Patents by Inventor Paul David Lesson

Paul David Lesson 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).

  • Patent number: 5670522
    Abstract: Fused tricyclic heteroaromatic compounds of formula ##STR1## wherein one of X and Y represents nitrogen, and the other of X and Y represents oxygen, sulphur or N--R.sup.2 ;Q represents a substituted five- or six-membered monocyclic heteroaliphatic ring which contains one nitrogen atom as the sole heteroatom and is linked to the five-membered heteroatomic ring containing the moieties X and Y via a carbon atom: as well as substituted 3,4-dihydro-1-hydroxy-2-oxomethyl-naphthalene precursors thereto, are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment of disorders of the dopamine system, in particular schizophrenia.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: September 23, 1997
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Paul David Lesson, Michael Rowley