Patents by Inventor Robert G. Roy

Robert G. Roy 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: 5276052
    Abstract: The invention relates to the use of the benzo[b]-thiophene-2-carboximidamide derivative having formula I ##STR1## or pharmaceutically acceptable salts thereof, for the preparation of a medicament which is suitable for the treatment of heart failure, having high bioavailability without inducing nausea, vomiting and/or restlessness.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: January 4, 1994
    Assignee: Akzo N.V.
    Inventors: Robert T. Logan, James Redpath, George McGarry, Robert G. Roy
  • Patent number: 5026724
    Abstract: A method is provided for treating patients suffering from or susceptible to bronchoconstriction, particularly for patients suffering from an asthmatic attach which comprises the use of benzothiophene, benzofuran, dihydronaphthalene or indene derivatives represented by formula I ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently H, (1-4C) alkyl, (1-4C) halogen substituted alkyl, OH, (1-4C) alkoxy, (1-4C) halogen substituted alkoxy, NO.sub.2, CN, halogen, an unsubstituted or (1-4C) alkyl substituted amino group, or wherein two adjacent groups R.sup.1, R.sup.2, R.sup.3 or R.sup.4 together form methylenedioxy;X is S, O or (CH.sub.2).sub.m in which m is 1 or 2;R.sup.5 is H or (1-4C) alkyl;R.sup.6 is H, NH.sub.2 or (1-4C) alkyl;R.sup.7 is H, (1-4C) alkyl or OR.sup.8 in whichR.sup.8 is H, (1-4C) alkyl or (1-8C) acyl;and its pharmaceutically acceptable salts for the preparation of a medicament with bronchodilator activity.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: June 25, 1991
    Assignee: Akzo N.V.
    Inventors: Robert T. Logan, James Redpath, George McGarry, Robert G. Roy
  • Patent number: 4952571
    Abstract: The invention relates to pyridazinone compounds of the general formula I: ##STR1## wherein R.sup.1 represents one to four substituents, which may be the same or different and are selected from H, OH, halogen, NO.sub.2, unsubstituted or C1-C4 alkyl substituted amino, C1-C4 alkyl, C1-C4 halogen substituted alkyl, O--ALK--NR.sup.4 R.sup.5, C1-C4 alkoxy, whereby two substituents taken together may also represent a methylenedioxy group;R.sup.2 and R.sup.3 represent independently H or C1-C4 alkyl;R.sup.4 and R.sup.5 represent independently H or C1-C4 alkyl, or form together with the nitrogen a 5- or 6- membered ring;X represents S or O;the dotted line represents an optional bond;and their pharmaceutically acceptable salts.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: August 28, 1990
    Assignee: Akzo, N.V.
    Inventors: James Redpath, Robert T. Logan, Robert G. Roy, George McGarry
  • Patent number: 4929636
    Abstract: The invention relates to compounds of the general formula I ##STR1## wherein R.sub.1 represents one up to and including four, the same or different substituents selected from alkyl(1-6 C), alkoxy(1-6 C), hydroxy, halogen, NO.sub.2, CF.sub.3 or the group --NR.sub.5 R.sub.6, whereby two substituents taken together may also represent a methylene-dioxy group,X represents nitrogen or the group ##STR2## n has the value 0, 1 or 2, R.sub.3 represents one of the moieties: ##STR3## the latter meaning of R.sub.3 (amide) only under the condition that for X is nitrogen the meaning of R.sub.1 is limited to substituents selected from hydroxy, alkoxy(1-6 C) and methylenedioxy, and R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or alkyl(1-6 C), and pharmaceutically acceptable salts thereof, suitable in the treatment of heart failure.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: May 29, 1990
    Assignee: Akzo N.V.
    Inventors: James Redpath, Robert T. Logan, David B. McFadzen, Robert G. Roy
  • Patent number: 4705782
    Abstract: The invention relates to compounds of the general formula I ##STR1## wherein R.sub.1 represents one up to and including four, the same or different substituents selected from alkyl(1-6 C), alkoxy(1-6 C), hydroxy, halogen, NO.sub.2, CF.sub.3 or the group --NR.sub.5 R.sub.6,whereby two substituents taken together may also represent a methylene-dioxy group,X represents a member selected from ##STR2## --CH.sub.2 --CH.sub.2 -- and --CH.dbd.CH--, n has the value 0, 1 or 2,R.sub.3 represents one of the moieties: ##STR3## and R.sub.2, R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or alkyl(1-6 C),and pharmaceutically acceptable salts thereof, suitable in the treatment of heartfailure.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: November 10, 1987
    Assignee: Akzo N.V.
    Inventors: Robert T. Logan, James Redpath, Robert G. Roy
  • Patent number: 4665206
    Abstract: The invention relates to compounds of the general formula I ##STR1## wherein R.sub.1 represents one up to and including four, the same or different substituents selected from alkyl(1-6 C), alkoxy(1-6 C), hydroxy, halogen, NO.sub.2 CF.sub.3 or the group --NR.sub.5 R.sub.6, whereby two substituents taken together may also represent a methylene-dioxy group,X represents nitrogen or the group ##STR2## n has the value 0, 1 or 2, R.sub.3 represents one of the moieties: ##STR3## the latter meaning of R.sub.3 (amide) only under the condition that for X is nitrogen the meaning of R.sub.1 is limited to substituents selected from hydroxy, alkoxy(1-6 C) and methylenedioxy, and R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or alkyl(1-6 C), and pharmaceutically acceptable salts thereof, suitable in the treatment of heart failure.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: May 12, 1987
    Assignee: Akzo N.V.
    Inventors: James Redpath, Robert T. Logan, David B. McFadzen, Robert G. Roy
  • Patent number: 4260605
    Abstract: The present invention relates to novel 21-alkylated steroids of the pregnane series having the formula: ##STR1## wherein R.sub.1 =alkyl (1-4 C); R.sub.2 =carboxyacyl (1-18 C); X=H, F or Cl; Y=O, H(OH), H(lower acyloxy), H(F) or H(Cl) with the proviso that Y is not H(F) when X is F; and the dotted line indicates the optional presence of a double bond, to processes for their preparation and to pharmaceutical compositions containing same.The novel compounds possess strong anti-inflammatory properties, when applied locally and cause little or systemic, thymolytic, adrenolytic and salt-retaining effects.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: April 7, 1981
    Assignee: Akzo N.V.
    Inventors: James Cairns, Robert T. Logan, George McGarry, Robert G. Roy, Gilbert F. Woods