Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8184286 | Atomic absorption spectrophotometer An atomic absorption spectrophotometer that memorizes the maximum amount of light of each light source when an transmissivity of each of a plurality of dimmers is largest; computes an appropriate transmissivity of each dimmer for equalizing the amounts of light of t... | 05/22/2012 |
| 7859663 | Polychrometer and method for correcting stray lights of the same In a polychrometer and a method for correcting stray light of the polychrometer, relative spectral (inter-pixel) distribution of stray light independent of a spectral distribution of an incident light is obtained, intensity coefficient of the stray light is calculat... | 12/28/2010 |
| 7715004 | Signal noise reduction for imaging in biological analysis A system and method for characterizing contributions to signal noise associated with charge-coupled devices adapted for use in biological analysis. Dark current contribution, readout offset contribution, photo response non-uniformity, and spurious charge contributio... | 05/11/2010 |
| 7554659 | Hyperspectral visible absorption imaging of molecular probes and dyes in biomaterials A system and method for obtaining hyperspectral visible absorption images. The system includes a light source which illuminates a sample containing light absorbing material, a platform, an optical lens, a detector. The platform has a section for placement of the sam... | 06/30/2009 |
| 7471390 | Spectrometer signal quality improvement via background subtraction A spectrometer collects background spectra during the idle time in which it is not collecting spectra from a sample. These spectra are collected over a range of exposure times, allowing the background reading on each pixel to be modeled as a function of exposure tim... | 12/30/2008 |
| 7436510 | Method and apparatus for identifying a substance using a spectral library database A spectroscopic detector for identifying the presence of a first substance in the presence of another substance includes a laser for illuminating the substances at a plurality of wavelengths to induce the emission of radiation characteristic of the substance; a spec... | 10/14/2008 |
| 7408729 | Enhanced data storage and retrieval devices and systems and methods for utilizing same The present invention relates generally to the storage and/or retrieval of information on magnetic storage media by using one or more novel approaches alone or in combination. These novel approaches are capable of using at least one code which may comprise more than... | 08/05/2008 |
| 7405823 | Signal noise reduction for imaging in biological analysis A system and method for characterizing contributions to signal noise associated with charge-coupled devices adapted for use in biological analysis. Dark current contribution, readout offset contribution, photo response non-uniformity, and spurious charge contributio... | 07/29/2008 |
| 7359049 | Light source device and spectrophotometer with the light source device A light source device for a spectrophotometer includes a light source chamber, a light source retained in the light source chamber and having an electrode therein for generating light, an electrode support part connected to the electrode and extending outside the li... | 04/15/2008 |
| 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 |
| 7339168 | System and method for detecting water vapor within natural gas A system and method are disclosed for the detection of water vapor in a natural gas background. The system includes a light source operating in a wavelength range such as, 1.877-1.901 μm, 2.711-2.786 μm, or 920-960 nm, passes through the natural gas to be detected... | 03/04/2008 |
| 7321425 | Sensor and methods for measuring select components in sheetmaking systems A sensor for measuring at least selected component in a composition can include: (a) a broadband light source, (b) an acousto-optic tunable filter (AOTF), (c) means for generating a beam of light from the light source and directing the beam of light at the AOTF wher... | 01/22/2008 |
| 7304436 | Generator for sustaining pulse of plasma display panel It is disclosed that there is a sustaining pulse generator of a plasma display panel capable of simplifying a circuit configuration thereof. A sustaining pulse generator of a plasma display panel according to an embodiment of the present invention includes a ... | 12/04/2007 |
| 7286232 | Fluorescence filtering system and method for molecular imaging An optical system is disclosed that can be used for fluorescence filtering for molecular imaging. In one preferred embodiment, a source subsystem is disclosed comprising a light source and a first set of filters designed to pass wavelengths of light in an absorption... | 10/23/2007 |
