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| Number | Title | Issue Date |
| 5755269 | Fluid delivery system A fluid delivery system for aspirating liquid from a bottle and conveying the liquid to an analytical instrument while allowing ambient air or gas to enter the bottle to replace the aspirated liquid. The bottle opening is sealed by a valve. A tube extends... | 05/26/1998 |
| 5503719 | Extended use planar sensors A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except those portions which define a working electrode and at least o... | 04/02/1996 |
| 5503036 | Obstruction detection circuit for sample probe An obstruction detection circuit for detecting an obstruction of a sample probe of an automated sample aspiration/dispensation device and a method for detecting such an obstruction. In one embodiment the obstruction detection circuit includes a pressure s... | 04/02/1996 |
| 5494562 | Electrochemical sensors A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered t... | 02/27/1996 |
| 5437838 | Clinical laboratory work-flow system A multi-tasking clinical laboratory work-flow system for test sample and reagent transfer to semi-automate various laboratory assays. The system includes a controller having a menu of protocols which provide format instructions to a robotic sample transfe... | 08/01/1995 |
| 5407798 | Amplification of midivariant DNA templates New methods are provided for the amplification of a midivariant DNA containing an inserted target specific nucleic acid sequence(s) to enable detection of the presence of a target nucleic acid sequence in a test sample. One method employs midivariant DNA ... | 04/18/1995 |
| 5401376 | Electrochemical sensors An electrochemical sensor having a substrate, conductive strips deposited on the substrate, and a layer insulating portions of the conductive strips except those portions which define a working electrode and at least one second electrode. A solid electrol... | 03/28/1995 |
| 5395752 | Long emission wavelength chemiluminescent compounds and their use in test assays An assay method incorporating at least two different chemiluminescent compounds for detection and/or quantitation of at least two substances in a test sample is described. The synthesis of chemiluminescent reagents or conjugates for use in such methods as... | 03/07/1995 |
| 5394047 | Ultrasonic transducer control system A control system for providing a drive signal to an ultrasonic transducer and for controlling the tip motion of the ultrasonic transducer wherein the transducer tip is disposed in a hemolyzing chamber. The control system includes a sensor for sensing the ... | 02/28/1995 |
| 5346832 | Homogeneous amperometric immunoassay A method is described for measuring the amount of analyte present in a sample containing the analyte using a homogeneous amperometric immunoassay. The analyte is chemically bonded to a suitable carrier molecule, which is also chemically bonded to an elect... | 09/13/1994 |
| 5340715 | Multiple surface evanescent wave sensor with a reference An evanescent wave sensor and method for use in analyzing one or more media, the sensor including a waveguide having first and second wave propagating surfaces. The waveguide propagates an input signal along the waveguide between the first and second surf... | 08/23/1994 |
