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| Number | Title | Issue Date |
| 8017408 | Device and methods of detection of airborne agents Provided are methods, devices and systems that utilize free-surface fluidics and SERS for analyte detection with high sensitivity and specificity. The molecules can be airborne agents, including but not limited to explosives, narcotics, hazardous chemicals, or other... | 09/13/2011 |
| 7189575 | Method and device for determining the swelling behavior of polymer gels under pressure Disclosed is a method for determining the swellability and the swelling kinetics of superabsorbent material (9) such as polymer gels, for example, which comprises introducing a defined volume of the dry superabsorbent material (9) into a measuring vess... | 03/13/2007 |
| 7163660 | Arrangement for taking up liquid analytes Apparatus for taking up liquid analytes having a microtitre plate with a plurality of wells and a plurality of pipettes, as well as a pump, which is coupled to several pipettes in such a way that an analytes can be simultaneously sucked out of several wells or intro... | 01/16/2007 |
| 7087434 | Automatic portable formaldehyde analyzer An apparatus for measuring the concentration of formaldehyde in an exhaust stream from turbines, internal combustion engines and the like, which apparatus includes a portable housing having a sample gas inlet through which a sample gas for analysis is introduced int... | 08/08/2006 |
| 7049683 | Semiconductor package including organo-metallic coating formed on surface of leadframe roughened using chemical etchant to prevent separation between leadframe and molding compound A semiconductor package contains a metal leadframe that has been specially treated by roughening it with a chemical etchant. The roughening process enhances the adhesion between the leadframe and the molten plastic during the encapsulation of the leadframe and there... | 05/23/2006 |
| 7045296 | Process for analyzing protein samples Methods using gel electrophoresis and mass spectrometry for the rapid, quantitative analysis of proteins or protein function in mixtures of proteins derived from two or more samples in one unit operation are disclosed. In one embodiment the method includes (a) prepa... | 05/16/2006 |
| 7040142 | Method and apparatus for leak detection in blood circuits combining external fluid detection and air infiltration detection One of the most significant safety concerns in the automation of extracorporeal blood treatments such as dialysis is the risk of blood leakage. Extracorporeal blood treatment systems draw blood at such a high rate that a loss of integrity in the blood circuit can be... | 05/09/2006 |
| 7013708 | Carbon nanotube sensors Nanotubes and nanotube-based devices are implemented in a variety of applications. According to an example embodiment of the present invention, a nanotube is doped with an impurity atom and used to detect the presence of a particular molecular species as a function ... | 03/21/2006 |
| 6852544 | Rapid quantitative analysis of proteins or protein function in complex mixtures Analytical reagents and mass spectrometry-based methods using these reagents for the rapid, and quantitative analysis of proteins or protein function in mixtures of proteins. The methods employ affinity labeled protein reactive reagents having three portions: an aff... | 02/08/2005 |
| 6808928 | Desorptive method for determining a surface property of a solid A method of determining a surface property of a plurality of solids by contacting the solids with a fluid, measuring the radiation emitted, absorbed, or altered during desorption of the fluid using a detector, and then determining at least one surface property of th... | 10/26/2004 |
| 6806091 | Method and apparatus for determining blood oxygen transport The present invention relates to a method and apparatus for determining blood oxygen transport, and to measure lipid levels by correlating these levels with the rate at which oxygen diffuses through the red blood cell membrane. ... | 10/19/2004 |
| 6806092 | Combustion gas detection system A combustion gas detection apparatus includes a transparent tube partially filled with a combustion gas sensing fluid and an inlet fitting for engagement with the radiator cap of an engine cooling system and an outlet fitting connected with a vacuum port of the engi... | 10/19/2004 |
| 6770490 | Membrane immunobead assay for the detection of ciguatoxin and related polyether marine toxins An immunological test kit suitable for the rapid detection of ciguatoxin and related low molecular weight lipid polyether marine toxins in fish tissues in the field, home or laboratory. The test procedure utilizes a synthetic membrane laminated onto one end of a sol... | 08/03/2004 |
| 6764856 | Semen detection system and method The present invention is directed to a system and method for detecting the presence of semen on material. The system includes a solution of sodium phosphate, maleic acid, dye fast blue salt, naphthyl acid phosphate and deionized water, together with a solution dispe... | 07/20/2004 |
| 6670194 | Rapid quantitative analysis of proteins or protein function in complex mixtures Analytical reagents and mass spectrometry-based methods using these reagents for the rapid, and quantitative analysis of proteins or protein function in mixtures of proteins. The methods employ affinity labeled protein reactive reagents having three porti... | 12/30/2003 |
| 6642057 | Methods for the detection of harmful substances or traces thereof The presence of carcinogens in air, soils, and other areas is detected by combining liquid-assisted air sampling with means for testing liquid samples for mutagenicity. Hazardous or illicit substances or pathogens which may be buried in the ground or othe... | 11/04/2003 |
| 6403298 | Method and apparatus for urine self-test intended for use in a toilet A method and apparatus for urine self testing wherein the apparatus is placed directly into the toilet after urination which avoids the direct placement and retention of an apparatus in the stream of urine as is common with urine testing devices. The appa... | 06/11/2002 |
| 6368870 | Controlled diffusion analysis A method is described for determining the presence of a volatile component in a test sample. The method involves use of two separate vessels, one of which is capable of being placed wholly within the other vessel. The test sample is placed in the larger v... | 04/09/2002 |
