Patents Represented by Attorney, Agent or Law Firm A. Dean Olson
  • Patent number: 6001860
    Abstract: A compound of the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein R.sup.17, R.sup.18 and R.sup.1 are as defined below. The compounds of formula I are inhibitors of acyl coenzyme A: cholesterol acyltransferase (ACAT) and are useful as hypolipidemic and antiatherosclerosis agents.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: December 14, 1999
    Assignee: Pfizer Inc.
    Inventor: Ernest S. Hamanaka
  • Patent number: 6001822
    Abstract: A parenteral formulation for 25-cyclohexyl-avermectin Bl, compound (I), which is effective against both internal and external parasites, is well tolerated by animals on both subcutaneous and intramuscular administration and is compatible with conventional injection equipment. ##STR1## The solution comprises compound (I), in a solvent consisting of from 50 to 95% by volume of sesame oil with the remainder ethyl oleate.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: December 14, 1999
    Assignee: Pfizer Inc.
    Inventors: Stephen R. Wicks, Edward Davison
  • Patent number: 5968950
    Abstract: A hydrochloride salt of an Apo B secretion/MTP inhibitor, methods of making the salt, methods of using the salt and pharmaceutical compositions containing the salt are disclosed.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: October 19, 1999
    Assignee: Pfizer Inc
    Inventors: George J. Quallich, George Chang, Lewin T. Wint
  • Patent number: 5965553
    Abstract: This invention relates to certain benzoxazepinones and benzothiazepinones useful as hypocholesterolemic agents, hypotriglyceridemic agents, antiatherosclerosis agents, antifungal agents, Alzheimer's agents or anti-acne agents.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: October 12, 1999
    Assignee: Pfizer Inc.
    Inventors: Andrew S. Bell, Ernest S. Hamanaka, Cheryl M. Hayward, Douglas A. Scully, Blanda Stammen
  • Patent number: 5952322
    Abstract: A method of preventing non-cardiac tissue damage resulting from ischemia and/or hypoxia, comprising administering to a patient in need of such treatment an effective amount of an glycogen phosphorylase inhibitor.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: September 14, 1999
    Assignee: Pfizer Inc.
    Inventors: Dennis J. Hoover, William H. Martin, Judith L. Treadway, W. Ross Tracey
  • Patent number: 5939398
    Abstract: This invention relates to certain steroidal glycosides useful as hypocholesterolemic agents and antiatherosclerosis agents and certain protected intermediates useful in the preparation of said steroidal glycosides.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: August 17, 1999
    Assignee: Pfizer Inc.
    Inventor: Michael Paul Deninno
  • Patent number: 5932581
    Abstract: A method of preventing tissue damage resulting from ischemia, comprising administering to a patient in need of such treatment an effective amount of a sorbitol dehydrogenase inhibitor.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: August 3, 1999
    Assignee: Pfizer Inc.
    Inventors: Thomas A. Beyer, Delvin R. Knight, Jr., Banavara L. Mylari, Peter J. Oates, E. Roy Pettipher, W. Ross Tracey
  • Patent number: 5917034
    Abstract: Compounds of formula (I), pharmaceutically acceptable salts thereof, and pharmaceutically acceptable solvates of either entity, wherein A is optionally monosaturated C.sub.1 -C.sub.4 alkylene optionaly monounsaturatred with C.sub.1 -C.sub.4 alkyl; B is C.sub.1 -C.sub.3 alkylene optionally substituted with C.sub.1 -C.sub.4 alkyl; R.sup.1 is N-amidino-4-piperidyl or 4-amidinophenyl; R.sup.2 is C.sub.4 -C.sub.12 alkyl; (C.sub.3 -C.sub.8 cycalkyl)C.sub.1 -C.sub.4 alkylene; optionally methylene-bridged C.sub.5 -C.sub.8 cycloalkyl optionally substituted with one to three C.sub.1 -C.sub.4 alkyl groups or with hydroxy; C.sub.5 -C.sub.8 alkenyl; C.sub.5 -C.sub.8 cycloalkenyl optionally subsituted with C.sub.1 -C.sub.4 alkyl; piperidyl N-substituted with C.sub.1 -C.sub.4 alkyl; tetrahydrothiopyranyl or tetrahydropyranyl; and R.sup.3 is H or C.sub.1 -C.sub.4 alkyl optionally substituted with C.sub.1 -C.sub.4 alkoxy or with hydroxy; or R.sup.2 and R.sup.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: June 29, 1999
    Assignee: Pfizer Inc.
