Patents by Inventor Marion Dugdale

Marion Dugdale 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).

  • Platelet aggregation inhibitory agents and intermediate therefor
    Patent number: 4994462
    Abstract: This invention relates to certain N,N'-bis(nipecotyl)piperazines and their use as platelet aggregation inhibtory agents.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: February 19, 1991
    Assignee: Research Corporation
    Inventors: Andrew Lasslo, Ronald P. Quintana, Marion Dugdale, Randy W. Johnson
  • Platelet aggregation inhibitory agents and intermediates therefor
    Patent number: 4798830
    Abstract: This invention relates to tetrahydroquinoline derivatives and their use for the inhibition of blood platelet aggregation.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: January 17, 1989
    Assignee: Research Corporation
    Inventors: Andrew Lasslo, Ronald P. Quintana, Marion Dugdale, Randy W. Johnson
  • Platelet aggregation inhibitory agents
    Patent number: 4657917
    Abstract: A pharmaceutical composition in unit dosage form suitable for administration to an animal in need thereof comprising a pharmaceutically acceptable carrier and an amount sufficient to inhibit blood platelet aggregation of a compound selected from the group consisting of:[A] A compound having the structural formula: ##STR1## wherein R.sub.1 is ##STR2## R.sub.2 is H or ##STR3## and Alk is lower alkyl;[B] A compound having the structural formula: ##STR4## wherein when R.sub.3 is ##STR5## n is 8, and when R.sub.3 is ##STR6## n is 4 or 8, and Alk is lower alkyl;[C] A compound having the structural formula: ##STR7## wherein when R.sub.4 is ##STR8## n is 8, andwhen R.sub.4 is ##STR9## n is 0, 1, 4 or 8, and Alk is lower alkyl;[D] A compound having the structural formula: ##STR10## wherein Alk is lower alkyl; and[E] Addition salts thereof with pharmaceutically acceptable acids.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: April 14, 1987
    Assignee: Research Corporation
    Inventors: Andrew Lasslo, Ronald P. Quintana, Marion Dugdale
  • Platelet aggregation inhibitory agents and intermediates therefor
    Patent number: 4634709
    Abstract: This invention relates to certain heterocyclic compounds which are useful as platelet inhibitory agents and intermediates for these compounds.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: January 6, 1987
    Assignee: Research Corporation
    Inventors: Andrew Lasslo, Ronald P. Quintana, Marion Dugdale, Randy W. Johnson
  • Platelet aggregation inhibitory agents and intermediates therefor
    Patent number: 4443450
    Abstract: Various bis-nitrogen containing compounds exhibiting blood platelet aggregation inhibiting activity. One such compound being [substituted-N, N.sup.1 -Bis-(nipecotyl)]-piperazine.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: April 17, 1984
    Assignee: Research Corporation
    Inventors: Andrew Lasslo, Ronald P. Quintana, Marion Dugdale, Randy W. Johnson