Cellulose Or Derivative Patents (Class 436/530)
  • Patent number: 5928917
    Abstract: Fusion proteins or conjugates are provided containing an amino acid sequence having a substrate binding region of a polysaccharidase such as cellulase that binds to a .beta.-1,4-glycan matrix such as cellulose. The substrate binding region is essentially without polysaccharidase activity. In the fusion protein, the substrate binding region is fused or chemically linked to a polypeptide such as an enzyme, a hormone, an immunoglobulin or a protein dye. By contacting the fusion protein with a .beta.-1,4-glycan matrix, the substrate binding region binds to the matrix to immobilize the polypeptide on the matrix. The polypeptide or fusion protein can be removed from the matrix with a protease recognition sequence or with a solution having a low ionic strength or high pH. In the conjugate, the substrate binding region is joined such as by covalent bonding to a non-protein chemical moiety such as a dye, chromophore, fluorescor, radionuclide or enzyme co-factor. By contacting the conjugate with a .beta.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: July 27, 1999
    Assignee: University of British Columbia
    Inventors: Douglas G. Kilburn, Robert C. Miller, Neil Gilkes, R. Antony J. Warren
  • Patent number: 5925353
    Abstract: A stent for the inhibition of restentosis. The stent is coated with an antigen which can be bound by a labelled antibody. The antibody is preferably labelled with a radioactive source. After the stent has been placed in the blood vessel of the subject, the antibody is injected. The antibody then binds to the antigen on the stent, thereby localizing the radioactive source to the area to be treated, for example for restenosis. Other biomedical devices, such as coil, artificial valve and vascular graft, could also be used in the place of the stent. The biomedical device could be placed in another biological passageway, such as the gastrointestinal tract, an airway or the genitourinary tract.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: July 20, 1999
    Inventor: Salomon Mosseri
  • Patent number: 5922530
    Abstract: A dye couple compound is provided for use in a test device containing a reagent system for detecting the presence or quantity of an analyte in a sample. The reagent system comprises one or more enzymes which, in the presence of the analyte, produce an oxidizing agent in quantities indicative of the quantity of analyte in the sample. The compound of choice is meta?3-methyl 2-benzothiazolinone hydrozone!N-sulfonyl benzenesulfonate monosodium.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: July 13, 1999
    Assignee: Lifescan, Inc.
    Inventor: Yeung S. Yu
  • Patent number: 5916746
    Abstract: This invention relates to an improved method for detecting and quantifying the presence of a target molecule, such as an antigen, an antibody or a polynucleotide, in a sample which method uses alkaline phosphatase as the reporter enzyme and the reduction of a tetrazolium salt to a formazan as part of the detection/signaling system.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: June 29, 1999
    Assignee: Kirkegaard & Perry Laboratories, Inc.
    Inventors: Carrington S. Cobbs, Thomas M. Woerner
  • Patent number: 5906947
    Abstract: A method for the repeated transfer of liquids from one of several storage containers into a transfer container wherein protective tips are placed onto a tip of a pipette in order to avoid contamination.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: May 25, 1999
    Assignee: Boehringer Mannheim GmbH
    Inventors: Gerhard Bienhaus, Hans Lange, Thomas Walter
  • Patent number: 5900379
    Abstract: This invention relates to a novel analytical device for collecting, analyzing and storing of biological samples and, more specifically, to an analytical device used in the analysis of biological fluids such as urine.
    Type: Grant
    Filed: April 11, 1996
    Date of Patent: May 4, 1999
    Assignee: Mizuho USA, Inc.
    Inventors: Hiroto Noda, Benedict Zin
  • Patent number: 5898005
    Abstract: Methods are provided for conducting specific binding assays to determine the concentration or presence of at least one analyte in a sample. Dendrimer-reagent preparations with particular analyte specificities are mixed in solution with a sample to form dendrimer-reagent-sample complexes. The complexes are then immobilized on a solid phase. Immobilization is facilitated by coupling specific binding assay reagents such as polypeptide receptors or analytes with water soluble polymers. Such water soluble polymers, for example star polymers such as dendrimers, provide production advantages of lot-to-lot uniformity and homogeneity, and can enhance sensitivity due to low non-specific binding to the solid phase.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: April 27, 1999
    Assignee: Dade Behring Inc.
