Patents by Inventor Elizabeth Shearer Currie Simpson

Elizabeth Shearer Currie Simpson 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 epoxides from carbonyl compounds using sulphonium or sulphoxonium ylides and intermediates useful therein
    Patent number: 5750740
    Abstract: A process for transforming a carbonyl compound into its corresponding epoxide, which comprises contacting the carbonyl compound with either trimethylsulphonium hydrogen sulphate and/or bis(trimethylsulphonium) sulphate or trimethylsulphoxonium hydrogen sulphate and/or bis(trimethylsulphoxonium) sulphate, in the presence of a base.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: May 12, 1998
    Assignee: Zeneca Limited
    Inventors: Raymond Vincent Heavon Jones, Elizabeth Shearer Currie Simpson