Patents by Inventor Joyce Ruth Krei

Joyce Ruth Krei 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).

  • Alkyl substituted-4-oxo-cyclopenta benzopyrans
    Patent number: 4007207
    Abstract: 1,2,3,4-Tetrahydrocyclopenta[c][1]benzopyrans of the formulae ##STR1## wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a phenyl-lower alkyl group or a cycloalkyl-lower alkyl group. The compounds have anti-hypertensive, antidepressant, analgesic, anticonvulsant, anti-anxiety, sedative-hypnotic and tranquilizing activity in animals.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: February 8, 1977
    Assignee: Sharps Associates
    Inventors: Martin Winn, Raj Kumar Razdan, Haldean Cloyce Dalzell, Joyce Ruth Krei
  • Pharmaceutical compositions containing alryl substituted cyclopenta benzopyrans
    Patent number: 3992550
    Abstract: 1,2,3,4-Tetrahydrocyclopenta[c] [1]benzopyrans of the formulae ##SPC1##Wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a phenyl-lower alkyl group or a cycloalkyl-lower alkyl group. The compounds have anti-hypertensive, antidepressant, analgesic, anticonvulsant, anti-anxiety and tranquilizing activity in animals.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: November 16, 1976
    Assignee: Sharps Associates
    Inventors: Martin Winn, Raj Kumar Razdan, Haldean Cloyce Dalzell, Joyce Ruth Krei
  • Pharmaceutical compositions containing 1 or 2-mono and dialkyl substituted thienobenzopyrans and pharmacological uses thereof
    Patent number: 3946111
    Abstract: 1,2-Dihydro-4H-thieno-[2,3-c][1]benzopyrans of the formulae ##SPC1##Wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a phenyl-lower alkyl group or a cycloalkyl-lower alkyl group. The compounds have analgesic, antihypertensive, antidepressant, anticonvulsant, antianxiety, sedative-hypnotic and/or tranquilization activity.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: March 23, 1976
    Assignee: Sharps Associates
    Inventors: Martin Winn, Raj Kumar Razdan, Haldean Cloyce Dalzell, Joyce Ruth Krei