Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 6271040 | Diagnostic devices method and apparatus for the controlled movement of reagents without membranes The assay devices, assay systems and device components of this invention comprise at least two opposing surfaces disposed a capillary distance apart, at least one of which is capable of immobilizing at least one target ligand or a conjugate in an amount r... | 08/07/2001 |
| 6037455 | Propoxyphene derivatives and protein and polypeptide propoxyphene derivative conjugates and labels The present invention is directed to novel propoxyphene derivatives which are synthesized for the covalent attachment to antigens (proteins or polypeptides) for the preparation of antibodies or receptors to propoxyphene and propoxyphene metabolites. The r... | 03/14/2000 |
| 5947124 | Diagnostic for determining the time of a heart attack The present invention relates to methods for determining the time of a myocardial infarction in a patient by measuring the ratio of oxidized to reduced troponin I in a blood sample obtained from the patient. This ratio is measured through the use of two o... | 09/07/1999 |
| 5939272 | Non-competitive threshold ligand-receptor assays Assay methods for performing non-competitive ligand-receptor assays, where said assays provide a sensible result when the target ligand identified by the assay is present at a concentration greater than a defined threshold concentration. The threshold con... | 08/17/1999 |
| 5922615 | Assay devices comprising a porous capture membrane in fluid-withdrawing contact with a nonabsorbent capillary network Devices for use in heterogeneous ligand-receptor assays, having a porous member in contact with a nonabsorbent textured surface, where the surface texturing is such that a capillary network is formed when in fluid communication with the porous member. Mor... | 07/13/1999 |
| 5824799 | Hybrid phthalocyanine derivatives and their uses Water soluble hybrid phthalocyanine derivatives useful in competitive and noncompetitive assays immunoassays, nucleic acid and assays are disclosed and claimed having (1) at least one donor subunit with a desired excitation peak; and (2) at least one acce... | 10/20/1998 |
| 5795725 | Methods for the assay of troponin I and T and selection of antibodies for use in immunoassays Assays and antibodies are disclosed for the detection and quantitation of cardiac specific troponin I and troponin T in body fluids as an indicator of myocardial infarction. Since troponin I and T exist in various conformations in the blood, the ratios of... | 08/18/1998 |
| 5763189 | Fluorescence energy transfer and intramolecular energy transfer in particles using novel compounds 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 t... | 06/09/1998 |
| 5710256 | Methadone derivatives and protein and polypeptide methadone derivative conjugates and labels The present invention is directed to novel methadone derivatives which are synthesized for the covalent attachment to antigens (proteins or polypeptides) for the preparation of antibodies or receptors to methadone and methadone metabolites. The resulting ... | 01/20/1998 |
| 5679526 | Threshold ligand-receptor assay This invention is directed to a ligand-receptor assay for determining the presence of at least one target ligand, capable of competing with a ligand analogue conjugate for binding sites available on a ligand receptor, said ligand analogue conjugate compri... | 10/21/1997 |
| 5610283 | Opiate derivatives and protein and polypeptide opiate derivative conjugates and labels The present invention is directed to novel opiate derivatives which are synthesized for the covalent attachment to antigens (proteins or polypeptides) for the preparation of antibodies or receptors to the opiates and opiate metabolites. The resulting nove... | 03/11/1997 |
| 5470997 | Amphetamine derivatives and protein and polypeptide amphetamine derivative conjugates and labels The present invention is directed to novel amphetamine derivatives which are synthesized for the covalent attachment to antigens (proteins or polypeptides) for the preparation of antibodies or receptors to amphetamine and amphetamine metabolites. The resu... | 11/28/1995 |
| 5331109 | Phencyclidine derivatives and protein and polypeptide phencyclidine derivative conjugates and labels The present invention is directed to novel PCP derivatives which are synthesized for the covalent attachment to antigens or receptors (proteins or polypeptides) for the preparation of antibodies or receptors to PCP and PCP analogue metabolites. The result... | 07/19/1994 |
| 5302703 | Tetrahydrocannabinol derivatives and protein and polypeptide tetrahydrocannabinol derivative conjugates and labels The present invention is directed to novel THC derivatives which are synthesized for the covalent attachment to antigens (proteins or polypeptides) for the preparation of antibodies or receptors to the THC metabolites. The resulting novel antigens may be ... | 04/12/1994 |