    Inventors: Pratap Singh, Fred Moll, III, Peter Cronin, Spencer H. Lin, Charles Ferzli, Kent Koski, Richard Saul
  • Patent number: 5895765
    Abstract: Disclosed is an improved method for the detection of an analyte in a fluid test sample using a strip of a negatively charged matrix material having a zone containing mobile, labeled binding partner for the analyte and a separate zone for capturing the labeled binding partner as it is carried through this zone by the fluid test sample. The improvement involves combining the fluid test sample with a polyalkoxylated amine surfactant to control non-specific binding of the labeled binding partner to the negatively charged matrix material.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: April 20, 1999
    Assignee: Bayer Corporation
    Inventors: Gary W. Rheinheimer, Meitak Teresa Yip
  • Patent number: 5888728
    Abstract: The present invention encompasses a capture membrane comprising a porous filter membrane having a hapten bound directly or indirectly to the membrane wherein complexes formed by specific binding having an anti-hapten bound to a binding member of the specifically binding complex are removed from a solution by the hapten as the solution passes through the membrane. In the preferred embodiment biotin is the hapten and avidin or streptavidin is the anti-hapten.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 30, 1999
    Assignee: Molecular Devices Corporation
    Inventors: John D. Olson, Robert F. Zuk, Richard D. Armenta, Charles R. Burke, Viola T. Kung, Edward L. Sheldon
  • Patent number: 5879951
    Abstract: An assay device for the performance of assays for analytes, particularly those of biological interest, provides for improved efficiency and sensitivity by reducing background. The assay device performs an immunochromatographic assay and also provides a wash to remove unbound labeled specific binding partner and thereby reduce the background. Assay devices according to the present invention can use either a directly visible label such as a metal sol label or an enzyme label. One embodiment of assay devices according to the present invention is particularly suitable for assay of analytes in whole blood samples. The present invention also encompasses test kits and methods of use of the assay devices.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: March 9, 1999
    Assignee: SmithKline Diagnostics, inc.
    Inventor: Vincent A. Sy
  • Patent number: 5879899
    Abstract: The present invention provides methods of assaying the human DNA repair enzyme O.sup.6 -methylguanine-DNA methyltransferase (MGMT) and/or active site alkylated derivatives thereof (R-MGMT), which rely on the ability of a protease, e.g., V8 Protease (also referred to as Glu-C Protease), to distinguish between these two enzyme forms. Such a method comprises the steps of: (a) contacting the sample with a protease to which one of human MGMT and R-MGMT is preferentially sensitive; and (b) determining whether the treated sample contains one or more polypeptides selected from (I) at least one polypeptide fragment characteristic of action of the protease on the protease-sensitive form of human MGMT and (ii) the protease-resistant form of human MGMT.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: March 9, 1999
    Assignee: National University of Singapore
    Inventor: Benjamin F. Li
  • Patent number: 5877029
    Abstract: Antibodies having binding affinity for free IGFBP-1, biological compositions including antibodies having binding affinity for free IGFBP-1, kits for detecting free IGFBP-1 using the antibodies, and cell lines for producing the antibodies are provided. Also provided are devices and methods for detecting free IGFBP-1 and a rupture in a fetal membrane based on the presence of amniotic fluid in a vaginal secretion, as indicated by the presence of free IGFBP-1 in the vaginal secretion. The antibodies that are provided may be characterized by their ability to selectively recognize those IGFBP-1 molecules which are free of IGF-1 and IGF-2, i.e., antibodies which have a binding affinity for free IGFBP-1 that is greater than a binding affinity of the antibody to bound IGFBP-1. These antibodies may also be characterized by their competition with IGF-1 and IGF-2 for binding to IGFBP-1.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: March 2, 1999
    Assignee: California Research LLC
    Inventors: Boris Fuks, Marina Boltovskaya, Alexander Konstantinov, Svetlana Nazimova, Nelli Starosvetskaya, Alexander Stepanov, Evgeny Zaraisky
  • Patent number: 5876947
    Abstract: The invention provides monospecific antibodies that are specifically reactive with fibrinopeptide B (FPB) and with fibrinogen and fragments thereof containing the amino acid sequence defined by SEQ ID NO:1. The invention also provides anti-FPB probes, including monospecific anti-FPB antibodies that have been detectably labeled. In addition, the invention provides methods of using the monospecific antibodies for detection of fibrinopeptide B, as well as reagents and kits for performing the methods. For example, the invention provides a method for detecting fibrinopeptide B with specificity in biological samples such as blood samples, by using the antibody to immunometrically bind to the fibrinopeptide B. Diagnostic methods for determining information associated with atherogenesis and/or thrombogenesis. The invention further provides continuous cell lines (hybridomas) that produce monospecific anti-FPB antibodies.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 2, 1999
    Assignee: The New York Blood Center, Inc.
