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| Number | Title | Issue Date |
| 7280207 | Time-delay integration in a flow cytometry system An apparatus for detecting analytes in a sample is provided. The apparatus can include: a flow cytometry system including one or more detection zones; one or more irradiation sources disposed for irradiating the one or more detection zones with radiation; at least o... | 10/09/2007 |
| 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 |
| 6529275 | Optical detection in bio-separation device using a widened detection zone In a bio-separation system, the detection zone for optical detection of sample analytes is located at a widened zone along the separation channel. In one embodiment of the present invention, the widened detection zone is a micro-bore collar having a micro... | 03/04/2003 |
| 6507397 | Automatic color-tone test device and automatic controlling system for dye liquor An automatic color-tone test device comprises: a measurement cell 4 to which there are communication-connected dye liquor introduction tubes 16, 18 for passing through a controlling dye liquor that is a measurement object and dye liquor discharge tubes 17... | 01/14/2003 |
| 6466321 | Method of diagnosing nutritious condition of crop in plant field From the crop of a predetermined area in a plant field under exposure to natural light, a reflectivity of the light having relation to crop information such as nitrogen content rate is measured by a camera; the crop information as first crop information i... | 10/15/2002 |
| 5905271 | Inline optical sensor with vernier pathlength adjustment and photometric calibration Inline optical sensor having first and second optically transmissive windows positioned on opposite sides of a product stream. A light source is positioned outside the first window for directing light through the product stream, and the spacing between th... | 05/18/1999 |
| 5689446 | Foot contour digitizer Apparatus for determining a contour of the underside of a person's foot includes an array of gauge pins supported by a first support structure and disposed in spaced relation for independent, guided movement along their longitudinal axes. An inflatable di... | 11/18/1997 |
| 5528036 | Spectral detection of contaminants in containers To spectrally detect a contaminant in a moving container, a set of reference spectral information related to one or more containers having known contents is stored. Thereafter, radiant energy is directed at liquid near the bottom of the container so that ... | 06/18/1996 |
| 4786171 | Spectral analysis apparatus and method Apparatus and method for measuring the absorbance of fluid samples. The length of the light path through the sample is adjusted to optimize the amount of light absorbed by the sample, and the absorbance of the sample is calculated from the length of the p... | 11/22/1988 |
| 4762798 | Device and method for determining a characteristic of a fluid sample A device and method for determining characteristics of a fluid sample using optical measurements and changing the optical density range of a sample, e.g., for the second of two required measurements.... | 08/09/1988 |
| 4519710 | Colorimeter A colorimeter for continuously monitoring the concentration of an ionic species in an aqueous solution comprises a source 30 of optical radiation, a flow cell 10 including three flow chambers 11, 12 and 13 interconnected so that a sample of the solution c... | 05/28/1985 |
| 4099882 | Apparatus for optically analyzing fluids In optical analysis of fluids a method and an apparatus are described by which it is possible to continuously measure the concentration value of the fluid within a very broad range of concentration values. In one single test glass optical paths of differe... | 07/11/1978 |
| 4023909 | Null balance alphameter An alphameter provides an indication of the volume absorption coefficient d the small angle forward scattering coefficient to give an indication of underwater visibility. A laser beam is alternately pulsed through the surrounding water and a reference flu... | 05/17/1977 |
