Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7460232 | On-line optical analysis of a substance through a conduit section of a process line A conduit-mounted light-transmitting device (10) for allowing optical analysis of a substance through a process line conduit (14) made of a light-transmitting material. The device (10) comprises a clip (24) adapted to be detachably secure... | 12/02/2008 |
| 7423751 | Systems and methods for use in detecting harmful aerosol particles The invention provides systems and methods for detecting aerosols. The systems and methods can be used to detect harmful aerosols, such as, bio-aerosols. ... | 09/09/2008 |
| 7414255 | Drop counter The present invention relates to a Drop Counter for counting a succession of falling liquid drops. The Drop Counter includes a light emitting diode for providing a light beam directed to a falling liquid drop. A photo diode sensor is positioned in side-by-side relat... | 08/19/2008 |
| 7367942 | Method and apparatus for testing blood glucose in a reversible infusion line An apparatus for automatically and periodically measuring a patient's blood glucose level wherein the patient has a catheter in a blood vessel and is receiving infusion fluid through the catheter. A testing unit is provided which has a main infusion channel and, in ... | 05/06/2008 |
| 7358476 | Sensing photons from objects in channels A fluidic structure includes a channel and along the channel is a series of sensing components to obtain information about objects traveling within the channel, such as droplets or other objects carried by fluid. At least one sensing component includes a set of cell... | 04/15/2008 |
| 7339674 | Apparatus and method for changing the color of a flow of fluid A color adjustment system for changing the color of fluid flowing from a source. The color adjustment system includes a main mixing pipe connected to storage vessels to continuously receive flows of colorants from the storage vessels. A fluid inspection cell is conn... | 03/04/2008 |
| 7301158 | Method and apparatus for measuring active fluorescence Some embodiments of the invention provide an apparatus for measuring active fluorescence in liquid samples by using solid-state components. The use of solid-state devices dramatically lowers the cost, size, and power consumption of active fluorescence while improvin... | 11/27/2007 |
| 7291824 | Photosensing throughout energy range and in subranges An integrated circuit (IC) includes a photosensor array, some cells of which are reference cells that photosense throughout an application's energy range, while other cells of which are subrange cells that photosense within respective subranges. For example, the sub... | 11/06/2007 |
| 7274455 | Optical detection apparatus for multi-channel multi-color measurement and multi-channel sample analyzer employing the same Provided are an optical detection apparatus which can measure multi-channel samples at high speed and various wavelengths using an optical detector and a multi-channel sample analyzer employing the same. The optical detection apparatus includes an optical detector; ... | 09/25/2007 |
| 7251032 | Optical monitoring system with molecular filters An optical monitoring system for determining the constituents of a sample or specimen. An absorption spectrum is obtained from a sample and is passed through one or more filters having a specified absorption spectrum defined by a single atom or a compound. If the fi... | 07/31/2007 |
| 7248363 | Particle size analyzer A laser diffraction particle size analyzer irradiates a laser beam on particles in a scattered state, and measures a spatial intensity distribution of diffracted and scattered light from the particles. A particle size distribution of the particles is calculated from... | 07/24/2007 |
| 7230687 | Blood leak detector for extracorporeal treatment system A blood leak detector is disclosed having a light source projecting a beam along an optical path, wherein the beam has a wavelength in a range of about 800 to 930 nm; a light detector receiving the beam through an aperture having a diameter in a range of 30 to 60 th... | 06/12/2007 |
| 7224454 | Apparatus and process for analyzing a stream of fluid An analyzing probe for insertion into numerous different environments to determine at least one characteristic of particulate matter suspended in a fluid stream of a test sample. Preferably, the analyzing probe includes a minimal amount of optical elements such as l... | 05/29/2007 |
| 7113280 | Dye detection method and apparatus Method and apparatus for detecting the presence of a color dye in a water sample are described. Light is generated and passed through a water sample. A color sensor is utilized to measure the light that passes through the water sample. Based on the measured light, i... | 09/26/2006 |
| 7087887 | Optical multiphase flow sensor Waveguide sensors having a side-polished coupling port at the waveguide cladding to sense a material based on material-specific optical attenuation by evanescent coupling at the coupling port. ... | 08/08/2006 |
| 7057730 | Apparatus and method for direct measurement of absorption and scattering coefficients in situ An apparatus for measuring an absorption coefficient includes a first diffusive material, a second diffusive material inside the first diffusive material separated from the first diffusive material by a cavity, and a transparent material proximate to an inner surfac... | 06/06/2006 |
| 7027147 | Method and apparatus for measuring the color properties of fluids An apparatus for inspection of fluids, particularly dispersions and tints, having a fluid analysis cell with a cavity enclosed by two light transmitting windows and having a spacer member fixedly positioned therebetween which provides a fluid analysis chamber of fix... | 04/11/2006 |
| 6992768 | Optical fluid analysis signal refinement A method for refining fluid sample data includes obtaining optical density data for a fluid sample in at least two color channels and at least one fluid component channel and determining a color-absorption function from the optical density data for the fluid sample ... | 01/31/2006 |
| 6867861 | Method and apparatus for characterizing the color properties of fluids An apparatus for inspection of fluids, particularly dispersions and tints, having a fluid analysis cell with a cavity therein defining a fluid analysis chamber, fluid inlet and outlets extending from the cavity in opposite directions to enable fluid flow into and ou... | 03/15/2005 |
| 6813017 | Apparatus and method employing incoherent light emitting semiconductor devices as particle detection light sources in a flow cytometer An apparatus and method for examining particles in a flow stream of a flow cytometer, employing incoherent light sources, such as light emitting diodes (LEDs), and detectors. The light emitting diodes operate as the excitation light sources and emit light toward sai... | 11/02/2004 |
