Patents by Inventor Alan Charles Barker

Alan Charles Barker 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).

  • Chemical process
    Publication number: 20040101864
    Abstract: A process for the preparation of a salt of 5-phenylpentanoyl-(S)-arginyl-(S)-alanyl-{(S)-2-[(R)-3-amino-2-oxopyrrolidin-1-yl]propionyl}-(S)-alanyl-(S)-arginyl-(S)-alanyl-4-aminophenylacetamide (SEQ ID NO: 1) which comprises deprotection of a compound of the formula II or a salt thereof: wherein Pg and R1 are defined in the description. Also claimed are intermediates used in the process and the processes for the preparation of the intermediates.
    Type: Application
    Filed: June 24, 2003
    Publication date: May 27, 2004
    Applicant: AtraZeneca AB
    Inventors: Nigel Phillip Taylor, Kevin William Leslie, Phillip John Hogan, Francis Joseph Montgomery, Edward John Bush, Kay Alison Boardman, Claire Ingrid Pulling, Alan Charles Barker
  • Manufacture of tetramisole
    Patent number: 4070363
    Abstract: Process for the manufacture of 2-imino-3-(2-chloro-2-phenylethyl)thiazolidine (known intermediate in manufacture of the anthelmintic agent tetramisole) by reacting 2-imino-3-(2-hydroxy-2-phenylethyl)thiazolidine with chlorosulphonic acid and either aqueous hydrochloric acid or water. Preferred procedure involves use of chlorosulphonic acid and concentrated hydrochloric acid.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: January 24, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Alan Charles Barker, Peter Fulton Southern