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| Number | Title | Issue Date |
| 7768645 | Miniature optical readhead and colorimeter for analysis media A miniature readhead is provided for photometric color detection using ambient light. The readhead is hand-held, including a superposed plate and tray. The tray receives sample media configured to react and to change color according to an amount of analyte in a samp... | 08/03/2010 |
| 7601544 | Method and apparatus for using infrared readings to detect misidentification of a diagnostic test strip in a reflectance spectrometer A method and apparatus for using an infrared reading to detect the misidentification of a diagnostic test strip disposed on a feed table comprising the steps of determining if the test strip possesses specified reagents, reading the infrared reflectances from the re... | 10/13/2009 |
| 7264971 | Read-head for optical diagnostic device A readhead for a photometric diagnostic instrument includes a housing adapted for incorporation within the photometric diagnostic instrument, and an elongated sample table operatively engaged with the housing. The sample table is configured to support elongated reag... | 09/04/2007 |
| 6839472 | Solid state optical interconnect system A solid state optical interconnect system selectively interconnects a plurality of electromagnetic signals between a plurality of inputs and a plurality of outputs. The system includes a plurality of solid state, selectively actuatable 2×2 optical switching element... | 01/04/2005 |
| 6525859 | Optical shutter The present invention pertains to an optical shutter comprising an organic free compound, such as a radical cation or a radical anion, and a polydiacetylene compound, wherein the polydiacetylene compound is characterized by having a change in absorption i... | 02/25/2003 |
| 6439765 | Mass and heat flow measurement sensor Provided are mass and heat flow measurement sensors comprising a microresonator, such as a quartz crystal microbalance; a heat flow sensor; and a heat sink coupled thermally to the heat flow sensor. The sensors may be used to measure changes in mass due t... | 08/27/2002 |
| 6155282 | Two out of three voting solenoid arrangement A binary voting solenoid arrangement 10 is provided which operates in a "2 out of 3" manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while also enabling on-line testing of each solenoid individually ... | 12/05/2000 |
| 6112638 | Electropneumatic positioner having binary input arrangement providing access to electrical output functions thereof The present invention includes an electropneumatic positioner having an external binary input block which provides access to the electrical output of an integral electronic position controller to control operation of a valve relay. The invention enables m... | 09/05/2000 |