    Inventors: Bohdan J. Kudryk, Colvin M. Redman, Jian-Zhong Zhang
  • Patent number: 5874216
    Abstract: A chromatographic strip positive readout binding assay device and method suitable for quick, sensitive and reliable field testing for small molecules such as environmental contaminants, drugs of abuse, therapeutic drugs and hormones. The detectable label is not attached to either the analyte or to the analyte receptor. Low affinity binding pairs can be used in the positive readout binding assay.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: February 23, 1999
    Assignee: EnSys Environmental Products, Inc.
    Inventor: James P. Mapes
  • Patent number: 5866387
    Abstract: There is provided a method for immobilizing a ligand by reacting a solvent-insoluble carrier having aldehyde group with a compound shown by the general formula: ##STR1## wherein X is --S-- or --O--, R.sup.1, R.sup.2 and R.sup.6 are the same or different, each of which is hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.3 is hydrogen atom or a substituent wherein an atom adjacent to nitrogen atom shown in the above-mentioned general formula has no unsaturated bond, R.sup.4, R.sup.5 and R.sup.7 are arbitrary substituents; provided that only one partial chemical structure of HX--C--C--NHR.sup.3 wherein X and R.sup.3 are the same as defined above or HX--C--C--C--NHR.sup.3 wherein X and R.sup.3 are the same as defined above is contained in one compound described above by which, a ligand or a compound to which a ligand is bonded can react specifically and effectively with aldehyde group in a solvent-insoluble carrier at a prescribed position to form a stable bond.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: February 2, 1999
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Eiji Ogino, Kazuo Suzuki, Nobutaka Tani
  • Patent number: 5861319
    Abstract: Methods and compositions are provided for specific binding assays in which specific binding reagents are immobilized on a solid phase. Immobilization is facilitated by covalently coupling specific binding assay reagents such as polypeptide receptors or analytes with water soluble polymers. Such water soluble polymers, for example star polymers such as dendrimers, provide production advantages of lot-to-lot uniformity and homogeneity, and can enhance sensitivity due to low non-specific binding to the solid phase.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: January 19, 1999
    Assignee: Dade Behring Inc.
    Inventors: Spencer H. Lin, Kwok Sum Yu, Pratap Singh, Steven E. Diamond
  • Patent number: 5861265
    Abstract: A device for performing an enzyme-labelled binding assay comprises an absorbent material and a developing solution containing a substrate for said enzyme, wherein the absorbent material is provided with a plurality of reagent zones including an indicator reagent zone and is capable of transporting the developing solution by capillary action sequentially through the reagent zones, and wherein the indicator reagent zone includes a reagent capable, directly or indirectly, of immobilizing an enzyme-labelled reagent in an amount dependent on the assay result, characterized in that the absorbent material includes a reagent that prevents a signal formation except where enzyme-labelled reagent is immobilized at the indicator reagent zone. The absorbent material is suitably in the form of an elongate strip provided with transverse reagent zones. The device is useful for performing immunoassays, including immunometric assays and dual analyte assays.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 19, 1999
    Assignee: Alusuisse Holdings AG
    Inventor: Martin John Perry
  • Patent number: 5858392
    Abstract: A supported polyionic hydrogel is prepared by impregnating a support matel with a solution of anionic polysaccharide and a solution of cationic polysaccharide where the anionic polysaccharide and cationic polysaccharide react with each other to form a polyionic hydrogel impregnated in the support material. The hydrogel may be dried such as by lyophilization. Preferably, the anionic polysaccharide is xanthan, dicarboxystarch or dicarboxycellulose and the cationic polysaccharide is chitosan. Especially preferred is a polyionic hydrogel formed from xanthan and chitosan. A paper material or a textile material can be used as the support material. A dry supported polyionic hydrogel can be formed as a bandage without active material incorporated therein. The supported polyionic hydrogel may be formed containing a biologically active material by having the active material in either polysaccharide solution or in another solution impregnated into the support material.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: January 12, 1999
    Assignees: Yissum Research Development Company of the Hebrew University of Jerusalem, Israel Fiber Institute, State of Israel Ministry & Trade
    Inventors: Severian Dumitriu, Hilda Guttmann, Itzhak Kahane
  • Patent number: 5855790
    Abstract: Magnetic particles which comprise a core of a magnetic material surrounded by a mixture of a fibrous material and a solid binding agent. The particles may be embedded in a polymer resin which incorporates sites, which are selective for particular ions, to form composite magnetic resin particles. The composite magnetic resin particles may be used for the removal of pollutant ions from an aqueous solution in which they are contained.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: January 5, 1999
    Assignee: Selective Environmental Technologies, Inc.
