Patents by Inventor Hannah Sallie Robertson McCann

Hannah Sallie Robertson McCann 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 3-isochromanone
    Patent number: 6207840
    Abstract: 3-Isochromanone is prepared by contacting an o-xylene-&agr;,&agr;′-dihalide with carbon monoxide in a two-phase liquid medium, in which one phase is aqueous and the other phase is water-immiscible, in the presence of a catalyst and a hindered amine base.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: March 27, 2001
    Assignee: ZENECA Limited
    Inventors: David John Ritchie, Hannah Sallie Robertson McCann, Jennifer Ann White, Kirstin MacCormick, Raymond Vincent Heavon Jones, Robin Fieldhouse
  • Process for preparing 3-isochromanone
    Patent number: 6184392
    Abstract: 3-Isochromanome is prepared by reacting an o-xylene-&agr;,&agr;′-dihalide with carbon monoxide and water in the presence of a metal catalyst such that the pH of the reaction is maintained between about 7 and 11.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: February 6, 2001
    Assignee: Zeneca Limited
    Inventors: Hannah Sallie Robertson McCann, Raymond Vincent Heavon Jones
  • One-step process for preparing methyl 2-(halomethyl)phenylacetate from 3-isochromanone
    Patent number: 6048998
    Abstract: Methyl 2-(chloro- or bromomethyl)phenylacetate is prepared by treating 3-isochromanone with thionyl chloride or thionyl bromide in the presence of methanol.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: April 11, 2000
    Assignee: Zeneca Limited
    Inventors: David John Ritchie, Hannah Sallie Robertson McCann, Michael Charles Henry Standen, Raymond Vincent Heavon Jones