Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 4987341 | Flash lamp with metal coating on an outer end of an electrode thereof A flash lamp which has two electrodes of refractory metal fused into a glass housing. In order to enable a soft-soldered connection, the outer end of the electrodes is respectively connected to a soft-solderable metal coating.... | 01/22/1991 |
| 4870670 | X-ray scanner with secondary radiation detector An article inspection system has separate detectors for primary radiation and scattered radiation which are generated by an article upon being irradiated with X-radiation. The scattered radiation detector is disposed so that no primary radiation is incide... | 09/26/1989 |
| 4841554 | X-ray scanner for inspecting articles moving therethrough An x-ray scanner for inspecting articles moving therethrough, such as on a conveyor, has a frame on which an x-ray source, a collimator for the x-ray beam, and a radiation detector are mounted. The frame resists flexural and torsional stresses so as to ma... | 06/20/1989 |
| 4775895 | Modular image sensor structure An image sensor module for reading optical information on an original and converting the information into electrical signals, has a row of opto-electrical sensors, each sensor having associated processing circuitry integrated therewith in the module. The ... | 10/04/1988 |
| 4673884 | Circuit for measuring the anode current in an X-ray tube A circuit for measuring anode current in an X-ray tube having an anode and a heater electrode both operable at high voltage, includes a heater transformer generating current pulses with a timewise constant first pulse repetition frequency and an adjustabl... | 06/16/1987 |
| 4672268 | Gas discharge lamp with sintered cathode A gas discharge lamp such as a flashbulb consisting of an anode and a cathode in a transparent housing, the cathode being composed of a sintered member made up of powdered titanium (Ti), and vanadium (V), as well as at least one of the other metals tantal... | 06/09/1987 |
| 4566113 | Method and apparatus for examining the content of containers Method for examining the content of containers, which includes weighing the container, comparing the weight of the container with a total weight derived from the net weight of a given load and the product of the volume and the packing weight of the given ... | 01/21/1986 |
| 4359488 | Method of producing a double layer having a hetero-junction for a storage electrode of a camera device A double layer having a hetero-junction interface for a storage electrode of an electro-optical camera device is produced by vacuum vapor deposition of n-conductive cadmium selenide or cadmium sulfo-selenide onto a n+ -conductive signal electro... | 11/16/1982 |
| 4342941 | Thermal image exposure plate A thermal image exposure plate is disclosed having a grid pattern on one side thereof exposed to thermal radiation. The grid pattern depth is less than a thickness of the plate. High image resolution and image sensitivity results. The plate is useful in t... | 08/03/1982 |
| 4322620 | Camera tube for thermal imaging A camera tube for thermal imaging is disclosed comprising an entrance window of an electrically conductive material, a target for converting the thermal image, and an electron beam system for scanning the target. Incident thermal radiation is modulated by... | 03/30/1982 |
| 4310781 | Controllable hydrogen source with gettering effect for electronic tubes A Zr-C sintered body is charged with H2 to form zirconium hydride within the body and such body is positioned in working association with a heating means within an electronic tube, such as a vidicon tube, which utilizes hydrogen as a supporting... | 01/12/1982 |
| 4283702 | Contactless conductance potentiometer A contactless conductance potentiometer is provided in which the total conductance between two electric terminals can be selectively divided, the two parts being equal to the total conductance. This can be accomplished by using a ring-shaped photoconducto... | 08/11/1981 |
| 4245217 | Passive infrared alarm device A passive infrared alarm device evaluates the changes in infrared radiation level of a monitored room or a monitored portion of a room for alarm purposes. In accordance with the invention, an infrared sensing element is employed toward which an optical re... | 01/13/1981 |
| 4219757 | Gas discharge lamp A gas discharge lamp having a glass tube with preformed sintered glass bodies sealed to each end with each body carrying at least one connector pin for an electrode so that at least one electrode is disposed and supported adjacent each end of the discharg... | 08/26/1980 |
