Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8114672 | Method for analyzing antimony contained in glass According to one embodiment, there is provided a method of analyzing antimony contained in glass according to its valency. This method includes milling glass containing antimony into a glass powder, weighing the glass powder and dissolving the glass powder by using ... | 02/14/2012 |
| 8110402 | Metal abstraction peptide (MAP) tag and associated methods Compositions comprising a tripeptide having the sequence XC1C2; wherein X is any amino acid such that XC1C2 is capable of binding a metal in a square planar orientation or square pyramidal orientation or both; and wherein ... | 02/07/2012 |
| 8053241 | Arsenic-specific stain for identifying arsenic-treated wood A novel reagent is used to identify arsenic-treated wood. The stain may detect arsenic extracted from wood into solution; arsenic transferred from wood to a wipe, which is then extracted into solution; or the stain may be directly applied at a predetermined location... | 11/08/2011 |
| 8030082 | Liquid-particle analysis of metal materials The invention includes a method of detecting impurities in a metal-containing article. A portion of metal material is removed from a metal article and is solubilized in an acid or base-comprising liquid to produce a liquid sample. The liquid sample is subjected to a... | 10/04/2011 |
| 7927879 | Zirconium crucible for melting analytical sample, method of preparing analytical sample and method of analysis Proposed is a zirconium crucible used for melting an analytical sample in the pretreatment of the analytical sample, wherein the purity of the zirconium crucible is 99.99 wt % or higher. In light of the recent analytical technology demanded of fast and accurate meas... | 04/19/2011 |
| 7875459 | Method and apparatus for managing denitration catalyst Data on a secular change of each denitration catalyst is managed based on data obtained by a periodic maintenance and a daily management. Management of a secular change and prediction on performance variations that occur until a next periodic check is performed. It ... | 01/25/2011 |
| 7691637 | Method and apparatus for ion sequestration and a nanostructured metal phosphate A nanostructured substance, a process for sequestration of ionic waste, and an ion-sequestration apparatus are disclosed in the specification. The nanostructured substance can comprise a Lewis acid transition metal bound to a phosphate, wherein the phosphate compris... | 04/06/2010 |
| 7473558 | Marker useful for detection and measurement of free radical damage and method The present invention teaches a marker useful for detection and measurement of free radical damage. Specifically, the invention takes advantage of alterations which occur to the N-terminus of the albumin molecule, a circulating protein in human blood, in the presenc... | 01/06/2009 |
| 7439070 | Waste material handling, sampling and metal content value calculation A bulk sample is fed with a liquid into a mixing tank (1) where it is stirred to form a dispersion. A proportion of the dispersion is recycled from the bottom of the tank through a line to the top of the tank so that at least the dispersion in the recycle loo... | 10/21/2008 |
| 7435597 | Assays for zero-valent transition metals in sedimentary rocks using carbon monoxide with application to oil and gas exploration The present invention is directed to novel assays for zero-valent transition metals. The novel assays of the present invention are generally methods or processes for quantitatively and/or qualitatively evaluating the presence of zero-valent transition metals on and/... | 10/14/2008 |
| 7416699 | Carbon nanotube devices Nanotubes and nanotube-based devices are implemented in a variety of applications. According to an example embodiment of the present invention, a nanotube is adapted to pass current between two conductive elements. In one implementation, each conductive element incl... | 08/26/2008 |
| 7399639 | Sensors, and methods of making and using the same The present invention is directed, in part, to sensors for detecting metal ions, and methods of making and using the same. ... | 07/15/2008 |
| 7393693 | Methods and procedures for stabilization and performance optimization of multi-layer sol-gel chemical and biochemical sensors A sensor and method for making a sensor includes providing a substrate having an adhesion layer with a first functional group operatively associated with a sol-gel composition having a second functional group, and at least one linker material for connecting the firs... | 07/01/2008 |
| 7384789 | Divalent metal ion sensors and binders Diamino polyacetate benzene compounds are used as a selective fluorescence probe, sensor, or binders for divalent metal ions. The compounds provide for uses as divalent metal ion sensors in diagnostic applications and binders for environmental and medical treatments... | 06/10/2008 |
| 7378281 | Process to measure PPB levels of dissolved copper in jet fuels and other non-aqueous fluids using a colorimetric process A method of measuring the concentration of metal ions in a sample comprising the steps of: providing a sample comprising a nonpolar, liquid hydrocarbon, suspected of containing a metal ion; adding a dye such as a spirobenzopyran dye or bathocuproine and a reducing a... | 05/27/2008 |
| 7354553 | Method and apparatus for detecting the presence of elemental mercury in a gas sample An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an emission gas sample, via fluorescence of the mercury within the gas sa... | 04/08/2008 |
| 7354733 | Method for sorting and separating living cells We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a... | 04/08/2008 |
| 7344768 | Active energy ray curable composition for coating optical disk and optical disk The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acr... | 03/18/2008 |
| 7341771 | Active energy ray curable composition for coating optical disk and optical disk The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acr... | 03/11/2008 |
| 7336362 | Arsenic meter A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light thro... | 02/26/2008 |
| 7315375 | Reagents for arsenic meter A formulation for preparing water samples for determining arsenic concentration by colorimetry is provided. The chemical reagents in the formulation may be provided as premeasured and premixed tablets or pills. The chemical reagents include sulfamic acid, an oxidize... | 01/01/2008 |
