Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8048682 | Device and method for detecting sulfur dioxide at high temperatures The present invention relates to a method for selectively detecting and/or measuring gaseous SO2 at a temperature of at least 500° C., the method involving: (i) providing a SO2-detecting device including an oxygen ion-conducting substrate havi... | 11/01/2011 |
| 7427378 | Analysis method and apparatus for sulfur component using ultraviolet fluorescence An analysis method and analysis apparatus involve analysis for a sulfur component using ultraviolet fluorescence capable of removing the interferential influence of NO with good efficiency and certainty to thereby measure a concentration of only sulfur components su... | 09/23/2008 |
| 7297549 | Method of determining measurement bias in an emissions monitoring system A method of determining bias in a measurement of a constituent concentration level in a sample gas is provided. The method comprises establishing a sample gas flow from an emission stream into a sample gas line of an emissions monitoring system. The method further c... | 11/20/2007 |
| 7268355 | Excimer UV fluorescence detection A UV fluorescence detection system is provided comprising a dielectric barrier-discharge excimer lamp, an applied excitation source for communication with the excimer lamp; a fluorescence chamber having a sample gas containing sulfur dioxide, a light sensitive detec... | 09/11/2007 |
| 7244395 | Apparatus for trace sulfur detection using UV fluorescence A method and system for performing low level sulfur UV fluorescence measures including an UV interference reduction system which removes or destroys interfering nitrogen oxides. The preferred nitrogen removal systems include introducing ozone into the system in suff... | 07/17/2007 |
| 7062385 | Intelligent electro-optical nucleic acid-based sensor array and method for detecting volatile compounds in ambient air The present invention generally relates to nucleic acid-based sensors and methods for detecting volatile analytes. More particularly, this invention relates to nucleic acid-based optical sensors, sensor arrays, sensing systems and sensing methods for intelligent sen... | 06/13/2006 |
| 7029951 | Cooling system for a semiconductor device and method of fabricating same A cooling system for a semiconductor substrate incudes a plurality of trenches formed from a backside of the semiconductor substrate, and thermally conductive material deposited in the plurality of trenches. A method of forming cooling elements in a semiconductor su... | 04/18/2006 |
| 7029920 | Method and system for monitoring combustion source emissions A method and system for determining a concentration level of NOx in an exhaust stream from a combustion source. The method comprises capturing sample gas from the exhaust stream using a sampling device. NO2 in the sample gas is converted to NO ... | 04/18/2006 |
| 6933151 | Diagnostic system for monitoring catalyst performance A diagnostic system for monitoring catalyst performance in an exhaust system comprises a plurality of treatment devices catalytically treating an exhaust gas stream, and a plurality of gas sensors for monitoring the catalyst performance of the treatment devices to d... | 08/23/2005 |
| 6852543 | Method and apparatus for measurement of sulfate A method and apparatus for sulfate analysis in a sample are provided. A portion of the sulfate contained in the sample is converted to sulfur dioxide, and at least a portion of the sulfur dioxide can be determined. The amount of sulfur dioxide determined can be used... | 02/08/2005 |
| 6803236 | Diagnostic system for monitoring catalyst performance A diagnostic system for monitoring catalyst performance in an exhaust system comprises a plurality of treatment devices catalytically treating an exhaust gas stream, and a plurality of gas sensors for monitoring the catalyst performance of the treatment devices to d... | 10/12/2004 |
| 6649356 | Apparatus and method for detecting and identifying infectious agents Solid phase methods for the identification of an analyte in a biological medium, such as a body fluid, using bioluminescence are provided. A chip designed for performing the method and detecting the bioluminescence is also provided. Methods employing biom... | 11/18/2003 |
| 6623699 | Analyzing system for high accuracy nitrogen determination An analyzer compensates for gas flow perturbations by providing a makeup flow of carrier gas to maintain the pressure and/or flow rate of analyte and inert gas through a detector constant such that a accurate determination of a low concentration of an ana... | 09/23/2003 |
| 6495341 | Method and apparatus for monitoring a physical or chemical conversion of a grain material The present invention is a method and apparatus for monitoring, preferably in real time, the physical or chemical conversion of a grain material. The method employs multivariate analysis of a collected sample. In a preferred embodiment a steeping conversi... | 12/17/2002 |
| 6472223 | Method and system for continuously monitoring and controlling a process stream A method for directly monitoring and controlling a continuous process stream for dechlorination residual is provided. A sample stream to which a dechlorination agent has been added to completely eliminate a residual disinfectant is continuously drawn off.... | 10/29/2002 |
| 6399391 | Low cost total reduced sulfur analysis system A system and apparatus for analyzing stack gas for total reduced sulfur. The gas is withdrawn from a stack through a probe, filtered and regulated to a known temperature. The gas is then passed through a scrubbing column to remove sulfur dioxide and split... | 06/04/2002 |
| 6205841 | Gas chromatograph Mass flow controllers are respectively placed in the middle of a hydrogen gas tube and air tube connected to a FPD. The flow controllers are controlled to supply hydrogen and oxygen from the nozzle to achieve the optimum mixture rate of hydrogen and oxyge... | 03/27/2001 |
| 6046054 | Semiconducting oxide gas sensors The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the applications described, which include detection of hydrocarbons in th... | 04/04/2000 |
| 6010664 | Oxidation detection for sulfite/sulfate systems A method for monitoring the oxidation rate in a flue gas desulfurization system having a slurry comprises locating a monitor in the system for accessing the slurry. A sample is periodically drawn from the slurry by the monitor wherein a titration is perfo... | 01/04/2000 |
| 5994144 | Simplified environmental atmosphere measuring method When adsorbed gas is analyzed after metal, ceramics or metallic salt has been left in an environmental atmosphere for a predetermined period of time, an average concentration of specific gas over a long period of time can be accurately measured with an in... | 11/30/1999 |
