Patents by Inventor David A. Downs

David A. Downs 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).

  • Processes and apparatus for extraction of active substances and enriched extracts from natural products
    Publication number: 20040147767
    Abstract: Processes for preparing extracts of natural products such as plant material, and for preparing purified extracts from crude extracts of natural products, by extraction with hot gas. Apparatus suitable for use in preparing extracts of natural products are also described.
    Type: Application
    Filed: November 4, 2003
    Publication date: July 29, 2004
    Inventors: Brian Whittle, Geoffrey Guy, David Downs
  • Lightweight gypsum board product and method of manufacture
    Publication number: 20040026002
    Abstract: A method of making a gypsum board includes mixing together gypsum and water in a mixer to form a gypsum slurry; discharging the gypsum slurry onto a first facing sheet; laying a second facing sheet on top of the discharged gypsum slurry; passing the gypsum slurry and facing sheets through a forming station to form the slurry to a desired thickness; allowing the formed gypsum slurry to set; removing at least one of the facing sheets from the set gypsum; cutting the set gypsum into boards; and drying the cut gypsum boards.
    Type: Application
    Filed: February 5, 2003
    Publication date: February 12, 2004
    Inventors: Walter Weldon, Steven Roy Butler, David Downs
  • Method for the treatment of psychomotor stimulant addiction
    Patent number: 5232934
    Abstract: A method of treatment is provided for reducing or eliminating psychomotor addiction in mammalian subjects, employing as an active agent 3-phenoxypyridine or a pharmaceutically acceptable acid-addition salt thereof.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: August 3, 1993
    Assignee: Warner-Lambert Co.
    Inventor: David Downs
  • Methods of treating depression and psychoses
    Patent number: 5073561
    Abstract: Certain N-substituted 1-(1,2,3,6-tetrahydro-3-pyridinyl)oximes and N-substituted 1-(1,2,3,6-tetrahydro-4-pyridinyl)oximes are useful as sigma binding agents for the treatment of depression, psychoses and/or inflammatory diseases.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: December 17, 1991
    Assignee: Warner-Lambert Company
    Inventors: Linda L. Coughenour, Robert E. Davis, David A. Downs, Thomas G. Heffner, Leonard T. Meltzer, Walter H. Moos, David W. Moreland, Haile Tecle
  • Tetrahydropyridine oxime compounds
    Patent number: 4929734
    Abstract: Certain N-substituted 1-(1,2,3,6-tetrahydro-3-pyridinyl)oximes and N-substituted 1-(1,2,3,6-tetrahydro-4-pyridinyl)oximes are useful as sigma binding agents for the treatment of depression, psychoses and/or inflammatory diseases.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: May 29, 1990
    Assignee: Warner-Lambert Company
    Inventors: Linda L. Coughenour, Robert E. Davis, David A. Downs, Thomas G. Heffner, Leonard T. Meltzer, Walter H. Moos, David W. Moreland, Haile Tecle
  • Tetrahydropyridine oxime cholinergic agents and method of treatment
    Patent number: 4798841
    Abstract: Certain N-substituted 1-(1,2,3,6-tetrahydro-3-pyridinyl)oximes and N-substituted 1-(1,2,3,6-tetrahydro-4-pyridinyl)oximes are useful as analgesic agents or agents for the teatment or amelioration of the symptoms of cerebral insufficiency characterized by decreased central acetylcholine production or release.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: January 17, 1989
    Assignee: Warner-Lambert Company
    Inventors: David A. Downs, Walter H. Moos, David W. Moreland, Haile Tecle
  • O-substituted tetrahydropyridine oxime cholinergic agents
    Patent number: 4786648
    Abstract: Certain O-substituted-1,2,5,6-tetrahydro-3- or 1,2,3,6-tetrahydro-4-pyridine oximes are useful as agents for treating pain or for treating the symptoms of senile cognitive decline.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: November 22, 1988
    Assignee: Warner-Lambert Company
    Inventors: Stephen C. Bergmeier, David A. Downs, Walter H. Moos, David W. Moreland, Haile Tecle
  • O-substituted tetrahydropyridine oxime cholinergic agents
    Patent number: 4710508
    Abstract: Certain O-substituted 1-(1,2,3,6-tetrahydro-1-methyl-3-pyridinyl)ketone oximes and O-substituted 1-(1,2,3,6-tetrahydro-4-pyridinyl)ketone oximes are useful as analgesic agents or agents for the treatment or amelioration of the symptoms of cerebral insufficiency characterized by decreased central acetylcholine production or release.Pharmaceutical compositions containing the compounds and methods of using the compositions in a pharmaceutical method are also disclosed.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: December 1, 1987
    Assignee: Warner-Lambert Company
    Inventors: Stephen C. Bergmeier, David A. Downs, Walter H. Moos, David W. Moreland, Haile Tecle
  • Diphenylmethylene piperidines compositions and methods for their use
    Patent number: 4666905
    Abstract: Novel chemical compounds which are diphenylmethylene piperidine compounds are provided, as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. The compounds have pharmacological properties especially anticholinergic properties, and are useful as antiemetic, antihistamine, pulmonary, antiallergy, and antispasmodic agents.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: May 19, 1987
    Assignee: Warner-Lambert Company
    Inventors: David A. Downs, Haile Tecle
  • Diphenylmethylene piperidines, compositions and use
    Patent number: 4640925
    Abstract: Novel chemical compounds which are diphenylmethylene piperidine compounds are provided, as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. The compounds have pharmacological properties especially anticholinergic properties, and are useful as antiemetic, antihistamine, pulmonary, antiallergy, and antispasmodic agents.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: February 3, 1987
    Assignee: Warner-Lambert Company
    Inventors: David A. Downs, Haile Tecle
  • Diphenylmethylene piperidines, compositions and methods of use
    Patent number: 4584301
    Abstract: Novel chemical compounds which are diphenylmethylene piperidine compounds are provided, as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. The compounds have pharmacological properties especially anticholinergic properties, and are useful as antiemetic, antihistamine, pulmonary, antiallergy, and antispasmodic agents.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: April 22, 1986
    Assignee: Warner-Lambert Company
    Inventors: David A. Downs, Haile Tecle
  • Diphenylmethylene piperidines
    Patent number: 4540780
    Abstract: Novel chemical compounds which are diphenylmethylene piperidine compounds are provided, as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. The compounds have both anticholinergic and antidopaminergic properties, and are useful as antiemetic, antihistamine, pulmonary, antiallergy, and antispasmodic agents.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: September 10, 1985
    Assignee: Warner-Lambert Company
    Inventors: David A. Downs, Haile Tecle