Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7952697 | Coffee refractometer method and apparatus A coffee refractometer includes a prism that receives a brewed coffee sample, thus forming a prism-sample interface. A processor or microcontroller controls a light source to provide incident light to the prism-sample interface. The prism-sample interface refracts l... | 05/31/2011 |
| 7408632 | Miscibility determination of a combination of liquids The present invention provides methods for the determination of miscibility of a mixture of two or more liquids. Measurements of the local deviation of a pattern characteristic or of the variation in light intensity are employed in such determinations. ... | 08/05/2008 |
| 7280194 | Accurate determination of refractive indices of solid, fluid and liquid materials Systems and methodology for determining not only precise and repeatable results, but accurate values of the refractive index of solids, fluids and liquids. ... | 10/09/2007 |
| 7271885 | Plasmon resonance measuring method and apparatus Detection apparatus for performing surface plasmon resonance (SPR) measurements on a sample includes a support having side walls and a bottom wall defining a plurality of adjacent wells. The bottom wall has integrated therein SPR detectors underlying the wells for d... | 09/18/2007 |
| 7182126 | Fluid heater A heat distribution apparatus comprising a fluid conduit having a peripheral wall defining a flow passage and a pair of fluid capillaries extending along the wall and secured thereto. The capillaries being connected to one another in series to provide a fluid flow p... | 02/27/2007 |
| 7064816 | Refractometer The invention relates to a portable refractometer comprising a depression (7) for samples, located on an insertion tip (11) in such a way that once the insertion tip (11) has penetrated a liquid or a fruit, a sufficient quantity of the sample li... | 06/20/2006 |
| 7016026 | Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer The invention relates to refractometry and attenuated reflectance spectrometry in a wellbore environment. Specifically, it pertains to a robust apparatus and method for measuring refractive index of fluids along a continuum (rather than in steps), and for measuring ... | 03/21/2006 |
| 6885454 | Measuring apparatus A measuring apparatus is disclosed which includes a measuring unit equipped with a dielectric block and a thin film layer; an incidence system for making a light beam enter the dielectric block so that a condition for total internal reflection is satisfied at an int... | 04/26/2005 |
| 6813014 | Method for designing and tuning and system for measuring a refractive index of a magnetic fluid A method for designing and tuning a refractive index of a magnetic fluid is performed by adjusting some characteristic parameters. The characteristic parameters include the type of carrier, the type of magnetic particles, the concentration of the magnetic ingredient... | 11/02/2004 |
| 6687004 | Optical sensor for opaque and non-opaque materials A sensor is capable of detecting clear or opaque materials. The sensor can be disposed around a clear tube which carries a material such as liquid. The sensor utilizes a thin beam light source and a wide area photo detector. A window comparator determines... | 02/03/2004 |
| 6549276 | Method and apparatus for optical measurement of concentration and temperature of liquids Disclosed are a method and an apparatus for precision optical measurement of solute concentration and temperature of a transparent liquid. The apparatus includes a vessel (12) which contains a sample of liquid (14), the refractive index of which is to be ... | 04/15/2003 |
| 6509959 | Potting compound for fabrication of fiber optic gyro sensor coil and method for fabricating sensor coil A potting compound for use in the fabrication of fiber optic gyro sensor coils utilizes a silver-filled silicone base to reduce gyro sensitivity to changes in heat rate and thereby improve gyro performance during warm-up and periods of thermal cycling.... | 01/21/2003 |
| 6486944 | Fluid-sealed refractometer having data transmission means A hand-held automatic refractometer comprises a completely fluid-sealed housing enclosing a wireless transmitter for transmitting digital measurement data to a remote computer having a corresponding receiver connected thereto. The refractometer housing pr... | 11/26/2002 |
| 6396576 | Method for determining shadowline location on a photosensitive array and critical angle refractometer employing the method A method for determining a cell crossing number of a shadowline between illuminated and dark regions of a linear scanned array of photosensitive cells, and an automatic refractometer using the method, are disclosed. The array is scanned to extract a respo... | 05/28/2002 |
| 6381025 | Interferometric detection system and method An optical detection scheme for on-chip, high sensitivity refractive index detection is based on micro-interferometry, and allows for picoliter detection volumes and universal analyte sensitivity. The invention employs three main elements: a source of coh... | 04/30/2002 |
| 5715046 | Process and device for oil stability measurement A method and a device for determination of the stability or storability of oil, wherein the stability of oil is determined by measuring the intensity of light scattering from the oil surface, when an asphalteneflocculating liquid is added to the oil sampl... | 02/03/1998 |
| 5157454 | Differential refractometer A differential refractometer in which: light from a light source is condensed on a lens; the light thus condensed is guided to a cell which houses a sample of which refractive index is to be measured and a reference of which refractive index is used as a ... | 10/20/1992 |
| 5110208 | Measurement of average density and relative volumes in a dispersed two-phase fluid An apparatus and a method are disclosed for measuring the average density and relative volumes in an essentially transparent, dispersed two-phase fluid. A laser beam with a diameter no greater than 1% of the diameter of the bubbles, droplets, or particles... | 05/05/1992 |
| 5074659 | Device for detecting alcoholic content The present invention is directed to a device for detecting alcoholic content in a fuel by finding its refractive index, which is of such a construction that a refractive interface for the fuel is formed on the half way of a light transmission body; a lig... | 12/24/1991 |
| 4756618 | Refractive index measurement cell A refractive index measurement cell for liquid samples and method for measuring refractive indices of liquids are described which comprise a transparent tubular member closed at one end defining a sample volume of semicylindrical shape with respect to an ... | 07/12/1988 |
| 4710643 | Method and apparatus for determining the degree of purity of a liquid Method and apparatus for monitoring the purity of a liquid in a container by passing a laser beam divided into two portions with the first portion passing through a pair of quartz windows with the liquid in a container therebetween, and the second portion... | 12/01/1987 |
| 4689304 | Air/liquid detection device for blood sample analysis An air/fluid sensing device useful in apparatus for analyzing biological material. The device includes one or more light sources directed at a surface of a container defining an interface with the space enclosed thereby. Depending on whether fluid is pres... | 08/25/1987 |
| 4381895 | Method and apparatus for automatic flow-through digital refractometer Method and apparatus for determining the concentration of dissolved solids in a sample solution. A refractometer has an enclosing opaque housing, a light source directing a substantially collimated monochromatic light beam through, and a hollow transparen... | 05/03/1983 |
| 4286873 | Refractometer cell with integral lens A fused glass refractometer cell is disclosed in which a lens is formed by the front surface of the cell and a reflective surface is applied to the rear surface of the cell. Means are provided to limit the passage of light through the cell to the central ... | 09/01/1981 |
| 4284352 | Heat exchanger for refractometer Apparatus for measuring changes in a physical property of a flowing fluid, including a cell through which the fluid flows, the cell having an inlet and an outlet, an inlet tube connected to the inlet of the cell, for delivering the flowing fluid to the ce... | 08/18/1981 |
