Abstract: The present invention relates to new crystalline forms of a purine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Application
    Filed: January 24, 2011
    Publication date: March 21, 2013
    Applicant: CYCLACEL LIMITED
    Inventors: Benjamin Mark Skead, Christopher Peter Worrall, Jonathan Charles Christian Atherton, Julian Scott Northen, Philippe Fernades