Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7530257 | Phased micro analyzer VIII A micro fluid analyzer that may be highly sensitive, fast and very compact. The analyzer may use sufficiently low power per analysis to be easily implemented with an equivalently small battery pack or other portable power source. There may be energy conservation fea... | 05/12/2009 |
| 7367216 | Phased micro analyzer V, VI A micro fluid analyzer having a concentrator and two or more separators. The analyzer may have one, two or more pumps. The analyzer may have a hyper pre-concentrator having a number of channels. There are numerous detectors positioned along the flow path of the anal... | 05/06/2008 |
| 7361208 | Chromatography oven with heat exchange and method of use Methods and systems for cooling gas chromatography ovens that comprise a housing having a fluid entry and a sleeve positioned within the housing to provide a fluid gap between the inner surface of the housing and the outer surface of the sleeve, where the sleeve is ... | 04/22/2008 |
| 7283921 | Modeling module A modeling module is disclosed that couples to a modular platform chassis. The modeling module includes a resident management controller to implement a test to model a component layout for a module to be received and coupled to the modular platform chassis. The test... | 10/16/2007 |
| 7269991 | Permeation calibrator An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to e... | 09/18/2007 |
| 7225085 | Precision gas flow meter A precision gas flow meter that is capable of measuring small flow rates of gasses precisely in the range of 0.01 to 10 L per minute. The meter is designed to measure the gas flow in small volume increments of predetermined value, and therefore can be used to measur... | 05/29/2007 |
| 7172730 | Thermal sensor A thermal sensor has a substrate defining a reaction chamber. The reaction chamber has an inlet for conducting sample into the reaction chamber, a reaction surface and an orifice adjacent the reaction surface defining an outlet from the reaction chamber. The reactio... | 02/06/2007 |
| 7155915 | Temperature controller for a semiconductor-fabricating tool A temperature controller for a semiconductor-fabricating tool includes a Peltier element disposed on an outer wall of the semiconductor-fabricating tool, and a battery for providing a current to the Peltier element. The Peltier element a heat-emitting plate for emit... | 01/02/2007 |
| 7125440 | Composite structure for high efficiency hydrogen separation and its associated methods of manufacture and use A hydrogen purification system and method that utilizes a hydrogen separator with a novel composite structure. The hydrogen separator has a first porous layer of a hydrogen permeable material, such as a palladium alloy. A solid layer of the same hydrogen permeable m... | 10/24/2006 |
| 7108813 | Gas/ion species selective membrane supported by multi-stage nano-hole array metal structure An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removi... | 09/19/2006 |
| 7104112 | Phased micro analyzer IV A fluid analyzer having a concentrator and separator for concentrating and separating fluid samples at pressures up to about 10,000 psi (˜700 bar). The concentrator and separator may consist of a solid-state thin-film heater-adsorber and a channel supported by a so... | 09/12/2006 |
| 7063784 | Processing of chemicals in flow-through device with porous media A method of processing a sample comprising introducing a sample into a flow-through device containing a porous solid media therein, and thereafter subjecting the device to microwave energy. ... | 06/20/2006 |
| 7000452 | Phased micro fluid analyzer A micro fluid analyzer having a concentrator and separator. A strip continuous through a channel in the concentrator may provide a hot zone that may move with the flow of fluid through the channel of the concentrator to provide a concentration of heat in the flow. A... | 02/21/2006 |
| 6920777 | Intake cross-sheets for gas chromatographic oven An apparatus, system and method reduce the cool down time of GC ovens by supplying larger volumes of air through oven intake ducts. The system and method provide intake cross-sheets in an oven intake duct to reduce airflow spin, increasing the flow rate of fresh air... | 07/26/2005 |
| 6849238 | Measuring sensor for gases The measuring sensor, particularly a lambda probe, has a ceramic sensor member retained at a high temperature during measuring operation. It is shielded from water droplets, carried along in the gas to be analyzed, by a heated protective housing, permeable for the g... | 02/01/2005 |
| 6843100 | Thermal conductivity measurement of carbon dioxide gas with relative humidity and temperature compensation A carbon dioxide gas measurement and control system and method which comprises a thermal conductivity absolute humidity sensor which measures carbon dioxide during dynamic temperature and humidity changes by isolating the particular sensor response for absolute humi... | 01/18/2005 |
| 6819252 | Carbon monoxide and smoke detection apparatus A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output signal indicative of the presence of smoke. This signal is coupled t... | 11/16/2004 |
| 6776025 | Carrier gas pre-heat system for gas chromatograph The invention is a gas chromatograph that includes a mechanism to heat the carrier gas to a temperature higher than that of the columns through which it flows. The carrier gas may be temperature programmed to achieve much the same results as the known technique of t... | 08/17/2004 |
| 6725704 | Gas analyzer A gas analyzer has a measuring chamber, a gas inlet channel, a gas outlet channel, a pump for providing a gas flow through the chamber, a device for irradiating the gas in the chamber with pulsating electromagnetic energy to generate acoustic pressure fluctuations t... | 04/27/2004 |
| 6535830 | Scaled quadrature pulse signal generator A scaled quadrature pulse output signal is generated for representing direction and volume in predetermined increments of the flow of a liquid or a gas through a meter. An unscaled pulse signal is received from a meter. A scaling factor is applied to each... | 03/18/2003 |
| 6530260 | Gas chromatography analysis system A gas chromatography system includes a gas chromatography oven having a door adapted for integration with gas chromatography modules which are located outside of the oven cavity. For these purposes, the oven door has module receiving openings in which the... | 03/11/2003 |