| 6678052 | On-line system for measuring properties of a product An on-line sensor is provided that supplies light to a spectrophotometer to measure the color a product extruded through a conduit having a bypass section. The on-line sensor includes a transparent member with an opaque outer surface and an interior porti... | 01/13/2004 |
| 6657718 | Measuring cell for liquids A liquid measuring cell for measuring optical properties of liquids, with a measuring chamber (16), which is adjoined on one side by a transparent window (11), and with a reflector (30) disposed on the opposite side of the measuring chamber (16), which re... | 12/02/2003 |
| 6636304 | Laser induced fluorescence capillary interface An optical scheme that substantially eliminates spherical aberration and coma, thereby substantially improving fluorescence excitation and collection efficiency. The optical scheme utilizes a laser beam focused by an optical component through the curved s... | 10/21/2003 |
| 6628394 | Optical gasket system An optical gasket system for use in a colorimeter or other instrument which utilizes a light beam and a sample cell or chamber for a liquid to be tested. Each gasket is optically clear and is pliable so as to conform to the surface of the sample cell whic... | 09/30/2003 |
| 6508109 | Method and device for measurement of pulsating milk flow A method and device for making measurements of the characteristics of a fluid, particularly the milk, which flows in pulsations in a conduit. The device has a measuring region wherein at least one characteristic of the fluid is determined. The measurement... | 01/21/2003 |
| 6288783 | Fluid analysis system and method, for analyzing characteristic properties of a fluid A fluid analysis system, for analyzing a specified physical characteristic of a fluid, and a method for the same, the system having a sampling region in communication with a fluid inlet to permit feeding of the fluid between opposed fluid contact surface ... | 09/11/2001 |
| 6239871 | Laser induced fluorescence capillary interface An optical scheme that substantially eliminates spherical aberration and coma, thereby substantially improving fluorescence excitation and collection efficiency. The optical scheme utilizes a laser beam focused by an optical component through the curved s... | 05/29/2001 |
| 6208880 | Blood parameter measurement device A blood parameter measurement device especially useful for surgical procedures includes a compact housing with a light source, light detector and signal converter contained within the housing. In use, the device is releasably coupled to a cassette that ca... | 03/27/2001 |
| 6184990 | Miniature multiple wavelength excitation and emission optical system and method for laser-induced fluorescence detectors in capillary electrophoresis An optical apparatus for and method of improving collection efficiency and signal strength of optical instruments used in capillary electrophoresis, such as laser-induced fluorescence detectors are provided. The apparatus and method provides a concave ref... | 02/06/2001 |
| 6174447 | Process and devices for fluid separation of whole blood as a mixture of liquids into individual, differently-colored blood constituents, in particular for separation of concentrated thrombocytes from buffy coat The invention relates to a method for fluid separation of whole blood as a mixture of liquids into individual, differently-colored blood constituents, which blood is packed in flexible containers, in particular bags, wherein the bags are connected to one ... | 01/16/2001 |
| 6130743 | Colorimetric red blood cell sensor A colorimetric red blood cell sensor provides an automatic system for deting and preventing the further mixing of red blood cells and plasma. The sensor includes a processor that controls blue and red light sources so that they collectively generate puls... | 10/10/2000 |
| 5949549 | Colorimeter with a beamsplitting prism A colorimeter for measuring colour of process medium comprising two light sources and two detectors both light sources being arranged to emit a beam through the process medium and the windows adjoining the process medium to both detectors. In order to ach... | 09/07/1999 |
| 5916449 | Method and arrangement for monitoring a separating liquid stream A method and an arrangement by which separating liquid streams, such as occur for example in cell sorters, are monitored automatically. An image of the separating liquid streams is recorded and the position of a separation point at which the drops separat... | 06/29/1999 |
| 5757482 | Module for optical detection in microscale fluidic analyses Disclosed is an apparatus for fluidic separation systems comprising a microfabricated conduit including a usefully long optical pathlength. The provision of a usefully long optical pathlength in the apparatus greatly improves the sensitivity of detection ... | 05/26/1998 |
| 5724882 | Brewed beverage maker with optical feedback system A brewed beverage maker, such as a coffee maker, is provided having an automatic concentration control system. An optical feedback system is employed for controlling the concentration of brewed beverages such as coffee and tea. In preferred embodiments, t... | 03/10/1998 |
| 5717494 | Method of optically measuring liquid in porous material In a method of measuring optical characteristics of a component in a liquid impregnated in a porous material with no affection by the porous material, a light beam having an absorbable wavelength which is absorbed by the component in the liquid and a ligh... | 02/10/1998 |
| 5661558 | Optical detector for flowing sample and optical detection method for flowing sample An optical detector for flowing sample comprises a light condenser for condensing a diverging monochrome light, a flow cell arranged in the course of convergence of the converged light beam, and a sample-side detector for receiving a sample-side light. Su... | 08/26/1997 |
| 5650846 | Microcolumnar analytical system with optical fiber sensor An analytical system for analyzing a fluid sample is disclosed. The analytical system includes a microcolumn for conducting the fluid sample, a light source for delivering light through the microcolumnar wall into the microcolumn near the outlet end of th... | 07/22/1997 |
| 5644402 | Device for detecting a conduit and for determining at least one characteristic of its content A device for detecting a conduit and for determining at least one characteristic of its content includes a seat for housing at least a portion of the conduit. The seat has first and second zones which are opposite each other with respect to a recess inten... | 07/01/1997 |
| 5638171 | Spectrophotometer with self-contained module A spectrophotometer which accommodates a self-contained sample module. Sample modules are interchangeable and can be readily inserted into, or removed from, the spectrophotometer without tools. Guides in the spectrophotometer assure that the modules are p... | 06/10/1997 |
