Patents by Inventor Colin Leslie Hewett

Colin Leslie Hewett 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: 4107206
    Abstract: The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, IN WHICHR.sub.1 and R.sub.2 stand for hydroge, alkyl or alkenyl, an optionally substituted aralkyl group or an acyl group orR.sub.1 + r.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, andX and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, trifluoromethyl or an acyloxy group,Which compounds have valuable biological activities, particularly anorectic activity.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: August 15, 1978
    Assignee: Akzona Incorporated
    Inventors: Colin Leslie Hewett, David Samuel Savage
  • Patent number: 4008277
    Abstract: The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, in which R.sub.1 and R.sub.2 stand for hydrogen, alkyl or alkenyl, an optionally substituted aralkyl group or an acyl group orR.sub.1 + r.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, andX and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, trifluoromethyl or an acyloxy group,Which compounds have valuable biological activities, particularly anorectic activity.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: February 15, 1977
    Assignee: Akzona Incorporated
    Inventors: Colin Leslie Hewett, David Samuel Savage