...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
| Number | Title | Issue Date |
| 7525706 | Data page pixel shaping for holographic recording The shaping of pixels of a data page for holographic recording, a holographic recording medium including data pages with shaped pixels, and apparatuses for writing to or reading from such holographic recording media are disclosed. A device for modulating a li... | 04/28/2009 |
| 7428113 | Device for reading from and/or writing to optical recording media The present invention relates to a device for reading from and/or writing to optical recording media, having a light source for producing a scanning beam for scanning the optical recording medium, detection means for detecting the beam influenced by the optical reco... | 09/23/2008 |
| 7385741 | Holographic recording system and optical chopper A holographic recording system with a simple structure is provided that can make a holographic recording beam follow a recording medium traveling even at high speed. The holographic recording system 10 includes a chopper lens 30 that travels in synchro... | 06/10/2008 |
| 7372602 | Method for recording and reproducing holographic data and an apparatus therefor A holographic recording and reproducing method for recording data in a holographic recording medium comprising a recording layer in which data are to be recorded as phase information of light by projecting a signal beam and a reference beam thereonto and a servo lay... | 05/13/2008 |
| 7371562 | Guided mode resonant filter biosensor using a linear grating surface structure Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also provides optical devices useful as narrow band filters. ... | 05/13/2008 |
| 7367759 | Surface relief grating image machining process and product A surface relief grating (SRG) image machining process and/or product. For the SRG image machining process a material and a cutting tool are provided. The material is contacted by the cutting tool to a predetermined depth. The cutting tool is rotated to cut the mate... | 05/06/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7337552 | Method and apparatus for registration with integral alignment optics A method and apparatus for front to back substrate registration is described. Alignment characteristics of features on surfaces of substrates can be used to physically align substrates with a multiplicity of integrated alignment optics. Measurement of offsets of the... | 03/04/2008 |
| 7339711 | Angle-multiplexing hologram recording device, method, hologram reproduction device, and method A hologram recording apparatus (100) includes a record angle change device (19) capable of relatively changing the record angle of a hologram recording medium (200) relative to signal light (L3) and reference light (L2); and a cont... | 03/04/2008 |
| 7333253 | Multiplex recording type hologram recording device, method, hologram reproduction device, and method A hologram record apparatus (100) includes a parameter set device (19), a move device (20), and a control device (18). The parameter set device (19) modifies parameters for multiple recordings such as a record angle and a focal dep... | 02/19/2008 |
| 7327454 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 02/05/2008 |
| 7324286 | Optical beam steering and switching by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency PTR Bragg gratings Non-mechanical optical beam steering and switching is produced by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency volume Bragg gratings recorded in a photosensitive PTR glass. Small angle beam deflection in a... | 01/29/2008 |
| 7321421 | Apparatus and methods for scanning conoscopic holography measurements Apparatus and methods for scanning conoscopic holography measurements are disclosed. In one embodiment, a system includes a conoscopic holography sensor, a beam directing assembly, and a control assembly. The beam directing assembly is adapted to adjustably direct a... | 01/22/2008 |
| 7312090 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 12/25/2007 |
| 7313253 | Methods and tangible objects employing machine readable data in photo-reactive materials The present invention relates generally to steganography and data hiding. In one implementation we provide a method including: obtaining auxiliary data; providing a mask for a photo-reactive material, the mask corresponding at least in part to the auxiliary data; an... | 12/25/2007 |
| 7300803 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 11/27/2007 |
| 7301628 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 11/27/2007 |
| 7292336 | Method and instrument for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An instrument system for detecting a biochemical interaction on a biosensor. The system includes an array of... | 11/06/2007 |
| 7289255 | Hologram apparatus, positioning method for spatial light modulator and image pickup device, and hologram recording material The present invention provides a hologram apparatus for recording interference fringes formed from reference light and signal light optically spatially modulated by a spatial light modulator on a hologram recording material or picking up an image of reproduction sig... | 10/30/2007 |
| 7286743 | High dynamic range integrated receiver A high dynamic range integrated (HDRI) receiver includes a variable optical attenuator (VOA) for attenuating an incoming optical signal before the optical signal is directed to a photo-detector for conversion into an electrical signal. An optical block receives the ... | 10/23/2007 |
