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Class Information
Number: 976/DIG.380
Name: Nuclear technology > Decontamination arrangements; treating radioactively contaminated material [g21f-9/00] > Treating liquids [g21f-9/04] > Processing [g21f-9/06]

Sub-classes under this class:

Class Number Class Name Patents
976/DIG.383 By absorption; by adsorption; by ion exchange [g21f-9/12] 61
976/DIG.386 By biological processes [g21f-9/18] 4
976/DIG.381 By evaporation; by distillation [g21f-9/08] 59
976/DIG.385 By fixation in stable solid media [g21f-9/16] 207
976/DIG.382 By flocculation [g21f-9/10] 19
976/DIG.384 By incineration; by calcination (e.g., desiccation) [g21f-9/14] 48

Patents under this class:
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Patent Number Title Of Patent Date Issued
6040491 Method and apparatus handling radioactive waste material Mar. 21, 2000
5564103 Reducing the volume of depleted ion exchange bead resin Oct. 8, 1996
5523514 Process for dissolving plutonium and/or other radioactive elements present in solid or liquid products Jun. 4, 1996
5411149 Aqueous biphasic extraction process with pH and particle control May. 2, 1995
5087411 Device and process for underwater recovery and elimination of radioactive waste Feb. 11, 1992
5047203 Purifier for nuclear reactor cooling water and method of purification Sep. 10, 1991
5041193 Acitnide recovery Aug. 20, 1991
4938895 Process for removing radioactive ruthenium from aqueous solution Jul. 3, 1990
4931153 Electrolytic treatment of radioactive liquid waste to remove sodium Jun. 5, 1990
4925597 Method for the decontamination of radioactively contaminated liquids May. 15, 1990
4925643 Regeneration of nitrous acid by oxidation with direct application of heated nitric acid May. 15, 1990
4925566 Ultrafiltration, hyperfiltration or demineralization element, its production process and its use for the treatment of liquid radioactive effluents May. 15, 1990
4898963 Process for the recovery of acid organophosphorus compounds and/or organophosphate ions present in an aqueous solution Feb. 6, 1990
4897221 Process and apparatus for classifying, segregating and isolating radioactive wastes Jan. 30, 1990
4891116 Method and apparatus for electrochemically decomposing inorganic materials contained in an aqueous radioactive waste solution Jan. 2, 1990
4874485 Method for the treatment of waste matter Oct. 17, 1989
4871478 Method of improving the criticality safety in a liquid-liquid extraction process for spent nuclear fuel or breeder reactor materials Oct. 3, 1989
4863637 Process for treating waste liquids of acid decontamination agents Sep. 5, 1989
4849074 Method and apparatus for electrochemically decomposing inorganic materials contained in an aqueous radioactive Jul. 18, 1989
4844838 Method of treatment of radioactive liquid waste Jul. 4, 1989
4841998 Soil decontamination method Jun. 27, 1989
4828691 Submersible purification system for radioactive water May. 9, 1989
4824607 Process for denitrating aqueous, nitric acid and salt containing waste solutions Apr. 25, 1989
4749455 Method of treating contaminated aqueous phosphoric acid solutions Jun. 7, 1988
4681705 Decontamination of radioactively contaminated liquids Jul. 21, 1987
4645625 Decontamination of a radioactive waste liquid by electrodialysis Feb. 24, 1987
4637866 Recovery method of tritium from tritiated water Jan. 20, 1987
4627937 Process for denitrating nitric acid and actinide containing waste solutions while simultaneously separating the actinides Dec. 9, 1986
4595529 Solvent wash solution Jun. 17, 1986
4572797 Method for removing trace pollutants from aqueous solutions Feb. 25, 1986
4563335 Apparatus for continuously concentrating and denitrating nitrate solution by microwave Jan. 7, 1986
4549985 Waste disposal process Oct. 29, 1985
4540490 Apparatus for filtration of a suspension Sep. 10, 1985
4540512 Recovery of boric acid from nuclear waste Sep. 10, 1985
4507390 Chromatographic analysis for anions involving complexing anions with a polyhydric alcohol Mar. 26, 1985
4487670 Process for treating solutions containing tritiated water Dec. 11, 1984
4460474 Process for the extraction of cesium ions from aqueous solutions using an adduct compound in solid form comprising a macrocyclical polyether and an inorganic heteropoly acid Jul. 17, 1984
4452702 Process for the extraction of cesium ions from aqueous solutions using an adduct compound containing a macrocyclical polyether and an inorganic heteropoly acid Jun. 5, 1984
4439326 Process for removing ammonium nitrate from aqueous solutions Mar. 27, 1984
4436655 Process for the continuous purification of contaminated fluids and for conditioning the resulting concentrates Mar. 13, 1984
4432955 Process for desorbing fission iodine from nitric acid fuel solution Feb. 21, 1984
4427503 Method for reducing the acid content of a nitric acid solution by using electrolysis current Jan. 24, 1984
4415457 Process for treating liquid waste containing solid fine particles Nov. 15, 1983
4409137 Solidification of radioactive waste effluents Oct. 11, 1983
4404130 Process for the plutonium decontamination of an organic solvent Sep. 13, 1983
4379082 Method of removing ruthenium contamination from a liquid radioactive effluent Apr. 5, 1983
4376066 Method for preparing a catalyst for an isotopic exchange column Mar. 8, 1983
4362660 Mercuric iodate precipitation from radioiodine-containing off-gas scrubber solution Dec. 7, 1982
4344872 Method and apparatus for removing waste products from solutions of fission products Aug. 17, 1982
4340499 Method for treating radioactive solutions Jul. 20, 1982

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