    Inventors: David Bradbury, George Richard Elder, Adel Taha Sayed Ahmed Hendawi
  • Patent number: 5856201
    Abstract: A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: January 5, 1999
    Assignees: Yissum Research Development Company of the Hebrew University of Jerusalem, The University of California
    Inventors: Oded Shoseyov, Itai Shpiegl, Marc A. Goldstein, Roy H. Doi
  • Patent number: 5854000
    Abstract: Methods are disclosed for measuring the accumulation of advanced glycosylation endproducts (AGEs), which are predicated on the discovery that such AGEs are present in tobacco and its byproducts. More particularly, the methods focus on the observation that individuals who smoke or otherwise use tobacco have increased levels of AGEs over non-smoking individuals. The present methods relate to the measurement of AGE levels in both individuals and in tobacco and its byproduct, smoke. Methods are also disclosed for the evaluation of the tobacco products to determine their storage status and organoleptic capacity and potential, as well as for the treatment of the ambient to lower AGE levels. For example, air or other samples may be taken and evaluated by a dosimeter or like device, to determine whether AGE levels exceed normal, after which measures could be implemented to remediate the ambient condition. All such methods and corresponding materials are contemplated and included.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: December 29, 1998
    Assignees: Alteon Inc., The Picower Institute For Medical Research
    Inventors: Richard J. Bucala, Helen Vlassara, Anthony Cerami, Henry W. Founds
  • Patent number: 5849600
    Abstract: The invention provides a method of diagnosing Alzheimer's disease in a human patient by measuring the amount of p33 present in a biological sample from a patient who may have Alzheimer's disease relative to the amount of p33 in a control sample from an unaffected human. Also included in the invention are diagnostic kits for Alzheimer's disease and methods of screening for effective therapeutics for Alzheimer's disease.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 15, 1998
    Assignee: The McLean Hospital Corporation
    Inventors: Ralph Nixon, Toshiyuki Honda
  • Patent number: 5846838
    Abstract: A chromatographic assay device for use with immunoassays allows rapid and convenient assays of analytes of biological interest, and permits extractions to be carried out in situ, avoiding the use of separate extraction vessels. The device has a wide dynamic range and avoids interference from particulates or colored components. In one form, the device comprises: (1) a first opposable component comprising a sample preparation zone adapted to receive a sample to be assayed; (2) a second opposable component comprising a chromatographic medium; and (3) a conductive barrier attached to the second opposable component. The first and second opposable components can be brought into opposition so as to cause the sample preparation zone to apply the sample to be tested to the chromatographic medium. Preferably, the analyte is detected with a visually detectable label. Other variations of the device vary the arrangement of components to provide optimal chromatography for a variety of analytes.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: December 8, 1998
    Assignee: SmithKline Diagnostics, Inc.
    Inventor: Howard M. Chandler
  • Patent number: 5846736
    Abstract: The present invention relates, in general to protein that is a seed storage protein having high nutritional value. In particular, the invention relates to the protein AmA1 and to a DNA sequence encoding same. The invention further relates to a recombinant molecule comprising the AmA1 encoding sequence and to a host cell transformed therewith. In addition, the invention relates to a method for producing transgenic plants with high nutritionally rich amino acids.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: December 8, 1998
    Inventors: Asis Datta, Anjana Raina, Subhra Biswas
  • Patent number: 5846746
    Abstract: A monoclonal antibody has been produced that binds to apical cells of human ocular surface and vaginal epithelia. The antigen recognized by this monoclonal antibody is a mucin-like cell surface glycoprotein. The antibody is of diagnostic use in the evaluation of the ocular surface in dry eye patients, and the antigen has therapeutic potential for use in treatment of dry eye disease. In a comparison of dry eye and normal patients the pattern of antibody binding to dry eye ocular surface epithelia has been shown to differ from the binding pattern seen in normal epithelia.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: December 8, 1998
    Assignee: Schepen's Eye Research Institute, Inc.
