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| Number | Title | Issue Date |
| 6925870 | Ultrasonic fill level device and method A fluid level monitoring system 20 includes an ultrasonic interrogation device 30 acoustically coupled to a sidewall 25 of container 22 and produces ultrasound that travels through the liquid 24 along a transverse path 32 an... | 08/09/2005 |
| 5316411 | Apparatus for in situ heating and vitrification An apparatus for decontaminating ground areas where toxic chemicals are buried includes a plurality of spaced electrodes located in the ground and to which a voltage is applied for bringing about current flow. Power delivered to the ground volatilizes the... | 05/31/1994 |
| 5114277 | Vitrified underground structures A method of making vitrified underground structures in which 1) the vitrification process is started underground, and 2) a thickness dimension is controlled to produce substantially planar vertical and horizontal vitrified underground structures. Structur... | 05/19/1992 |
| 5100259 | Cold cap subsidence for in situ vitrification and electrodes therefor An electrode for use in in situ vitrification of soil comprises a molybdenum rod received within a conductive sleeve or collar formed of graphite. Electrodes of this type are placed on either side of a region containing buried waste material and an electr... | 03/31/1992 |
| 4957393 | In situ heating to detoxify organic-contaminated soils A method and apparatus for decontaminating ground areas where toxic chemicals are buried comprises disposition of a plurality of spaced electrodes in the ground to be treated and application of a voltage across the electrodes for bringing about current fl... | 09/18/1990 |
| 4956535 | Electrode systems for in situ vitrification An electrode comprising a molybdenum rod is received within a conductive collar formed of graphite. The molybdenum rod and the graphite collar may be physically joined at the bottom. A pair of such electrodes are placed in soil containing buried waste mat... | 09/11/1990 |
| 4376598 | In-situ vitrification of soil A method of vitrifying soil at or below a soil surface location. Two or more conductive electrodes are inserted into the soil for heating of the soil mass between them to a temperature above its melting temperature. Materials in the soil, such as buried w... | 03/15/1983 |
