Patents by Inventor Richard Alexander Evans

Richard Alexander Evans 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).

  • Ring opening monomers
    Patent number: 5665839
    Abstract: Compound of the Formula 1 ##STR1## wherein: R.sup.1 and R.sup.2 are independently selected from the group comprising hydrogen, C.sub.1 to C.sub.6alkyl, C.sub.1 to C.sub.6 haloalkyl, phenyl, and substituted phenyl;X is selected from the group comprising sulfur, sulphone, disulfide;Y is selected from oxygen, carbon, N--H, N-alkyl, N-aryl, or sulfur; andZ is any linking functionality.The compounds represent a new class of ring opening monomers.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: September 9, 1997
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Ezio Rizzardo, Richard Alexander Evans, Graeme Moad, San Hoa Thang