| 6472240 | Methods of semiconductor processing The present invention includes electronic device workpieces, methods of semiconductor processing and methods of sensing temperature of an electronic device workpiece. In one aspect, the invention provides an electronic device workpiece including: a substr... | 10/29/2002 |
| 6455000 | Method and apparatus for measuring the concentration of a gas A method and apparatus using thermomechanical means for signalling the concentration of a reactive gas is disclosed. The thermomechanical means uses movement of a mechanical member to produce a signal corresponding to the concentration of the reactive gas... | 09/24/2002 |
| 6426703 | Carbon monoxide and smoke detection apparatus A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output signal indicative of the presence of smoke. This signal i... | 07/30/2002 |
| 6386014 | Energy measurement device for flowing gas using microminiature gas chromatograph A system for determining the energy and volume delivered by a flowing natural gas carried within a pipeline based on BTU content analysis of the natural gas using a micro-miniature gas chromatograph. By monitoring key parameters of the flowing natural gas... | 05/14/2002 |
| 6153438 | Retention factor database A method for identifying analytes of interest by referencing to a retention factor database corresponding to a plurality of identified analytes that is independent of column dimensions and carrier gas type while dependent upon stationary phase type ratio ... | 11/28/2000 |
| 5983710 | Modular chromatography column heating system A modular chromatography column heating and temperature control system includes a heater base module with a compartment for the chromatography column that includes a heater plate. A set of heater blocks is provided in pairs, each heater block having oppos... | 11/16/1999 |
| 5979221 | Method for separating selected materials in a gas chromatograph and gas chromatograph for carrying out the method A method and apparatus for separating selected materials in a gas chromatograph. The gas mixture is introduced into a separation column of the gas chromatograph and the separation column is heated inside a chamber of the gas chromatograph to a preset temp... | 11/09/1999 |
| 5807426 | Gas chromatography apparatus with temperature controlled chamber The present invention enables the dissipation of thermal energy from a gas chromatography chamber containing a gas chromatography sample by providing the housing in two parts so that ambient air can be bled in during a creation of thermal energy with a he... | 09/15/1998 |
| 5782964 | Gas chromatography column assembly temperature control system A temperature control system (10) is provided for controlling temperature parameters in a gas chromatography column assembly (18). The temperature control system (10) includes an extended length capillary gas chromatography column member (12) which contai... | 07/21/1998 |
| 5744696 | Thermal isolation system in a chromatograph Sample analysis in a portable analytical instrument, preferably in the form of a gas chromatograph, benefits from temperature control of one or more thermal zones in the instrument by way of a thermal isolation system that includes a novel pumping assembl... | 04/28/1998 |
| 5734092 | Planar palladium structure A planar palladium structure makes use of the unique properties of palladium to provide a hydrogen permeable membrane suitable for use in providing, for example, selective control of a nominal gas pressure within a cavity. The contemplated planar palladiu... | 03/31/1998 |
| 5711786 | Gas chromatographic system with controlled sample transfer In a gas chromatographic system that includes a column and an injector with a chamber, a carrier gas normally flows into the chamber at a constant rate, and a constant primary pressure is maintained at the column inlet. A sampling receptacle selectively c... | 01/27/1998 |
| 5672810 | Gas chromatograph apparatus for a liquid sample containing a solvent A gas chromatograph for analyzing a selected target component in a liquid sample, which also contains a solvent, has a sample injection port, a temperature control unit, a split ratio control unit and a vaporization control unit. The sample injection port... | 09/30/1997 |
| 5596975 | Method of pulse width modulating an oxygen sensor A method for pulse width modulating a resistance element of an oxygen sensor. The method quickly heats the resistance element of the oxygen sensor soon after start of the engine with a relatively high duty cycle yielding wide pulse widths. During a mid ox... | 01/28/1997 |
| 5545252 | Flow regulation in gas chromatograph A gas chromatographic system includes a column and an injector for delivering into the column a test portion of flow. The injector has an exit passage for discharging a split portion of carrier flow. A flow controller for regulating the inlet flow rate in... | 08/13/1996 |
| 5524084 | Method and apparatus for improved flow and pressure measurement and control In the preferred embodiment, the invention is embodied in the pneumatic manifold of a gas chromatograph to provide current operating temperature and pressure compensation of inlet fluid flow. The pneumatic manifold comprises a plurality of thermally coupl... | 06/04/1996 |
| 5300758 | Vapor detection with high speed gas chromatography Disclosed are a method and apparatus for high speed, selective detection of vapors of specific compounds, particularly nitrogen-containing compounds, utilizing a bypass branch and high speed gas chromatography for improved selectivity and sensitivity of d... | 04/05/1994 |
| 5173922 | Temperature flow measuring sensor holder A sensor holder for holding a temperature sensor is disclosed, which comprises a first part having a first passage formed therethrough and a second part having a second passage formed therethrough. The first and second parts are so united as to coaxially ... | 12/22/1992 |
| 5158365 | Measuring probe A measuring probe for taking gas samples and/or making temperature measurements in furnace charges that are hot and/or have gas flowing through them, for example in blast furnaces, comprises a measuring head axially movable in a water-cooled sampling tube... | 10/27/1992 |