| 7265824 | Method and device for obtaining a low-noise optical signal The invention relates to a method and a device for obtaining a low-noise optical signal. According to the method, a luminous beam is injected through two apertures and after detection respectively a basic optical signal (21) and a corrective optical si... | 09/04/2007 |
| 7239383 | Method and apparatus for spectral modulation compensation The embodiments disclosed herein generally relate to identifying and removing background noise in spectroscopic imaging of a sample. Because white-light has essentially constant intensity at every wavelength, background noise caused by white light can be identified ... | 07/03/2007 |
| 7233393 | Signal noise reduction for imaging in biological analysis A system and method for characterizing contributions to signal noise associated with charge-coupled devices adapted for use in biological analysis. Dark current contribution, readout offset contribution, photo response non-uniformity, and spurious charge contributio... | 06/19/2007 |
| 7183945 | Method and system for video capture of vehicle information A system for collecting and managing information relating to vehicles includes a digital image collection system positioned to capture an image of a vehicle travelling along a roadway. The captured images are delivered to a computer program memory via a communicatio... | 02/27/2007 |
| 7170596 | Atomic absorption spectrophotometer with a background correcting function An atomic absorption spectrophotometer including a self reverse type hollow cathode lamp and a photomultiplier tube further includes a preliminary tester for measuring a strength of a signal L when a smaller current is supplied to the hollow cathode lamp and a stren... | 01/30/2007 |
| 7167238 | Atom absorption spectroscopy method and atom absorption spectrometer Atom absorption spectroscopy method generates at least one first beam of monochromatic radiation at a certain wavelength. Radiation is separated into a test beam and a reference beam, and only the test beam is led through a test area. Subsequently, both beams pass t... | 01/23/2007 |
| 7130044 | Atomic absorption spectrophotometer At the time of measurement of a sample, before a sample is introduced into a graphite tube, signal voltages which would be detected by a photomultiplier in connection with all programmable combinations of atomizing temperatures of a graphite tube, widths of entrance... | 10/31/2006 |
| 7064828 | Pulsed spectroscopy with spatially variable polarization modulation element A metrology device, such as an ellipsometer, includes a light source that produces a pulsed electromagnetic beam, such as a flash bulb or pulsed laser, and a spatially dependent polarizing element that introduces a spatially dependent retardation in the light beam. ... | 06/20/2006 |
| 7061613 | Polarizing beam splitter and dual detector calibration of metrology device having a spatial phase modulation An ellipsometer with a variable retarder, which introduces a spatial dependence in the beam, includes a polarizing beam splitter to produce two beams with orthogonal polarization states. The beam splitter may be, e.g., a polarizing displacer or polarizing beam split... | 06/13/2006 |
| 7001526 | Optical isomer separation method Methods for separation of two optical isomers in a racemate into its constituent isomers by statistical means are described, whereby the saturated racemate solution is first allotted into small samples by means of microfluidic or inkjet techniques to obtain small sa... | 02/21/2006 |
| 6977725 | Atom absorption spectroscopy method and atom absorption spectrometer Atom absorption spectroscopy method generates at least one first beam of monochromatic radiation at a certain wavelength. Radiation is separated into a test beam and a reference beam, and only the test beam is led through a test area. Subsequently, both beams pass t... | 12/20/2005 |
| 6972839 | Optical spectrum analyzer and optical spectrum detecting method In an optical spectrum analyzer comprising a spectrograph and a photodevice array, and an optical spectrum detecting method, a wavelength deviation, from an assigned wavelength, of a light detected by a photodevice array which detects a wavelength of a diffraction l... | 12/06/2005 |
| 6958479 | Method of processing data from a spectrophotometer A method of processing data from at least one spectrophotometer characterized by the steps of transferring the data from the spectrophotometer to a control processing unit, processing the data at the central processing unit, and transferring the processed data to th... | 10/25/2005 |