    Inventors: Alan Daniel Brown, John Christopher Danilewicz, Paul Vincent Fish
  • Patent number: 5914092
    Abstract: An apparatus for maintaining the sterilization of a reactor vessel output. The apparatus comprises a connect means for connecting to and enclosing the reactor vessel output and a steam trap means for maintaining steam pressure. The steam trap means is in fluid communication with and downstream from both the connect means and an output means for releasing pressure. The output means is in fluid communication with and downstream from the connect means and the output means is upstream from the steam trap means. This apparatus provides a significant improvement to the fermentation industry by facilitating the maintenance of a sanitized sampling output.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: June 22, 1999
    Assignee: Pfizer Inc.
    Inventor: Willard K. Moon
  • Patent number: 5908930
    Abstract: Certain 5,10-dihydropyrimido?4,5-b!quinolin-4(1 H)-one compounds, and their pharmaceutically-acceptable salts, are useful as inhibitors of tyrosine kinase enzymes and for the treatment of tyrosine kinase dependent diseases (e.g., cancer, atherosclerosis, antiangiogenesis).
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: June 1, 1999
    Assignee: Pfizer Inc.
    Inventor: Robert L. Dow
  • Patent number: 5905034
    Abstract: A process for separating a natural B avermectin from a natural avermectin containing fermentation broth by using an aqueous precipitation. The process comprises extracting natural avermectins from the fermentation broth with a water miscible solvent and adding sufficient water to precipitate the natural B avermetins. Preferably, the water miscible solvent is a C.sub.1 -C.sub.3 alcohol, acetone, or acetonitrile. In addition, an acid, base, salt or surfactant may be added to facilitate the precipitation. This invention provides an isolation technique that substitutes the use of an aqueous precipitation for nonaqueous solvent precipitations. The reduction in use of nonaqueous solvents provides economic, environmental and safety benefits.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: May 18, 1999
    Assignee: Pfizer Inc.
    Inventor: Abdullah R. Ali
  • Patent number: 5837724
    Abstract: Darifenacin, and its pharmaceutically acceptable salts, are useful in the treatment of cognitive impairment. The invention also discloses the use of combinations of darifenacin, or a pharmaceutically acceptable salt thereof, with an acetylcholinesterase inhibitor, in the treatment of cognitive impairment.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: November 17, 1998
    Assignee: Pfizer Inc.
    Inventors: Michael John Allen, Brian Frank Johnson, Brian Robert Leaker, Robert Michael Wallis
  • Patent number: 5827538
    Abstract: An osmotic device that, following the imbibement of water vapor, provides for the controlled release of a beneficial agent to an aqueous environment. The device comprises a hydrophilic formulation including a beneficial agent, and if needed, an osmagent, surrounded by a wall. The wall is formed at least in part of a semipermeable hydrophobic membrane having an average pore size between about 0.1 .mu.m and 30 .mu.m. The pores are substantially filled with a gas phase. The hydrophobic membrane is permeable to water in the vapor phase and the hydrophobic membrane is impermeable to an aqueous medium at a pressure less than about 100 Pa. The beneficial agent is released, for example, by osmotic pumping or osmotic bursting upon imbibement of sufficient water vapor into the device core.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: October 27, 1998
    Assignee: Pfizer Inc.
    Inventors: Edward L. Cussler, Scott M. Herbig, Kelly L. Smith, Paul van Eikeren
  • Patent number: 5807834
    Abstract: Pharmaceutical combination compositions including certain cholesterol absorption inhibitors and cholesterol synthesis inhibitors. The compositions are useful for the treatment of hypercholesterolemia and atherosclerosis.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: September 15, 1998
    Assignee: Pfizer Inc.
