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 |
| 7158048 | Identically programmed intelligent electrodes for use in geoelectrical surveys Apparatus for conducting geophysical surveys comprising a multiplicity of intelligent electrodes provided on a multi-conductor cable, for receiving a command signal in response to which predetermined electrodes are connected to selected conductors in the cable. Each... | 01/02/2007 |
| 6255825 | Method and apparatus for detecting, locating and resolving buried pipelines, cased wells and other ferrous objects A method and apparatus are provided for surveying a given region for the presence of ferromagnetic items and other sources of magnetic field disturbance on or under the ground, such as pipelines and wellheads, etc. An array of magnetic field sensors, moun... | 07/03/2001 |
| 6229313 | Mapping of pipeline grounding points by airborne or ground magnetic measurements of current flow in the pipeline Apparatus for remotely determining the amount of current I flowing in a long, linear conductor, comprising a first sensor for measuring at a first location a magnetic field H arising due to current flow, a second sensor for measuring at a second location ... | 05/08/2001 |
| 5395589 | Apparatus for rapid and specific detection of organic vapors Apparatus for preconcentrating trace amounts of organic vapors in a sample of air for subsequent detection, comprising a metallic substrate; a thin film of fullerenes deposited on the metallic substrate for adsorbing the organic vapors on the thin film of... | 03/07/1995 |
| 5015590 | Method of determining nitrogen dioxide concentration in a gas sample which contains ozone The interference of ozone in the determination of nitrogen dioxide determinations by luminol chemiluminescence is eliminated by first passing the gas sample into contact with a selective reducing agent for ozone, particularly antimony trioxide.... | 05/14/1991 |
| 4249129 | Efficient simultaneous electromagnetic transmission or reception at different frequencies in electromagnetic mapping This invention relates to electromagnetic mapping wherein magnetic fields of two or three different and normally audio frequencies may be transmitted or received efficiently using induction coils with the same orientation and essentially the same spatial ... | 02/03/1981 |
| 4239964 | Method for uranium determination This invention is a method that uses the previously undiscovered fact that the phosphorescent lifetime of the uranyl ion at very dilute concentrations in an aqueous solution is anomalously long in comparison to that of other commonly-occurring phosphoresc... | 12/16/1980 |
| 4198568 | Apparatus and method for uranium determination A method of detecting uranium compounds in an aqueous sample, containing uranium compounds that phosphoresce in response to ultraviolet light and other compounds which luminesce but have a shorter lifetime of phosphorescence than uranium compounds compris... | 04/15/1980 |
| 4114086 | Inductive source method of induced polarization prospecting A method of geophysically prospecting a polarizable medium by measuring induced polarization effects wherein the medium is inductively polarized by a time varying current in an induction coil that varies with respect to time unidirectionally to maintain a... | 09/12/1978 |