    Inventor: Ilene K. Gipson
  • Patent number: 5834179
    Abstract: Disclosed are novel compositions of morphogenic proteins constituting soluble forms of these proteins, antibodies that distinguish between soluble and mature forms, and method for producing these morphogenic proteins and antibodies.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 10, 1998
    Assignee: Creative BioMolecules
    Inventors: William K. Jones, Ronald F. Tucker, David C. Rueger, Hermann Oppermann, Engin Ozkaynak, Thangavel Kuberasampath
  • Patent number: 5824268
    Abstract: A test strip, a device incorporating the test strip and a method for use of the test strip within the device detecting an analyte in a solution or bodily fluid are disclosed. The test strip was three zones, a reaction zone coated with a substance that binds the analyte, a sample zone with a region for addition of the sample of solution or fluid, and a detection region zone with a region coated with detection reagent. An absorbent pad underlies the reaction zone. The reaction zone is a small membrane and is physically in contact on its upper surface with both the sample zone and the detection zone. The test strip is incorporated into a device which includes a sample collection/transferring device, a housing for holding the test strip, and a container for holding solvent solutions at both outer ends of the test strip such that the solvent solutions can come into contact with the outer ends of the test strip when pressure is applied to the ends.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: October 20, 1998
    Assignee: Universal Health Watch, Inc.
    Inventors: David Bernstein, Mary Ann Childs, William Trainor, Majorie Wier, Erick Gray
  • Patent number: 5821130
    Abstract: Combinatorial libraries are disclosed which are represented by Formula I:(T'--L).sub.q --S--C(O)--L'--II' Iwherein:S is a solid support; T'--L-- is an identifier residue; and --L'--II' is a ligand/linker residue. These libraries contain dihydrobenzopyrans of the formula: ##STR1## which interact (i.e., as agonists or antagonists) with .alpha. adrenergic receptors, dopamine receptors, .sigma.-opiate receptors, and K.sup.+ channels and are inhibitors of carbonic anhydrase isozymes. They are useful in the treatment of ocular diseases such as glaucoma.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: October 13, 1998
    Assignee: Pharmacopeia, Inc.
    Inventors: John J. Baldwin, John C. Reader, Lawrence W. Dillard, Ge Li, Wenguang Zeng
  • Patent number: 5817470
    Abstract: This invention is related to a process for the enhanced immobilization of a ligand to solid supports to be used for a biochemical detection method. The enhanced immobilization of the ligand was obtained by coating the surface of the solid support with the adhesive polyphenolic protein isolated from mussels. The bound ligand is reacted with a solution containing an antiligand whereby the antiligand becomes bound to the immobilized ligand. After removing the excess or unbound antiligand, the antiligand bound to the immobilized ligand is detected by using an enzyme-linked immunoassay.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: October 6, 1998
    Assignee: Sociedad Biotecnologica Collico Limitada
    Inventors: Luis O. Burzio, Veronica A. Burzio
  • Patent number: 5817527
    Abstract: A new method for immobilization of small molecules on solid supports via a macromolecular spacer has been developed. A protein or another macromolecule is first immobilized in an aqueous medium, and the solid support is than washed with an organic solvent. The small molecule is coupled in an organic medium, followed by organic medium washes. The new solid phases are useful for affinity purifications, immunoassays and other binding assays, and for selection of binders by panning procedures.