| 7264973 | Label-free methods for performing assays using a colorimetric resonant optical biosensor The instant invention provides compositions and methods for determining cell interactions that are faster than conventional methods and that require the use of fewer reagents than conventional methods. ... | 09/04/2007 |
| 7251066 | Holographic memory using beam steering A method, apparatus, and system provide the ability for storing holograms at high speed. A single laser diode emits a collimated laser beam to both write to and read from a photorefractice crystal. One or more liquid crystal beam steering spatial light modulators (B... | 07/31/2007 |
| 7239594 | Self-referenced holography using element formed on a holographic medium The invention is directed to self-referenced holographic recording techniques that make use of an element of a holographic medium to create a reference beam from a zero frequency Fourier component of a data encoded object beam. In other words, the self-referencing e... | 07/03/2007 |
| 7227675 | Hologram recording medium, recording/reproducing apparatus and method therefor A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when recording data to the hologram recording medium, and an amount of noise when ... | 06/05/2007 |
| 7227688 | Apparatus for applying optical gradient forces An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system... | 06/05/2007 |
| 7217574 | Method and apparatus for biosensor spectral shift detection Performing high-resolution determination of the relative shift of the spectral properties of a biosensor. The shift in the resonance peak of the biosensor is indicative of the amount of material bound to the surface of the biosensor. A preferred biosensor is a Guide... | 05/15/2007 |
| 7209270 | Method and apparatus for phase correlation holographic drive A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a phase beam of unchanging phase content. The apparatus also includes a ... | 04/24/2007 |
| 7206108 | Method for recording and reproducing holographic data and holographic recording medium A holographic recording and reproducing method for recording holographic data in and reproducing holographic data from a holographic recording medium including a recording layer in which data are to be recorded as phase information of light by projecting a signal be... | 04/17/2007 |
| 7205675 | Micro-fabricated device with thermoelectric device and method of making A micro-fabricated device, includes a support structure having an aperture formed therein, and a device substrate disposed within the aperture. The micro-fabricated device further includes a thermally isolating structure thermally coupling the device substrate to th... | 04/17/2007 |
| 7202076 | Label-free high-throughput optical technique for detecting biomolecular interactions Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also provides optical devices useful as narrow band filters. ... | 04/10/2007 |
| 7196950 | Non-volatile semiconductor storage device performing ROM read operation upon power-on A power-on reset circuit has a power-on level detecting circuit which detects a power voltage to output a power-on reset signal and a delay circuit which delays the power-on reset signal output by the power-on level detecting circuit. Two chip address specifying pad... | 03/27/2007 |
| 7190522 | Chemical synthesis using diffraction grating-based encoded optical elements An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being emb... | 03/13/2007 |
| 7184138 | Spatial filter for sample inspection system Spatial filtering is disclosed that improves the signal to noise ration of a sample inspection system of the type having a detector and collection optics that receive radiation scattered from a point on a sample surface and direct the scattered radiation toward the ... | 02/27/2007 |
| 7180644 | Holographic storage lenses Disclosed are holographic storage systems and lenses for holographic storage systems. The lens units can be of a two-component design. The lenses can be used to both record to photorefractive storage media and to read from photorefractive storage media. ... | 02/20/2007 |
| 7175980 | Method of making a plastic colorimetric resonant biosensor device with liquid handling capabilities Methods of producing liquid handling biosensor devices are provided. The liquid handling biosensor devices allow detection of biomolecular interactions in liquid. The use of labels is not required and the methods can be performed in a high-throughput manner. ... | 02/13/2007 |
| 7170599 | Method and instrument for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An instrument system for detecting a biochemical interaction on a biosensor. The system includes an array of... | 01/30/2007 |
| 7158230 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 01/02/2007 |
| 7154645 | Holographic recording method and apparatus A holographic recording method and a holographic recording apparatus capable of selectively rewriting or erasing only desired data without degrading data other than the desired data are provided. Holograms are multiple recorded per file, and page data in one file is... | 12/26/2006 |
| 7153702 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 12/26/2006 |
| 7154646 | Optical recording apparatus and optical recording/reproducing apparatus An optical recording/reproducing apparatus having excellent resistance against vibration and noise. In recording, coherent light is polarization-modulated with a spatial light modulator to generate signal light and reference light whose polarization directions are c... | 12/26/2006 |