Patents by Inventor Michael Peter Lear Caton

Michael Peter Lear Caton 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).

  • Cyclopentane derivatives
    Patent number: 4045467
    Abstract: Cyclopentane derivatives of the formula: ##STR1## (wherein the R symbols represent hydrogen or alkyl, n represents 4 or 6, and the symbols A, B, X and Y have any one of the following combinations: (a) A represents methylene, B represents hydroxymethylene, X represents ethylene and Y represents hydroxymethylene; (b) A represents carbonyl, B represents methylene, X represents ethylene or trans-vinylene and Y represents hydroxymethylene or carbonyl; or (c) A represents hydroxymethylene, B represents methylene, X represents ethylene or trans-vinylene and Y represents hydroxymethylene) are new compounds, possessing pharmacological properties, in particular, the production of hypotension, bronchodilatation, inhibition of gastric acid secretion and stimulation of uterine contraction.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: August 30, 1977
    Assignee: May & Baker Limited
    Inventors: Michael Peter Lear Caton, Trevor Parker
  • Cyclopentane derivatives
    Patent number: 4036872
    Abstract: Cyclopentane derivatives of the formula: ##STR1## wherein R.sup.1 represents alkyl of 1 through 4 carbon atoms, R.sup.2 represents hydrogen or alkyl of 1 through 3 carbon atoms, R.sup.3 represents alkoxy of 3 through 6 carbon atoms, or alkoxyalkyl in which alkoxy and alkyl moieties each contain 1 through 4 carbon atoms, R.sup.4 represents hydrogen or alkyl of 1 through 12 carbon atoms, R.sup.5 represents hydrogen or alkyl of 1 through 4 carbon atoms or a carboxylic acyl group, A represents carbonyl or a group --CH(OR.sup.5)-- wherein R.sup.5 is as hereinbefore defined, and X represents ethylene or trans-vinylene, possess pharmacological properties, for example the production of hypotension, broncodilation, inhibition of gastric acid secretion, and stimulation of uterine contraction.
    Type: Grant
    Filed: November 12, 1974
    Date of Patent: July 19, 1977
    Assignee: May & Baker Limited
    Inventors: Michael Peter Lear Caton, Edward Charles John Coffee, Gordon Leonard Watkins
  • Cyclopentane derivatives
    Patent number: 3935261
    Abstract: Cyclopentane derivatives of the prostaglandin type of the formula: ##SPC1##(wherein R.sup.1 represents hydrogen or lower alkyl, R.sup.2 represents alkyl of 1 to 10 carbon atoms, the symbols R.sup.3 are the same and represent hydrogen, lower alkyl, lower alkenyl, phenyl(lower)alkyl or lower alkanoyl, R.sup.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: January 27, 1976
    Assignee: May & Baker Limited
    Inventors: Michael Peter Lear Caton, Edward Charles John Coffee, Gordon Leonard Watkins
  • 10,11,15-Trihydroxyprostanoic acid
    Patent number: 3933890
    Abstract: Cyclopentane derivatives of the formula: ##SPC1##(wherein the R symbols represent hydrogen or alkyl, n represents 4 or 6, and the symbols A, B, X and Y have any one of the following combinations: (a) A represents methylene, B represents hydroxymethylene, X represents ethylene and Y represents hydroxymethylene; (b) A represents carbonyl, B represents methylene, X represents ethylene or trans-vinylene and Y represents hydroxymethylene or carbonyl; or (c) A represents hydroxymethylene, B represents methylene, X represents ethylene or trans-vinylene and Y represents hydroxymethylene) are new compounds, possessing pharmacological properties, in particular, the production of hypotension, bronchodilatation, inhibition of gastric acid secretion and stimulation of uterine contraction.
    Type: Grant
    Filed: December 7, 1973
    Date of Patent: January 20, 1976
    Assignee: May & Baker Limited
    Inventors: Michael Peter Lear Caton, Trevor Parker