| 7315667 | Propagating light to be sensed Light to be sensed is spreaded across an entry surface of a transmission structure with a laterally varying energy transmission function. For example, the light could be output from a stimulus-wavelength converter, provided through an optical fiber, or it could come... | 01/01/2008 |
| 7312083 | Control value assignment method A method of assigning expected recovery values to control substances used in analytical testing is disclosed. ... | 12/25/2007 |
| 7297547 | Analysis of metals in acidic solutions In one embodiment, a method of neutralizing the matrix of an acidic solution including at least one metal using a weak anion exchange resin is provided. The method includes the acts of: activating the weak anion exchange resin with a weakly acidic metal complexing r... | 11/20/2007 |
| 7288414 | Use of phosphonazo III for the measurement of calcium, magnesium and sodium in analytical samples Novel reagent formulations and methods are described for the use of phosphonazo III to measure calcium, magnesium and sodium in biological fluids. ... | 10/30/2007 |
| 7285419 | Analysis of mercury containing samples Methods of analyzing mercury containing samples for inorganic and organomercurial complexes are disclosed. The methods are highly sensitive and are especially suited to samples containing significant amounts of organic matter. Kits and devices for mercury analysis a... | 10/23/2007 |
| 7286943 | In-vehicle electronic device, thermal flowmeter and electronic circuit board Radio-frequency currents vary phases of the radio-frequency voltages appearing at both positive and negative input terminals of an operational amplifier depending on inductance and resistance of conductors forming an electronic device. If the phases of radio-frequen... | 10/23/2007 |
| 7273588 | Methods of sampling halosilanes for metal analytes Methods for determining the amount of at least one metal analyte present in a liquid or gas sample of a halosilane supply (e.g., a chlorosilane supply) are disclosed herein. A sample of a halosilane supply is contacted and reacted with an aqueous hydrofluoric acid s... | 09/25/2007 |
| 7267990 | Chelation of charged and uncharged molecules with porphyrin-based compounds Porphyrins containing one or more neutral or negatively-charged, closo- or nido-carborane substituents are useful as chelators. The carbon-carbon bonds linking the boron-containing groups to the porphyrin ring make the compounds highly resistant to hydrolysis. These... | 09/11/2007 |
| 7265213 | Methodology of conjugating chelators to biomolecules A novel method of conjugating chelators to biomolecules such as proteins is provided. More particularly, the invention provides compositions and methods of using those compositions for the detection, purification and transport of divalent metal cation binding biomol... | 09/04/2007 |
| 7247489 | Ion-detecting microspheres and methods of use thereof This invention provides methods of using ion-detecting microspheres containing an ionphore and a chromoionphore in clinical laboratory instrumentation such as flow cytometry for sample analysis. In one embodiment, the microspheres are contacted with a flowing stream... | 07/24/2007 |
| 7241623 | Lithium detection in liquid biological samples and reagents therefor A method of detecting soluble lithium in a liquid biological sample comprising combining: (a) an amount of the biological sample; (b) 2,3,7,8,12,13,17,18-octobromo-5,10,15,20-tetrakis(4-sulphonatophenyl) porphyrin; (c) alkali; (d) detergent; (e) chelating agent; and... | 07/10/2007 |
| 7229833 | Method and a device for measuring, by photo-spectrometry, the concentration of harmful gases in the fumes through a heat-producing plant A method for measuring the concentration of harmful gases in flue gases through a heat-producing plant that includes a combustion space and a device located downstream of the combustion space, the device includes tubes, through which for instance water, steam or air... | 06/12/2007 |
| 7226563 | Ion-detecting sensors comprising plasticizer-free copolymers Plasticizer-free ion-detecting sensors for detecting a target ion in a sample are provided. The sensor comprises a plasticizer-free copolymer comprised of polymerized units of methacrylate monomers and a polymerizable ion exchanger, wherein the methacrylated monomer... | 06/05/2007 |
| 7220809 | Optical material containing fluorine-containing polymer having functional group There is provided an optical material obtained from an organic composition which is suitable for an optical material in optical communication and comprises a fluorine-containing polymer having functional group and a rare earth metal ion, in which the fluorine-contai... | 05/22/2007 |
| 7220383 | Method and instrument for automated analysis of fluid-based processing systems An analytical apparatus to monitor fluid systems has at least one extraction module having a raw-sample reservoir connected by input fluid conduit to individual ones of said fluid systems, to extract raw samples for analysis from said fluid systems, one or more modi... | 05/22/2007 |
| 7214538 | Device and method for the determination of lithium ion concentration in a biological fluid The present invention relates to a novel device and method for the detection of lithium ions in a biological fluid. In a preferred embodiment, the present invention provides a novel compound and a optical sensor which incorporates said compound for the detection of ... | 05/08/2007 |
| 7211635 | Optical material containing curable fluorine-containing polymer There can be obtained a suitable optical material which has a stable structure with a rare earth metal ion while maintaining transparency in a region of from visible light to near infrared light. The optical material is obtained by curing a fluorine-containing resin... | 05/01/2007 |
| 7208121 | Plasticizer-free-ion-detective sensors A plasticizer-free ion detective sensor for detecting a target ion in a sample is provided. The sensor comprises a copolymer of methacrylate monomers with pendant alkyl groups of different length, and an ionophore for detecting the target ion. The copolymer matrix o... | 04/24/2007 |
| 7205153 | Analytical reagent for acid copper sulfate solutions Embodiments of the invention provide an analytical method and analytical reagent solutions for determining the concentration of electrolyte components, such as copper, acid and chloride constituents in an acid or basic metal plating bath using a chemical analyzer. C... | 04/17/2007 |
