Patents Represented by Attorney, Agent or Law Firm Robert W. Stevenson
  • Patent number: 5998477
    Abstract: Substituted methoxy benzylidene indenyl compounds are useful in the treatment of precancerous lesions and neoplasms.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: December 7, 1999
    Assignee: Cell Pathways Inc.
    Inventors: Gerhard Sperl, Paul Gross, Klaus Brendel, Gary Piazza, Rifat Pamukcu
  • Patent number: 5990117
    Abstract: A method for inhibiting neoplastic cells and related conditions by exposing them to substituted quinazoline compounds.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: November 23, 1999
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary Piazza
  • Patent number: 5965619
    Abstract: Substituted indene derivatives are useful for treating patients having precancerous lesions and for inhibiting the growth of neoplastic cells.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: October 12, 1999
    Assignee: Cell Pathways Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza, Paul Gross, Gerhard Sperl, Klaus Brendel
  • Patent number: 5958982
    Abstract: Substituted indenyl sulfonyl acetic acids, esters and alcohols are useful in the treatment of sarcoidosis.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: September 28, 1999
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary Piazza, Ewa Skopinska-Rozewska
  • Patent number: 5948779
    Abstract: Substituted condensation products of N-benzyl-3-indenylacetamides with heterocyclic aldehydes are useful for inducing or promoting apotosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasias, including precancerous and cancerous lesions.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: September 7, 1999
    Assignee: Cell Pathways, Inc.
    Inventors: Gerhard J. Sperl, Paul Gross, Klaus Brendel, Gary A. Piazza, Rifat Pamukcu
  • Patent number: 5948911
    Abstract: A method for inhibiting neoplastic cells and related conditions by exposing them to substituted thienopyrimidine compounds.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: September 7, 1999
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary Piazza
  • Patent number: 5942520
    Abstract: A method for inhibiting neoplastic cells and related conditions by exposing them to substituted N-cycloalkylmethyl-1H-pyrazolo?3,4-b!quinolin-4-amines.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: August 24, 1999
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 5939417
    Abstract: 1,3,6-Trihydro-6-Aza-3-Oxapentalen-2-One Derivatives for inhibiting neoplastic conditions.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: August 17, 1999
    Assignee: Cell Pathways Inc
    Inventors: Gerhard Sperl, Rifat Pamukcu
  • Patent number: 5902827
    Abstract: Substituted indenyl sulfonyl acetic acids, esters and alcohols are useful in the treatment of psoriasis.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: May 11, 1999
    Assignee: Cell Pathways
    Inventors: Rifat Pamukcu, Gary Piazza, Ewa Skopinska-Rozewska
  • Patent number: 5852035
    Abstract: A method for inhibiting neoplastic cells and related conditions by exposing them to substituted N-arylmethyl and heterocyclmethyl-1H-pyrazolo?3,4-B!quinolin-4-amines.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: December 22, 1998
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 5100807
    Abstract: The present invention is directed to a fluorescence polarization immunoassay for determining the phenylacetylglutamine (PAG) content in body fluids, to the various components needed for preparing and carrying out such an assay, and to the methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them. The assay is conducted by measuring the degree of polarization of plane polarized light that has been passed through a solution continuing sample, antiserum and tracer.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: March 31, 1992
    Assignee: Abbott Laboratories
    Inventors: Maciej B. Adamczyk, Hossein A. Ghanbari, Donald D. Johnson
  • Patent number: 5003054
    Abstract: A method for performing a diagnostic immunoassay by solid phase separation for digoxin. To a reaction mixture of a test sample and labeled anti-digoxin antibody, which forms a complex of any digoxin present in the test sample, is added a solid phase material having an immobilized ouabain triacetate derivative compound capable of binding any excess labeled antibody. The solid phase material is chosen to rapidly settle whereby a solid and liquid phase is formed. The liquid phase can then be extracted to measure the amount of digoxin-labeled antibody present therein. Ouabain triacetate derivative compounds possess sufficient affinity for anti-digoxin antibodies, and are therefore useful in a solid phase separation based digoxin immunoassay for settling out such antibodies without contributing to undesired background interference.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: March 26, 1991
