...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.
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| Application No. | Application Title | Issue Date |
| 20120105826 | High Sampling Resolution DTS System and Method A method of improving sampling resolution in a distributed temperature measurement system using a fiber optic distributed sensor by means of programmed delayed trigger signals to a laser light source in order to improve the spatial resolution of such systems.... | 05/03/2012 |
| 20120026482 | Use of fiber optic sensor techniques for monitoring and diagnostics of large AC generators A method for monitoring the operating conditions of an electric generator including the entire stator core and all winding components for conditions of mechanical strain and temperature throughout the machine by means of distributive fiber optic sensors based on both Ra... | 02/02/2012 |
| 20110069301 | METHOD AND DEVICE FOR SINTERING AN OBJECT WHILE DETERMINING THE GEOMETRIC SURFACE PROFILE OF THE OBJECT The invention relates to a method and a device for sintering objects by means of time-resolved detection of two- or three-dimensional surface profiles and, optionally, by means of temperature measurement in a high temperature furnace on the basis of optical measurement ... | 03/24/2011 |
| 20100014060 | LITHOGRAPHIC APPARATUS, A METROLOGY APPARATUS AND A METHOD OF USING THE APPARATUS A lithographic projection apparatus is disclosed that comprises a substrate table, a projection system, a liquid confinement structure and a thermal measurement system. The substrate table is configured to support a substrate. The projection system is configured to dire... | 01/21/2010 |
| 20090323759 | Temperature measurement with reduced extraneous infrared in a processing chamber Temperature measurement using a pyrometer in a processing chamber is described. The extraneous light received by the pyrometer is reduced. In one example, a photodetector is used to measure the intensity of light within the processing chamber at a defined wavelength. A ... | 12/31/2009 |
| 20090251684 | OPTICAL TRANSMISSION MODULE, WAVELENGTH MONITOR, AND WAVELENGTH DRIFT DETECTION METHOD To detect a wavelength drift of laser light with no error, an optical transmission module (10) includes: a laser diode (20); a laser temperature calculation section (52) for detecting the temperature of the laser diode (20) that monotonously ... | 10/08/2009 |
| 20090225302 | Method and Apparatus for Measuring Insertion Loss in a Fiber Optic Cable Connection A method and apparatus for measuring the insertion loss of a fiber optic connection is provided. The invention generally comprises a light source providing light to a test connector which contains a juncture of two fiber optic cables. The test connector has one or more ... | 09/10/2009 |
| 20090153837 | OPTICAL POWER MONITOR BASED ON THERMO-CHROMIC MATERIAL This invention relates to an optical power monitor based on thermo-chromic material. The incident light produces a temperature change in the thermo-chromic material, causing a change in its color which is utilized to monitor the power level of the incident light.... | 06/18/2009 |
| 20070268477 | METHOD AND DEVICE FOR MEASURING THE TEMPERATURE OF A MOLTEN METAL BATH A method is provided for measuring a temperature of a molten metal bath by an optical fiber surrounded by a cover. The optical fiber is immersed in the molten bath, and the radiation absorbed by the optical fiber in the molten bath is fed to a detector, wherein the opti... | 11/22/2007 |