Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 7864323 | Method for measuring the concentration of a gas component in a measuring gas There is described a method for measuring a concentration of a gas component in a measuring gas, wherein the light of a wavelength tunable light source is passed along a single optical path through a measuring volume containing the measuring gas and a reference cell... | 01/04/2011 |
| 7435391 | Light-mediated micro-chemical reactors A chemical reactor includes two substrates that are joined along a surface and a chemical reaction chamber formed between the substrates. The chemical reaction chamber has a hollow interior and one or more light reflectors located along walls of the hollow interior.... | 10/14/2008 |
| 7400407 | Meter for measuring the turbidity of fluids using reflected light A meter for measuring the turbidity of a fluid includes a light source for directing a light beam through a fluid under test towards a reflective surface and a sensor for detecting light reflected from the reflective surface and passing back through the fluid under ... | 07/15/2008 |
| 7382459 | Spectroscopic gas sensor, in particular for detecting at least one gas component in the ambient air, and method for manufacturing a spectroscopic gas sensor of this type A spectroscopic gas sensor is provided, in particular to detect at least one gas component in the ambient air, and a method for the manufacture of a spectroscopic gas sensor of this type. The gas sensor includes the following: at least one radiation detection device... | 06/03/2008 |
| 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 |
| 7352464 | Oxygen sensor for aircraft fuel inerting systems An apparatus and method for monitoring oxygen concentrations in fuel tank ullage comprising providing a sensor head comprising an optical cavity, exposing the optical cavity to an ambient gaseous environment of a fuel tank or air separation module, via a laser light... | 04/01/2008 |
| 7283243 | Semiconductor diode laser spectrometer arrangement and method A method apparatus for sensing gases using a semiconductor diode laser spectrometer, the method comprising: introducing a sample gas into a non-resonant optical cell (17); applying a step function electrical pulse (19) to a semiconductor diode laser ( | 10/16/2007 |
| 7279132 | Chemical vapor sensor having an active and a passive measurement mode A chemical vapor sensor is provided that measures a chemical species of interest with high sensitivity and chemical specificity. In an aspect, an ethanol vapor sensor is provided, sized for being inconspicuous and on-board a vehicle, having a passive measurement mod... | 10/09/2007 |
| 7262856 | Microstructured optical device for remote chemical sensing A microstructure-based chemical sensor that can be interrogated by a remote observer. The device acts as an electromagnetic wave filter in the optical region of the spectrum, filtering one or more wavelength bands where the band spectral notch location shifts in res... | 08/28/2007 |
| 7227642 | Absorbance monitor This invention relates to a multi-component absorbance monitor, and the object is to provide a general-purpose and highly accurate compact absorbance monitor. Disclosed is an absorbance monitor including a light source, a sample cell and a plurality of detectors as ... | 06/05/2007 |
| 7112447 | Hand held gas analyzer A lightweight and portable analyzer is provided. At least one component of the analyzer is made from a lightweight material, such as ABS. A manifold can have a plate and gas passages ultrasonically welded together. By having at least one component made from a lightw... | 09/26/2006 |
| 7109874 | Smoke detectors A smoke detector unit (20) comprising a housing containing a smoke detector (24) and at least two component mounting boards, such as printed circuit boards, in a stacked arrangement, the housing having at least one air gap (34), wherein one of t... | 09/19/2006 |
| 7095501 | Ethyl alcohol sensor and method of use An ethanol sensing unit and a method of using, wherein the unit is particularly suitable for use in a confined environment such as the passenger compartment of a passenger vehicle. The sensing unit comprises a device for collecting ethanol vapors while the device is... | 08/22/2006 |
| 7057175 | Infrared absorption measurement method, infrared absorption measurement device, and method of manufacturing semiconductor device An infrared absorption measurement method includes: (a) measuring infrared absorption of a measurement target component in a state in which a sample gas including the measurement target component is decompressed; (b) calculating an absorption area in a peak region o... | 06/06/2006 |
| 7016039 | Purging light beam paths in optical equipment Purging of a light beam path in an effective manner that minimizes the affect of the purging requirement on system throughput. In one embodiment, the invention is incorporated into a birefringence measurement system that has several components for directing light th... | 03/21/2006 |
| 6989549 | Optical gas sensor A robust gas sensor can be manufactured in a simple manner and at low cost, and have no movable optical components. A measured gas cell (3) has a wall defining a cylindrical space with a measured gas inlet. The measured gas cell (3) is limited in the l... | 01/24/2006 |
| 6976883 | Adaptor apparatus and method for interchanging smoke alarms An adapter configured for use between an alarm device and a wire harness. The adapter includes a housing having first and second sides, a circuit board positioned at least partially within the housing, and a first connection configuration associated with the first h... | 12/20/2005 |
| 6943886 | Method for enhanced gas monitoring in high particle density flow streams A method for conducting laser absorption measurements in high temperature process streams having high levels of particulate matter is disclosed. An impinger is positioned substantially parallel to a laser beam propagation path and at upstream position relative to th... | 09/13/2005 |
| 6885453 | Gas permeable probe for use in an optical analyzer for an exhaust gas stream flowing through a duct or chimney A gas permeable probe for use in an optical analyzer for an exhaust gas stream flowing through a duct or chimney has: an elongate hollow structure having first and second ends and a side wall, with an optical cavity defined between... | 04/26/2005 |
| 6809825 | Gas permeable probe for use in an optical analyzer for an exhaust gas stream flowing through a duct or chimney A gas permeable probe for use in an optical analyzer for an exhaust gas stream flowing through a duct or chimney has: an elongate hollow structure having first and second ends and a side wall, with an optical cavity defined between... | 10/26/2004 |