| 6306665 | Covalent bonding of molecules to an activated solid phase material Microporous solid phase materials that are suitable for lateral flow and other assays for detecting the presence of analytes in test samples, that are stable under variations in humidity and, even after storage for extended periods of time, can form stabl... | 10/23/2001 |
| 6306609 | Methods for the detection of nitric oxide in fluid media In accordance with the present invention, there are provided articles for use in non-invasive measurements of nitric oxide levels in a variety of fluid media, e.g., in mammalian body fluids. Articles according to the present invention comprise a nitric ox... | 10/23/2001 |
| 6277647 | Test strip incubation device A test strip incubation device and method for developing a test strip having a reagent test pad disposed thereon, the reagent test pad requiring an incubation time, which allows greater accuracy and reliability of test results as well as a narrower window... | 08/21/2001 |
| 6132682 | Test strip incubation device A test strip incubation device and method for developing a test strip having a reagent test pad disposed thereon, the reagent test pad requiring an incubation time, which allows greater accuracy and reliability of test results as well as a narrower window... | 10/17/2000 |
| 6027943 | Immunoassay devices and materials An immunochemical assay device comprising a base member, an array disposed on the base member, and at least one assay indicia zone. The array comprises (i) a reservoir pad to receive sample liquid, (ii) a wicking membrane, and (iii) at least one filter zo... | 02/22/2000 |
| 5939329 | Test strip incubation device and method A test strip incubation device and method for developing a test strip having a reagent test pad disposed thereon, the reagent test pad requiring an incubation time, which allows greater accuracy and reliability of test results as well as a narrower window... | 08/17/1999 |
| 5891732 | Method for determining foaming behavior of a liquid The invention relates to a method for determining foaming behavior of a liquid by use of a gas, which includes supplying the gas to an amount of the substantially gas-free liquid to form a foam and analyzing one or more properties of the foam, wherein the... | 04/06/1999 |
| 5885842 | Methods for the detection of nitric oxide in fluid media Non-invasive methods have been developed for the measurement of NO levels in a variety of fluid media, e.g., body fluids. The present invention embraces the use of a semi-permeable vessel wherein said vessel contains an NO reacting substance to trap NO di... | 03/23/1999 |
| 5849596 | Process for determining the smoke content of edible oil The present invention provides a process for determining the smoke content of an edible oil of a given amount, which comprises heating the edible oil to a temperature necessary to generate smoke; collecting the generated smoke by sulfuric acid; and determ... | 12/15/1998 |
| 5789253 | Methods for rapid equalibration of dissolved gas composition An apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of determining the c... | 08/04/1998 |
| 5609824 | Methods and apparatus for rapid equilibration of dissolved gas composition Disclosed is an apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of dete... | 03/11/1997 |
| 5605664 | Methods and apparatus for rapid equilibration of dissolved gas composition Disclosed is an apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of dete... | 02/25/1997 |
| 5567626 | Method of detecting biological materials using a polyvinyllidene fluoride membrane The present invention provides an improved method of detecting or transferring a biological material whereby a biological material is adhered to a membrane which is then contacted with a detecting reagent, wherein the improvement comprises utilizing a pol... | 10/22/1996 |
| 5514593 | Time averaged toxic metals monitoring method An improved device for monitoring the presence of toxic metals in workplace air comprises a base and a removable top assembly. The top assembly includes a test substrate, such as filter paper, having a first surface and a second surface. The first surface... | 05/07/1996 |
| 5490971 | Chemical detector Apparatus for chemical detection includes a cap for coupling with a sample vial containing a sample. The sample includes at least one chemical to be detected. The cap includes a reagent vial which contains a liquid reagent. The reagent vial includes a mem... | 02/13/1996 |
| 5397537 | Test instrument A test instrument for uniformly spreading a collected specimen on a reagent layer has a first opening for collecting the specimen, a specimen spreading layer having an upper surface a portion of which is exposed to the first opening, the reagent layer pro... | 03/14/1995 |
| 5328851 | High-throughput liquid-absorption preconcentrator sampling methods A system for detecting trace concentrations of an analyte in air includes a preconcentrator for the analyte and an analyte detector. The preconcentrator includes an elongated tubular container comprising a wettable material. The wettable material is conti... | 07/12/1994 |
| 5252458 | Method for visually detecting the presence of a virus in a clinical specimen A rapid and direct assay for detecting of a virus having a characteristic enzyme in clinical samples in which (1) the clinical sample is contacted in solution with a substrate for the enzyme which includes a chromogen that is cleaved from the substrate by... | 10/12/1993 |
| 5244810 | Analytical method A fiber-optic sensor or analytical apparatus and associated method which utilizes the combination of (a) a solid, semi-solid or liquid sensor body which is capable of selectively dissolving the analyte compound to be detected and analyzed into the sensor ... | 09/14/1993 |
| 5183742 | Test device for detecting glucose, protein urobilinogen, and/or occult blood in body fluids and/or determining the PH thereof A test device having the following meritorious effects is obtained in accordance with the present invention by using at least one composition selected from the group consisting of ink compositions for detecting glucose, for detecting protein, for detectin... | 02/02/1993 |
| 5173264 | High throughput liquid absorption preconcentrator sampling instrument A system for detecting trace concentrations of an analyte in air includes a preconcentrator for the analyte and an analyte detector. The preconcentrator includes an elongated tubular container comprising a wettable material. The wettable material is conti... | 12/22/1992 |
| 5153141 | Method of determining pH by the alkaline absorption of carbon dioxide A method for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a re... | 10/06/1992 |