| 5948689 | Integrated thermal coupling for heat generating device In order to provide a thermal coupling between a heat source and a heat sink, an integrated interleaved-fin connector is provided. A first substrate includes a first side surface and a second side surface. A plurality of heat generating devices are formed... | 09/07/1999 |
| 5869342 | Method and system for continuously monitoring and controlling a process stream for dechlorination residual A method for determining the amount of residual disinfectant removing agent in a process stream to which the disinfectant removing agent has been added to completely remove a disinfectant residual, comprising the steps of: (a) drawing off a sample of the ... | 02/09/1999 |
| 5846831 | Methods and systems for controlling flow of a diluted sample and determining pollutants based on water content in engine exhaust emissions In a first embodiment of the present invention, a control method and system are provided in an exhaust emission sampling system for controlling a flow controller in order to compensate for the effects of changing water vapor content in a diluted sample ha... | 12/08/1998 |
| 5739038 | Spectrometer gas analyzer system A gas analyzer system for providing a spectroscopic analysis of the sample gas. This analysis is accomplished by first introducing the sample gas into the inlet of the system and transporting it to a spectral analyzer. The sample gas is then spectrally an... | 04/14/1998 |
| 5661036 | Process for the detection of sulfur A process and apparatus are disclosed for the detection and measurement of sulfur in both organic and inorganic sulfur-containing compounds. The process includes admixing a sample including a sulfur-containing compound with oxygen, and then exposing the m... | 08/26/1997 |
| 5547876 | Combustion accelerators, processes for their production and processes for their use in elemental analysis Non-toxic combustion decomposition accelerators and processes for their production for elemental analysis. The non-toxic accelerators may be either single component or multicomponent. The single component non-toxic accelerators are glass frit, niobium pen... | 08/20/1996 |
| 5501981 | Method and apparatus for chemiluminescent detection of sulfur An improved method and apparatus for the measurement of sulfur compounds is described. The system comprises a dual burner assembly for the conversion of sulfur-containing compounds to form sulfur monoxide and subsequent detection of sulfur monoxide by ozo... | 03/26/1996 |
| 5496521 | Analyzing device including an ion-permeable channel connecting a sample chamber with a reaction space In a device for determining the concentration of a reagent from a group consisting of gases with acid or alkaline reaction in aqueous environments, and volatile acids and bases in liquid or gaseous samples, a sample chamber is situated in a housing and a ... | 03/05/1996 |
| 5424217 | Process for the detection of sulfur A process and apparatus are disclosed for the detection and measurement of sulfur in both organic and inorganic sulfur-containing compounds. The process includes admixing a sample including a sulfur-containing compound with oxygen, and then exposing the m... | 06/13/1995 |
| 5401662 | Method and reagent for the determination of water In the method for the determination of water, the sample is admixed with a molar 1:1 adduct of sulphur dioxide with an amine having a pKA of more than 6, dissolved in an aprotic solvent, and is oxidized with iodine.... | 03/28/1995 |
| 5385830 | Apparatus for measuring free and total sulfurous acid and method of measurement The present invention provides a method for measuring the amount of free sulfurous acid and bound sulfurous acid in a sample using a bacterium belonging to Thiobacillus thiooxidans or Thiobacillus ferrooxidans of in which the sample is treated with acid a... | 01/31/1995 |
| 5338515 | SO2 sensor This invention is a process for detecting low concentration levels of sulfur oxides (SO2) in a flowing gas stream (typically a combustion exhaust gas stream) and a catalytic SO2 sensor system which may be used in that process.... | 08/16/1994 |
| 5330714 | Process and apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds The present invention describes the process and apparatus for the simultaneous measurement of sulfur-containing compounds and organic compounds with or without sulfur in their structures. A detector cell is described that allows simultaneous measurement o... | 07/19/1994 |
| 5248616 | Method and apparatus for detection of aqueous nitric oxide from biological samples A method and apparatus are set forth for enhancing the concentration of oxides of nitrogen in the preferred embodiment. A permeable membrane is formed into a tube placed in a container. A sample containing bound nitrogen in placed in a container in contac... | 09/28/1993 |
| 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 |
| 5152963 | Total sulfur analyzer system operative on sulfur/nitrogen mixtures A total sulfur analyzer system is set forth. The system operates with gas, liquid or solid samples including free sulfur, and sulfur and nitrogen compounds. The sample is first combusted to provide products of combustion including SO2 and NO. T... | 10/06/1992 |
| 5137830 | Post-compression method of measuring soil gas concentration and emission Measuring of soil gas flux. Particularly a method of measuring soil gas concentration and emission flux during a period of post-compression of the earth's crust. The method includes observing gravitational acceleration on the surface of the earth, as defi... | 08/11/1992 |
| 5134080 | Fluid component detection method A selected component of a fluid mixture, for example a reduced sulfur compound vapor in air, is detected by selectively adsorbing the component onto a conductive thin layer of material having a chemical affinity for such component and observing the result... | 07/28/1992 |
| 5128268 | Halogen/charge-transfer complex gas monitor An apparatus for detecting or measuring the concentration of an analyte gas in a gas sample, which apparatus comprises a donor polymer and a halogen-containing compound positioned to contact the analyte gas and capable of reacting with the analyte gas to ... | 07/07/1992 |
| 5087574 | Fluid component detection method with feedback A selected component of a fluid mixture, for example a reduced sulfur compound vapor in air, is detected by selectively adsorbing the component onto a conductive thin layer of material having a chemical affinity for such component and observing the result... | 02/11/1992 |
