Patents by Inventor Annnette Bollman

Annnette Bollman 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).

  • Trimerisation and oligomerisation of olefins using a chromium based catalyst
    Publication number: 20050131262
    Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least 2 heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 16, 2005
    Inventors: John Dixon, Peter Wasserscheid, David McGuinness, Fiona Hess, Hulisani Maumela, David Morgan, Annnette Bollman