| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 422086000 | Including means reacting gas with color indicator | 16 |
| 20090185956 | pH SENSITIVE INDICATOR DEVICE - A pH sensitive indicator device comprises a body including at least a portion of a translucent or transparent gas permeable material and an acid base colour change or halochromic material in or associated with the gas permeable material. The halochromic material can be received in a recess within the body of a gas permeable material or incorporated into the body of a gas permeable material. The gas permeable material can comprise a silicone elastomer. | 07-23-2009 |
| 20100135858 | Ink Composition and Oxygen Indicator - An ink composition comprising a redox compound as dye, a volatile agent as reducing agent, a polymer material as binder and a volatile solvent, wherein said ink composition has a viscosity of 3 to 150 mPas when said ink composition is used for printing. | 06-03-2010 |
| 20100183480 | OZONE DETECTING DEVICE - An aqueous solution is formed by dissolving a dye made of alizarin and a humectant made of glycerin, and alkalized by dissolving a base (alkaline substance), thereby preparing a detector solution ( | 07-22-2010 |
| 20100239465 | Fluorescence Sensor for Detecting Gas Compositions - A fluorescent sensor for the detection of gas compositions has a carrier substrate and a fluorescent layer. The carrier substrate and fluorescent layer consists of a gas-permeable polymer matrix with an embedded fluorescent dye. A diffusion layer of gas-permeable ceramics and/or polymers is arranged over the fluorescent layer and is adapted to cause a time delay of the gas diffusion from a detected-environment to the fluorescent layer and from the fluorescent layer to a detected-environment. | 09-23-2010 |
| 20100310425 | Real-time indicator detector - The present invention pertains generally to a detection means for indicia provided by a primary device, and more particularly, to a detection sensor assembly adapted to measure at least one indicator moiety influenced by changing gaseous environments. A detection sensor assembly performs to collect and respond to changing gaseous environments in real-time, conveying that information to a user of the detection sensor assembly sufficiently quickly and accurately such that the user can respond to the changing gaseous environments in a timely manner. The detection sensor assembly operates using an incident receiver in the form of an indicator sensor. An indicator moiety responsive to particular elements or compounds of interest in a gaseous environment is positioned proximal to the indicator sensor such that changes in the indicator moiety are captured by operation of the indicator sensor. | 12-09-2010 |
| 20110217208 | MEASURING FLOW PROPERTIES OF MULTIPLE GAS NOZZLES OF A GAS DISTRIBUTOR - A gas nozzle measurement apparatus comprises a controllable gas source to provide across a gas plate having gas nozzles, a flow of gas at a constant pressure or constant flow rate, and a sensor plate sized to cover an area comprising at least a portion of the front face of the gas plate. The sensor plate comprises gas flow sensors arranged in locations that correspond to positions of individual gas nozzles of the gas nozzles of the gas plate such that each gas flow sensor can measure a pressure, flow rate, density, or velocity of a gas stream passing through the individual gas nozzle that faces the gas flow sensor, and generate a signal indicative of, or display, the pressure, flow rate, density, or velocity of the gas stream passing through the individual gas nozzle. | 09-08-2011 |
| 20110318230 | Chemical Sensor with an Indicator Dye - A chemical sensor based on an indicator dye wherein a light transmissive element containing the indicator dye is made of a hygroscopic polymer. The polymer may be, for example, a polyimide or PMMA or other polymer. In an alternative embodiment the light transmissive element is doped with metal nanocolloidal particles. One embodiment may include a reference photodiode and differential amplifier to compensate for the fluctuations of the intensity of the light source. The light source may be pulse modulated. The sensor may include calibration means comprising a reference sample of the chemical to be detected and a precision delivery means. A method of fabricating the polymer and metal nanocolloid is disclosed wherein the nanocolloid is produced by generating a pulsed laser plasma in a suspension of metal particles and an organic solvent and adding the resulting solvent colloid to a solution containing the polymer. | 12-29-2011 |
| 20120063956 | System for Visual and Electronic Reading of Colorimetric Tubes - Gas detector tubes may be used to determine a concentration of target gases in air. The gas detector tubes described may be read either by and optical reader or visually by the user. A gas detector tube reader having an optical reader capable of reading a length of stain, a color change and color density of a reagent in a gas detector tube. The gas detector tube may further comprise sensors for measuring the environmental conditions during sampling. | 03-15-2012 |