    Inventor: Lee A. Morehouse
  • Patent number: 5804562
    Abstract: Crystalline spirostanyl glycosides and processes for making them are disclosed. The crystalline spirostanyl glycosides are useful for treatment of hypercholesterolemia or atherosclerosis.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: September 8, 1998
    Assignee: Pfizer Inc.
    Inventors: Douglas John Allen, Richard A. Buzon, Michael P. Deninno, Harry Austin Watson, Jr., Jonathan B. Zung
  • Patent number: 5792471
    Abstract: This invention relates to devices useful for the controlled delivery of one or more beneficial agents to an environment of use. More specifically, this invention concerns such devices which are powered by hydrogel. This invention also relates to the controlled delivery of one or more beneficial agents to an aqueous environment of use through the use of such hydrogel powered dispensing devices. Also disclosed are methods for the controlled delivery of one or more beneficial agents to an aqueous environment of use which comprises administering to or otherwise placing the devices of this invention in the environment of use.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: August 11, 1998
    Assignee: Pfizer Inc.
    Inventor: William J. Curatolo
  • Patent number: 5789415
    Abstract: Compounds of the formula ##STR1## wherein: Q is naphthyl, heterocyclic or heterobicyclic; R.sup.1 and R.sup.2, when taken separately, are hydrogen, hydroxy, alkyl, alkylthio, alkylsulfinyl, alkylsulfonyl, phenyl, heterocyclic or heterobicyclic; R.sup.1 and R.sup.2, when taken together, form a carbocyclic, carbobicyclic, heterocyclic or heterobicyclic group; R.sup.3 is --(CH.sub.2).sub.n COR.sup.4, tetrazolyl, alkyltetrazolyl, triazolyl, alkyltriazolyl, --(CH.sub.2).sub.n CH.sub.2 OH, --SO.sub.2 R.sup.4, --SO.sub.2 NR.sup.5 R.sup.6 or --NHSO.sub.2 R.sup.7 ; R.sup.4 is hydrogen, hydroxy, --NR.sup.5 R.sup.6, --NHSO.sub.2 R.sup.7, alkoxy, alkylthio, --NR.sup.5 R.sup.6, --NHSO.sub.2 R.sup.7 or --OY; n is 0 to 5; Y is a pharmaceutically acceptable cation or a group hydrolyzable under physiological conditions; R.sup.5 and R.sup.6, when taken separately, are hydrogen, alkyl, --CONRR, --COOR or --CO(C.sub.6 H.sub.5); R.sup.5 and R.sup.6, when taken together, form an azacyclic ring; R.sup.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: August 4, 1998
    Assignee: Pfizer Inc.
    Inventors: Philip A. Carpino, Eric R. Larson, Banavara L. Mylari
  • Patent number: 5770594
    Abstract: This invention relates to certain benzoxazepinones and benzothiazepinones useful as hypocholesterolemic agents and antiatheroscierosis agents.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: June 23, 1998
    Assignee: Pfizer Inc.
    Inventors: Ernest S. Hamanaka, Cheryl M. Hayward, Joel M. Hawkins
  • Patent number: 5760009
    Abstract: A crystalline monohydrate of (3.beta.,5.alpha.,25R)-3-?(.beta.-D-cellobiosyl)oxy!spirostan-11-one that is useful as a hypocholesterolemic or antiatherosclerosis agent.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: June 2, 1998
    Assignee: Pfizer Inc.
    Inventors: Douglas J. M. Allen, Harry A. Watson, Jr., Jonathan B. Zung
  • Patent number: 5736534
    Abstract: This invention relates to certain 4-aminoquinazolines and the pharmaceutically acceptable salts and stereoisomers thereof, the formula whereof are described herein. The compounds are useful for the treatment of hyperproliferative diseases, particularly as anti-cancer agents.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: April 7, 1998
    Assignee: Pfizer Inc.
    Inventor: Lee D. Arnold