    Type: Grant
    Filed: November 6, 1995
    Date of Patent: October 6, 1998
    Assignee: Chiron Diagnostics Corporation
    Inventors: Uri Piran, Steve C. S. Chang, William J. Riordan, James W. Peterson, Edward M. Sunshine
  • Patent number: 5817525
    Abstract: The present invention features stable bulking agents and blocking agents for solid phase materials containing proteins. The proteins have thiol groups which are blocked or chemically inert, preventing the formation of aggregates. Chemical solutions wherein thiol groups, if present, are blocked or chemically inert, are particularly useful in analytical applications and in diagnostic reagents utilizing solid phase materials or particles.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 6, 1998
    Assignee: Chiron Diagnostics Corporation
    Inventor: Uditha deAlwis
  • Patent number: 5800983
    Abstract: HIV-1 peptides having at least one point mutation between position 593 and 611 of the HIV-1 gp160 amino acid sequence. The point mutation either is at position 604 or 610, or both positions. Immunoassays which utilize these peptides are provided, as well as, diagnostic test kits which contain these peptides.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: September 1, 1998
    Assignee: Abbott Laboratories
    Inventors: Dominique P. Bridon, Isaac S.-Y. Sze, deceased, David J. Daghfal, Keeve D. Jaffe, Tracey L. Colpitts
  • Patent number: 5789154
    Abstract: A test device for detecting or determining an analyte in a test solution includes an absorbent material having separate contact, competitive binding, and measurement portions. The contact portion is positioned for contact with and uptake of the test solution. The competitive binding portion has a binding material for the analyte non-diffusively bound thereto. The measurement portion has a receptor for the analyte and marker-encapsulating liposomes non-diffusively bound thereto. In a method for using the test device, a solution containing the analyte and the analyte-liposome conjugate is allowed to traverse the absorbent material from the contact portion through the competitive binding portion and on through the measurement portion of the absorbent material. The amount of marker in the measurement portion of the absorbent material, following traversal by the test solution, is then determined as a measure of the analyte in the sample.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: August 4, 1998
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Richard Allen Durst, Stuart Graham Reeves, Sui Ti Atienza Siebert
  • Patent number: 5789179
    Abstract: A method of assaying for CAT in a fluid involves the use of a complex of chloramphenicol with a member of a specific binding pair such as a hapten or biotin. Biotinylated chloramphenicol is claimed as new. A scintillation proximity assay involves use of this reagent with tritiated acetyl coenzyme A and streptavidin coated SPA beads.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: August 4, 1998
    Assignee: Amersham International plc
    Inventors: Gerard Philip Brophy, William Jonathan Cummins, Christopher Robert Mundy
  • Patent number: 5789173
    Abstract: The present invention discloses a method for rapid antimicrobial susceptibility testing to screen antibiotics in a few hours instead of days by conventional methods. This method can also be used to identify susceptible antibiotics to treat mycobacterial infection in a few days instead of the usual six to eight weeks. Fast screening of antibiotics is achieved by a short period of specimen incubation in different antibiotics embedded media to create differential bacterial counts. The differences of bacterial counts among antibiotics embedded media are subsequently amplified by DNA amplification methods for detection. Following DNA amplification, rapid quantitation and minimum inhibition concentration (MIC) determinations for a panel of antibiotics are achieved in less than one minute by fluorescence quantitation methods.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: August 4, 1998
    Assignee: Academia Sinica
    Inventors: Konan Peck, Pan-Chyr Yang, Shu-Li Wung
  • Patent number: 5770377
    Abstract: A method for interfering with the binding between p53 and MDM2 or a protein having a p53 binding site analogous to that of MDM2, which method comprises administering a effective amount of a compound, selected from the group consisting of a peptide having up to twenty eight amino acids which is able to disrupt or prevent binding between p53 and MDM2, or a functional peptide analogue thereof.Compounds for use in the method, methods for detecting such compounds and their application in the diagnosis and treatment of tumours is also described and claimed.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: June 23, 1998
    Assignee: University of Dundee
    Inventors: Steven Michael Picksley, David Philip Lane
  • Patent number: 5770385
    Abstract: Antibodies made to a flanking region GPR(31-98) in human gastrin-releasing peptide (GRP) precursor. Since the antibodies have high affinity to GRP precursor, and the GPR precursor is highly stable in the blood, then lung cancer, especially small cell lung cancer can be diagnosed with high reliability by detecting or measuring GRP precursor in the blood of a patient using the present antibodies.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: June 23, 1998
    Assignees: Tonen Corporation, Terumo Corporation
    Inventors: Ken Yamaguchi, Yoshio Miyake
  • Patent number: 5766908
    Abstract: An affinity support is provided containing a high flux semipermeable hydrogel membrane surface-modified with an affinity ligand, such as a protein which may be an antibody or enzyme, or a cell receptor complement, useful for affinity separation of biological macromolecules, including insoluble proteins, cells, and cell fragments, from solution. The exclusion limit (molecular weight cut-off) of the matrix is selected to substantially restrict immobilized protein or other ligand to the surface thereof for maximization of available ligand binding capacity. The exclusion limit is also selected to permit reagent(s) used for the matrix/ligand linkage to penetrate into and form covalent bonds with the membrane on the interior surfaces of the membrane for optimizing packing densities of the affinity ligand exterior to the membrane.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 16, 1998
    Assignee: Akzo Nobel NV
    Inventors: Elias Klein, Donald H. Yeager
  • Patent number: 5766962
    Abstract: Improved devices for collecting and analyzing samples of aqueous solutions, body fluids, sewage or fecal matter to be used in detecting microbes and microbial byproducts. A device in accordance with the invention comprises a body including an internal channel having an entryway, a solute chamber connected to the entryway, a solute-adding mechanism operatively connected to the solute chamber, a window in the body that allows viewing of a portion of the channel, and an aperture in the body that opens to the channel; a bendable tang connected to the body; and a sample collection unit attached to the tang.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Universal Healthwatch, Inc.