| 6756906 | Self-diagnostic smoke detector A self-contained smoke detector system has internal self-diagnostic capabilities and accepts a replacement smoke intake canopy (14) without a need for recalibration. The system includes a microprocessor-based self-diagnostic circuit (200) that periodic... | 06/29/2004 |
| 6755074 | Liquid chromatographic method and system To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by one motor to draw and pump solvent simultaneously into corresponding ... | 06/29/2004 |
| 6753967 | Gas sensor A gas sensor of the type that detects the presence of a specific gas by monitoring the absorption of optical radiation transmitted through a chamber containing a sample of gas under test comprises an optical source for emmiting radiation therefrom and a detector sen... | 06/22/2004 |
| 6507013 | Optical reference element and procedure for the spectral calibration of an optical spectrum analyzer An optical reference signal with a gas sealed in a space, an optical fiber and a lens collecting the light beam exiting the optical fiber before the front end of the space and a photodetector at the back end of the space, which can be connected with an ev... | 01/14/2003 |
| 6377348 | Smoke chamber for evaluating foundry sand shapes and its method of use A smoke chamber for determining the amount of visible smoke emitted by a foundry core/mold resin system is composed of an elongate chamber having a proximal end, a distal end, and sides. The chamber is fitted with air inlet at its proximal end, a smoke ou... | 04/23/2002 |
| 6351999 | Vortex flow sensor This sensor for measuring the flow velocity and/or the flow rate of a fluid provides an optical sensor system which is also suitable for use at temperatures higher than 400° C., does not come into contact with the fluid, and requires less space than conv... | 03/05/2002 |
| 6108072 | Protection for optical sensors in industrial applications This invention describes method and apparatus for protecting optical sensors in harsh industrial environments, particularly welding and machining. In a preferred embodiment, a sacrificial window is utilized which is replaced as needed. Numerous design fea... | 08/22/2000 |
| 6067167 | ILS sensors for drug detection within vehicles On-board ILS sensors for detecting illegal drugs and based on intracavity laser spectroscopy (ILS) are provided for detecting the presence of drugs and their metabolized by-product vapors in an enclosed space, such as a vehicle. The sensor comprises: (a) ... | 05/23/2000 |
| 6050656 | Optical based opacity and flow monitoring system and method of monitoring opacity and flow A pollutant emissions monitoring system and a method of measuring pollutant emissions, particularly fly ash, of gas passing through stacks of coal-fired boilers. An all optical-based emission monitor has an opacity monitor and a flow rate monitor connecte... | 04/18/2000 |
| 5993743 | Hand-held vehicle exhaust analyzer A vehicle gas analyzing system for testing gas content in exhaust emitted from a vehicle is disclosed. The vehicle gas analyzing system is of a size and weight to be held in a user's hands. The system includes a housing having outer dimensions no greater ... | 11/30/1999 |
| 5943136 | Intra-cavity total reflection for high sensitivity measurement of optical properties An optical cavity resonator device is provided for conducting sensitive murement of optical absorption by matter in any state with diffraction-limited spatial resolution through utilization of total internal reflection within a high-Q (high quality, low ... | 08/24/1999 |
| 5907407 | ILS sensors for alcohol detection within vehicles On-board ILS ethyl alcohol sensors based on intracavity laser spectroscopy (ILS) are provided for detecting the presence of ethyl alcohol vapors in a vehicle. The sensor comprises: (a) a laser comprising a gain medium having two opposed facets within a la... | 05/25/1999 |
| 5854685 | Holographic gas analyzer utilizing holographic optics The present invention relates to an analyzer for determining the concentration of substances, such as chemicals, present in a fluid medium, such as gas, vapor or liquid, using holographic optics. The analyzer of the present invention is based on the infra... | 12/29/1998 |
| 5852398 | Apparatus for indicating failure of an air filtration system in a diesel engine An apparatus is disclosed for continuously sampling, at a point downstream of the air cleaner, the normally clean air entering an air induction system of a diesel engine to produce a signal indicating a leakage malfunction condition in the air induction s... | 12/22/1998 |
| 5844668 | Protection window for optical sensors in industrial applications This invention describes a method and apparatus for protecting optical sensors in harsh industrial environments, particularly welding and machining. In a preferred embodiment, a sacrificial window is utilized which is replaced as needed. Numerous design f... | 12/01/1998 |
| 5835230 | Method for calibration of a spectroscopic sensor A novel method for calibration of a spectroscopic sensor is provided. In the method, a spectroscopic system is provided. The system includes a measurement cell having one or more walls which at least partially enclose a sample region. The cell further inc... | 11/10/1998 |
| 5831730 | Method for monitoring particulates using beam-steered solid-state light source An improved method of monitoring particulates in stacks or ducts utilizes transmissometer/particulate monitor of the type which has an optical assembly containing a solid state light source of visible light such as a light-emitting diode or a solid-state ... | 11/03/1998 |
| 5751424 | Scalable non-contact optical backscatter insertion probe A non-contact optical backscatter insertion probe includes an outer chamber, an electromagnetic energy source positioned within the outer chamber for emitting photons towards a medium to be analyzed, and an inner chamber positioned within the outer chambe... | 05/12/1998 |
| 5742054 | Ultra-sensitive detection of contaminants in corrosive gas via intracavity laser spectroscopy (ILS) Contaminants in corrosive gases are detected optically at concentrations below 1 part-per-million (ppm) and extending to a level below 1 part-per-billion (ppb) by using intracavity laser spectroscopy (ILS) techniques. A laser, the ILS laser, is employed a... | 04/21/1998 |
| 5696592 | Immersible apparatus for measuring light penetrability of liquids An apparatus for measuring light penetrability of liquids, including: a water-tight, heat, compression and chemical resistant casing, a light source mounted inside the casing and controlled to alternately, emit light of different wavelengths, a controller... | 12/09/1997 |