| 20120148452 | NON INVASIVE GAS ANALYSIS - A sensing device is provided. The device comprises a gas permeable member, a sensing member and optical means. | 06-14-2012 |
| 20130004372 | Chemochromic Detector for Sensing Gas Leakage and Process for Producing the Same - A chemochromic sensor for detecting a combustible gas, such as hydrogen, includes a chemochromic pigment and a textile polymer. The textile material includes a chemochromic pigment operably responsive to a combustible gas. The combustible gas sensing textile material can be made by melt spinning, solution spinning, or other similar techniques. In a preferred embodiment carbon nanotubes are used with the textile material which will increase the material strength and alter the thermal and/or electrical properties. These textiles woven into fabrics can provide garments not only with hydrogen sensing capabilities but the carbon nanotubes will allow for a range of sensing capabilities to be embedded (i.e. gas, health, and electronic monitors) within the garments. | 01-03-2013 |
| 20130071290 | CARBON MONOXIDE SENSOR SYSTEM AND RELATED METHODS - A miniature lower cost optical sensing apparatus and method are provided for determining the concentration and/or hazard from a target gas by means of IR or visible photon monitoring one or more sensors that responds to carbon monoxide. The apparatus comprises a photon source optically coupled to the sensor and at least a portion of the photon intensity passing through the sensor is quantified by one or more photodiode(s) in a system, so that the photon flux is a function of at least one sensor's response to the target gas, e.g., transmits light through the sensor to the photodiode. The photo current from the photodiode is converted to a sensor reading value proportional to the optical characteristics of the sensors and is loaded into a microprocessor or other logic circuit. In the microprocessor, the sensor readings may be differentiated to determine the rate of change of the sensor readings and the total photons absorbed value may be used to calculate the CO concentration and/or dose. | 03-21-2013 |
| 20130078151 | LIQUID CRYSTAL GAS SENSOR CELL AND THE USE THEREOF - A gas sensor cell using a liquid crystal composite material is provided. The gas sensor cell has recovery capability and can be reused. Upon gas adsorption, the liquid crystal composite material has visually detectable color changes and changes in electrical properties to facilitate the measurement of gas concentration from low to high. | 03-28-2013 |
| 20140004004 | LIQUID CRYSTAL GAS SENSOR CELL AND THE USE THEREOF | 01-02-2014 |
| 20150323468 | APPARATUS FOR MEASURING PARTIAL PRESSURE OF CARBON DIOXIDE AND CELL UNIT FOR THE APPARATUS - An apparatus for accurately measuring carbon dioxide partial pressure even if the apparatus is disposed in an environment at a high ambient water pressure, such as in a deep sea environment. A through hole that penetrates a body portion is formed in the body portion. The body portion is connected to a light source unit and a light receiving element unit. A signal line is disposed to pass through the through hole formed in the body portion. The signal line electrically connects between an amplifier substrate of the light receiving element unit and a CPU substrate of the light source unit to transfer the detection result amplified by the amplifier substrate. | 11-12-2015 |
| 422087000 | Strip indicator | 2 |
| 20080267825 | Gas detecting apparatus - A gas detecting apparatus includes a plate including a first reactive surface and a second reactive surface each coated with a chemical reagent which is capable of causing a color reaction with a particular gas, a protective member covering the first reactive surface, a transparent protective member covering the second reactive surface, a protective package enclosing therein the plate with the first reactive surface covered with the protective member and the second reactive surface covered with the transparent protective member, and a connector connecting the protective member and the protective package to each other. | 10-30-2008 |
| 20160091477 | DUAL SENSOR ANALYZER - Systems, methods, and devices for testing gaseous samples for concentrations of specific chemicals. An apparatus has two sensing assemblies for testing for hydrogen sulfide concentrations in gaseous samples. A first assembly is disposed to expose a first side of a sensing tape to a first stream of a gaseous sample. A second assembly is disposed to expose a second side of the same sensing tape to a second stream of another gaseous sample. Both assemblies detect and analyze the hydrogen sulfide concentrations of their respective gaseous samples by way of their respective sides of the sensing tape. | 03-31-2016 |