    Assignee: Abbott Laboratories
    Inventors: Frank C. Grenier, Terry A. Pry, Lawrence Kolaczkowski
  • Patent number: 4994385
    Abstract: Novel polyamino acid based coupling agents are disclosed. These reagents are useful for conjugating proteins (e.g. antibodies to enzymes) for use in diagnostic assays.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: February 19, 1991
    Assignee: Abbott Laboratories
    Inventors: Christopher Bieniarz, Christopher J. Welch, Grady Barnes
  • Patent number: 4933147
    Abstract: Improvements in apparatus for performing an assay to determine the presence or amount of a substance in a test sample, which apparatus comprises means for dispensing one or more reagents from containment means therefor into a reaction vessel and means for dispensing the sample from a sample container into said vessel for reaction with the reagents during performance of the assay, are disclosed. The improvements reside in the apparatus further comprising containment means for the reagents integral and in combination with the sample container and the reaction vessel.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: June 12, 1990
    Assignee: Abbott Laboratories
    Inventors: Robert C. Hollar, Tung-Ming Huang
  • Patent number: 4912208
    Abstract: The present invention provides novel fluorescein derivative compounds having fluorescence spectrum and quantum yield characteristics similar to those of fluorescein. The compounds are readily synthesized and purified and are readily soluble in water at self-quenching concentrations. Significantly, due to the presence of polar polyhydroxy group substituents and the absence of metal-chelating groups, these fluorescein derivatives are susceptible to minimal leakage across liposome membranes and have fluorescence characteristics minimally sensitive to the presence of metal ions. Compounds of the invention are thus exceptionally suitable for use in the development of highly storage stable liposome preparations to be employed in immunolytic assays involving human body fluid samples.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: March 27, 1990
    Assignee: Abbott Laboratories
    Inventors: Michael D. Fiechtner, Christopher Bieniarz, Mohamed Shipchandler, Maciej Adamczyk
  • Patent number: 4902630
    Abstract: This disclosure relates to a fluorescence polarization immunoassay method for determining C-reactive protein in liquids, especially in biological fluids such as serum, plasma, spinal fluid, amnionic fluid and urine. This disclosure also relates to novel reagents useful in such fluorescence polarization immunoassays.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: February 20, 1990
    Assignee: Abbott Laboratories
    Inventors: Larry G. Bennett, Enrico G. Chiapetta
  • Patent number: 4897422
    Abstract: Compounds of the formula: ##STR1## where R.sub.1 is amino or methyl; R.sub.2 is C.sub.1 -C.sub.2 alkyl; R.sub.3 is one or more substituents selected from hydrogen, halogen or trihalomethyl; R.sub.4 is one or more substituents selected from hydrogen, halogen, trihalomethyl, C.sub.1 to C.sub.4 alkoxy or C.sub.1 to C.sub.4 alkyl; and M is hydrogen, a pharmaceutically acceptable cation, aroyl, or C.sub.1 to C.sub.6 alkoyl are inhibitors of 5- and/or 12-lipoxygenase enzymes.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: January 30, 1990
    Assignee: Abbott Laboratories
    Inventor: James B. Summers, Jr.
  • Patent number: 4873035
    Abstract: The present invention provides novel methods for generating aqueous liquid encapsulating multi-lamellar lipid vesicles (liposomes) wherein one or more lipids, or lipid conjugates, and an aqueous liquid to be encapsulated, are agitated in a vessel in the presence of spherical contact masses having a mean diameter of less than 3,000 microns, the preferred size range being 50-100 microns in diameter, and resulting in a substantially homogeneous population of vesicles having diameters in the range of about 150 to about 3,000 nanometers. The methods allow for the use of small quantities of marker and lipid, leave no residual solvents, allow for contact only with glass surfaces, and involve no transfer of liposome preparations from lipid film drying vessels to sizing apparatus.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: October 10, 1989
    Assignee: Abbott Laboratories
    Inventor: Martin Wong
  • Patent number: D305150
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: December 19, 1989
    Assignee: Abbott Laboratories
    Inventor: John Pastrone
  • Patent number: D305684
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: January 23, 1990
    Assignee: Abbott Laboratories
    Inventors: William J. Kanewske, III, Cassandra H. Stern, Brian W. Renoe