    Inventors: Mary Ann Childs, Mohammed A. Chowdhury, David Bernstein, Gregory K. Shipman, Erick Gray
  • Patent number: 5766963
    Abstract: A combinatorial library is disclosed which is represented by Formula ##STR1## wherein: ##STR2## is a solid support; T'-L- is an identifier residue; and -L'-II' is a ligand/linker residue. This library contains hydroxypropylamines of the formula:Aa.sup.1 -Aa.sup.2 -(CH.sub.2 Ar.sup.1)-CH.sub.2 CHOH-CH.sub.2 XR.sup.1IIwherein:Aa.sup.1 and Aa.sup.2 is each an amino acid joined to each other through an amide bond;Ar.sup.1 is an aromatic ring system;--CH.sub.2 Ar.sup.1 is attached to N on Aa.sup.2 ; andR.sup.1 is H, C.sub.1-20 alkyl, alkenyl, alkynyl, aryl, heteroaryl, aryl or heteroaryl fused to a 3- or 4-membered moiety to form a non-aromatic second ring, or substituted C.sub.1-20 alkyl, alkenyl, or alkynyl.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: June 16, 1998
    Assignee: Pharmacopeia, Inc.
    Inventors: John J. Baldwin, Ian Henderson, Frank S. Waksmunski
  • Patent number: 5763189
    Abstract: Particles comprising an energy donor as a first component and a fluorescent dye as a second component positioned in said particles at an energy exchanging distance from one another, wherein the two components have a Stokes shift of greater than or equal to 50 nm, said particle having bound on its surface, a protein, polypeptide, nucleic acid, nucleotide or protein containing ligand analogue are disclosed and claimed. In addition, novel fluorescent dyes are described which exhibit intramolecular energy transfer for use to label various molecules, proteins, polypeptides, nucleotides and nucleic acids or to incorporate into particles.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: June 9, 1998
    Assignee: Biosite Diagnostics Incorporated
    Inventors: Kenneth F. Buechler, J. Barry Noar, Lema Tadesse
  • Patent number: 5756363
    Abstract: An immunoagglutination reagent includes liposomes, as a carrier, with a covalently bound antigen or antibody immobilized thereon. The reagent is used to assay an antibody or an antigen on the basis of agglutination. The assaying can be done at a high sensitivity in the short wave region where the change in turbidity caused by the agglutination is enhanced. An antibody or an antigen is immobilized onto the surface of the liposome, and a water-soluble polymer compound or a gelled compound is entrapped in the liposomes. The substance entrapped in the immunoagglutination reagent enhances the change in turbidity via the agglutination caused by the antigen-antibody reaction.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: May 26, 1998
    Assignee: Nissui Pharmaceutical Co., Ltd.
