Patents by Inventor Derek W. Hills

Derek W. Hills 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).

  • Tetrahydroimidazo(3,4-c)-1,3-diazocine intermediates for production of guanidines
    Patent number: 4443375
    Abstract: This invention relates to a process for preparing imidazolylalkylguanidines, in particular N-[3-(4-imidazolyl)propyl]-N'-[2-(5-methyl-4-imidazolylmethylthio)ethyl]gu anidine (impromidine) which has histamine H.sub.2 -agonist activity, to intermediates for use in this process and to processes for preparing these intermediates.
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: April 17, 1984
    Assignee: Smith Kline & French Laboratories Limited
    Inventors: Derek W. Hills, George R. White
  • 3-,4-Dihydroimidazo (3,4-c)-1,3-pyrimidines and 4,5-dihydroimidazo (3,4-c)-1,3-diazepines
    Patent number: 4375435
    Abstract: This invention relates to a process for preparing imidazolylalkylguanidines, in particular N-[3-(4-imidazolyl)propyl]-N'-[2-(5-methyl-4-imidazolylmethylthio)ethyl]gu anidine (impromidine) which has histamine H.sub.2 -agonist activity, to intermediates for use in this process and to processes for preparing these intermediates.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: March 1, 1983
    Assignee: Smith Kline & French Laboratories Limited
    Inventors: Derek W. Hills, George R. White