| 6952641 | Software architecture of an integrated host system for sensed vehicle data A system for processing sensed vehicle data includes a sensor for sensing data related to at least one characteristic of a passing vehicle and a host unit that receives sensed data from the sensor. The sensor and the host unit are integrated into a single housing. T... | 10/04/2005 |
| 6928916 | Infrared friend or foe identification system The present invention resides in an infrared identification system for identifying military vehicles as friendly or hostile. The infrared identification system includes a seed introduction system, in each friendly vehicle, that introduces trace quantities of a parti... | 08/16/2005 |
| 6906323 | Method and apparatus for generation of molecular beam Here is disclosed a method for generation of a molecular beam from a sample solution, comprising steps of operating a spray-in device to introduce the sample solution in atomized state into a spray chamber, impinging a suitable gas on the sample solution in atomized... | 06/14/2005 |
| 6881760 | Methods for monitoring solids content in Fischer-Tropsch products A method for monitoring the solids content in a Fischer-Tropsch product to allow subsequent changes in the Fischer-Tropsch process to prevent downstream problems. The method comprises irradiating the Fischer-Tropsch product with light and measuring the light transmi... | 04/19/2005 |
| 6879395 | Spectrum measuring instrument In a spectrum measuring instrument of the present invention, a detecting surface of a detector is a two-dimensional detecting surface and spectrum light coming out from a dispersing element and is irradiated to a region A on the detecting surface. Signal intensity a... | 04/12/2005 |
| 6844199 | Direct detection of bacteria-antibody complexes via UV resonance Raman spectroscopy A system for the detection of bacteria based on bacteria-antibody complexes. Bacteria attached to antibody are detected with resonance Raman spectroscopy. The bacteria are detected directly in a great numerical excess, e.g. 100 to 10,000 of antibody molecules. A sam... | 01/18/2005 |
| 6801309 | Detector array with scattered light correction The subject invention relates to a method of mitigating the effects of spurious background signals in spectroscopic measurement systems. The design of a broadband imagining spectrometer is disclosed that enables direct measurement of the spurious optical background ... | 10/05/2004 |
| 6717669 | Self-calibrating spectrometers and auto-calibration methods Auto-calibrating spectrometers and methods that measure transmission or reflection versus wavelength of a sample without need for calibration for long periods of time. Reflection and transmission spectrometers along with auto-calibrating methods for use therewith ar... | 04/06/2004 |
| 6683685 | Atomic absorption photometer In an atomic absorption photometer, depending on a fact whether a background correction is carried out or not, a pattern of a pulse lighting of light sources and a timing of sampling a light receiving signal are changed. Namely, at the time of a backgroun... | 01/27/2004 |
| 6680473 | Atomic beam control apparatus and method An atomic beam control apparatus controls a position of an atomic beam that passes through a multi-pole magnetic field by irradiating the atomic beam with a light beam. The apparatus includes a probe light generator to generate probe light to detect a pos... | 01/20/2004 |
| 6674527 | Ratiometric background correction for fluorescence polarization assays A method in which a multiplicative ratio approach is used to remove the effects of the unwanted background fluorescence when making fluoroescence polarization (FP) measurements rather than the conventional subtractive approach, thus preserving both the pr... | 01/06/2004 |
| 6643011 | SNR calculation method and optical spectrum measurement apparatus An SNR calculation method having the steps of measuring the wavelength characteristic of a dynamic range in an optical spectrum measurement apparatus for each wavelength in a multiplexed wavelength range and storing the wavelength characteristic in a stor... | 11/04/2003 |
| 6608670 | Laser verification and authentication raman spectrometer (LVARS) detecting the stokes and/or anti-stokes emission The LVARS is a fully instrumental, non-destructive spectroscopic device for the analysis and verification and authentication of the optical and electromagnetic properties (OEMP) of the inks, dyes, thin films, plastics, toners, paper, fixatives, paints, an... | 08/19/2003 |