    Inventors: Takahisa Ueno, Mamoru Umeda, Hideaki Shibata
  • Patent number: 5756362
    Abstract: A test device for detecting or quantifying an analyte in a test sample includes an absorbent material having separate contact and measurement portions. The contact portion is positioned at or proximate to a first end of the absorbent material. The measurement portion has a receptor for a conjugate of an analyte analog and marker-encapsulating liposomes. In a method for using the test device, a binding material specific for the analyte is combined with the liposome-analyte analog conjugate and the test sample to form a test mixture. The mixture is incubated for a time sufficient to permit competition between any analyte present and the conjugate for the binding material. Following incubation, the mixture is allowed to traverse the absorbent material from the contact portion through the measurement portion of the absorbent material.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: May 26, 1998
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Richard Allen Durst, Matthew A. Roberts
  • Patent number: 5753519
    Abstract: A test device for detecting or quantifying an analyte in a test sample includes an absorbent material having separate contact and measurement portions. The contact portion is positioned at or proximate to a first end of the absorbent material. The measurement portion has a receptor for a conjugate of an analyte analog and marker-encapsulating liposomes. In a method for using the test device, a binding material specific for the analyte is combined with the liposome-analyte analog conjugate and the test sample to form a test mixture. The mixture is incubated for a time sufficient to permit competition between any analyte present and the conjugate for the binding material. Following incubating, the mixture is allowed to traverse the absorbent material from the contact portion through the measurement portion of the absorbent material.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 19, 1998
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Richard Allen Durst, Matthew A. Roberts
  • Patent number: 5753497
    Abstract: This invention provides a device and method for preparing a plasma enriched sample for use in an immunoassay strip. All parts that contact blood or a blood fraction remain in a container and prevent contamination from used blood. In one embodiment a sampling device collects blood and enters the container. A plasma enriched sample fills a plasma receptor which in turn is transferred to an immunoassay strip. Plasma is washed out of the strip by an aqueous solution. In another embodiment the sampling device doubles as a plasma separator. The invention allows sensitive and safe immunoassays to be performed on whole blood samples outside of the normal clinical laboratory setting.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: May 19, 1998
    Assignee: Universal Health Watch Inc
    Inventors: David Bernstein, Mary Ann Childs, William Trainor
  • Patent number: 5750333
    Abstract: Disclosed are devices and methods for performing an assay which determines the presence or quantity of an analyte in a fluid sample by detecting binding of the analyte to at least one immobilized analyte capture reagent and washing unbound material from the immobilized analyte capture reagent. The devices and methods an elongated solid phase flow matrix, including capillary channels capable of driving capillary fluid movement, and further including (i) a first region adapted for receipt of the fluid sample, (ii) a second region at which the analyte capture reagent is immobilized, (iii) a third region for application of a wash reagent capable of removing unbound substances from the second region; and (iv) an absorbent reservoir of high volume capacity. The second region is positioned intermediate to the first region and the third region and intermediate to the absorbent reservoir and the third region. The device also includes means to detect analyte bound at the second region.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 12, 1998
    Assignee: IDEXX Laboratories, Inc.
    Inventor: Scott M. Clark
  • Patent number: 5747274
    Abstract: A diagnostic test, and a device for conducting the test, for assessing whether patient chest pain is cardiac in origin and for differentiating between unstable angina and myocardial infarction as a cause of patient chest pain is described. The diagnostic test comprises simultaneously detecting at least three selected cardiac markers with the use of at least three different monoclonal or polyclonal antibody pairs, each member of which is complementary to a different marker, which is released by heart muscle at varying stages after the onset of chest pain and is indicative of the cause of the chest pain.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: May 5, 1998
    Assignee: Spectral Diagnostics Inc.
    Inventor: George Jackowski
  • Patent number: 5744358
    Abstract: A diagnostic test, and a device for conducting the test, for assessing whether patient chest pain is cardiac in origin and for differentiating between unstable angina and myocardial infarction as a cause of patient chest pain is described. The diagnostic test comprises simultaneously detecting at least three selected cardiac markers with the use of at least three different monoclonal or polyclonal antibody pairs, each member of which is complementary to a different marker, which is released by heart muscle at varying stages after the onset of chest pain and is indicative of the cause of the chest pain.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: April 28, 1998
    Assignee: Spectral Diagnostics Inc.
    Inventor: George Jackowski
  • Patent number: 5739041
    Abstract: The invention is an improved single-step test device for detecting the presence of a pre-selected analyte in a urine stream. The device has a hollow outer casing and an assay material disposed within the casing. The outer casing defines: a urine inlet port; a viewing window; and at least one drainage vent spaced about the urine inlet port. The assay material is a sorptive material defining: a urine sample application region adjacent to, and in fluid communication with the urine inlet port; a capture region adjacent to the viewing window; and a fluid flow path for transporting liquid sample between the urine sample application region and the analyte capture region. The drainage vent is located to permit excess urine entering the casing from the urine stream to exit the casing thereby to minimize hydraulic pressure induced flooding of the assay material disposed within the casing and to reduce the frequency of false test results.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: April 14, 1998
    Assignee: Carter Wallace, Inc.
    Inventors: Albert Nazareth, Yea-Shun Cheng, Mary Beth Boyle
  • Patent number: 5731162
    Abstract: The present invention concerns a method and an analytical device for the simultaneous detection of at least two organisms selected from the group consisting of Chlamydia trachomatis (CT), Neisseria gonorrhea (NG), and Mycoplasma (M) from a single specimen.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: March 24, 1998
    Assignee: Boehringer Mannheim Italia S.p.A.
    Inventors: Guido Gatti, Laura Arcioni