| Patents for C22B 43 - Obtaining mercury (631) |
|---|
| 05/31/2000 | EP0946770B1 Installation and method for removing mercury from waste materials by vacuum distillation |
| 03/08/2000 | EP0805716B1 Mercury recovery process |
| 01/19/2000 | EP0972571A2 Mercury recovery process |
| 12/23/1999 | WO1999056867A3 Integrated fixation systems |
| 11/23/1999 | US5989486 Apparatus for removal of the mercury from granulated materials |
| 11/11/1999 | WO1999056867A2 Integrated fixation systems |
| 10/20/1999 | EP0808379B1 Method and device for separating mercury vapour in connection with cremation |
| 10/19/1999 | US5968461 Screening, separating, adding hypochlorite, leaching, rinsing; salt formation with sodium sulfide; sulfiding |
| 10/06/1999 | EP0946770A1 Installation and method for removing mercury from waste materials by vacuum distillation |
| 09/28/1999 | US5957397 Method for handling mercury containing lamps |
| 08/31/1999 | US5944196 Mercury recovery process |
| 08/18/1999 | CN1044725C Procedure to obtain mercury metal from products containing mercuric chloride |
| 08/04/1999 | EP0617740B1 Extraction of mercury and mercury compounds from contaminated material and solutions |
| 07/27/1999 | US5928617 Process for removal of mercury contamination |
| 07/22/1999 | DE19801321A1 Decontamination of solid materials containing mercury |
| 07/01/1999 | WO1999033137A1 Integrated fixation systems |
| 06/19/1999 | CA2225367A1 Containerized metal fixation apparatus |
| 06/10/1999 | WO1999028738A1 Dropping mercury electrode with mercury purification and recycling by means of contact with oxygenated water |
| 05/11/1999 | US5902376 Drops of mercury settling at the bottom of a vertical tube having liquid upwardly flowing countercurrent to sludge entering at the top; low-density sludge removed at top |
| 05/04/1999 | US5900042 Treating gaseous emissions with aqueous oxidizing solutions to form soluble mercury compounds, then scrubbing with aqueous solution to remove compounds |
| 05/04/1999 | CA2117754C Mercury contaminated mud treatment |
| 04/06/1999 | US5891216 Oven, mercury trap and condenser |
| 04/01/1999 | WO1999015283A1 Process for cleaning mercury-contaminated soils |
| 04/01/1999 | CA2301729A1 Process for cleaning mercury-contaminated soils |
| 03/30/1999 | CA2123766C Extraction of mercury and gold from mine tailings |
| 02/23/1999 | CA2173271C Purification of elemental sulphur |
| 02/23/1999 | CA2144858C Method for removing mercury from contaminated soils and industrial wastes and related apparatus |
| 02/04/1999 | WO1999004913A1 Method and arrangement for destruction of hazardous waste |
| 02/04/1999 | CA2296588A1 Method and arrangement for destruction of hazardous waste |
| 01/28/1999 | WO1999003609A1 A process for separating a contaminating substance from a material contaminated by said substance |
| 01/20/1999 | EP0781174A4 Methods of decontaminating soils containing hazardous metals |
| 01/20/1999 | EP0781173A4 Method of decontaminating nuclear waste-containing soil |
| 01/05/1999 | US5855691 Mercury recovery process |
| 12/30/1998 | EP0887429A1 Process and apparatus for treating heavy metals and halogenated hydrocarbons containing materials by thermal evaporation in vacuum |
| 12/10/1998 | WO1998055239A1 Electro-chemical method and device for decontaminating soils and silts contaminated by heavy metals |
| 12/10/1998 | DE19724786A1 Elektrochemisches Verfahren und Vorrichtung zur Dekontamination schwermetallverunreinigter Böden und Schluffe Electrochemical Method and apparatus for decontamination of heavy metal contaminated soils and silts |
| 11/12/1998 | WO1998050159A1 Apparatus and method for handling mercury containing lamps |
| 11/12/1998 | CA2288151A1 Apparatus and method for handling mercury containing lamps |
| 10/20/1998 | US5824282 Contacting a melt with activated alumina to remove metal contaminants |
| 10/08/1998 | WO1998044162A1 Dipyridylamine ligand bound to a polymer carrier for extracting metal ions |
| 09/08/1998 | US5803663 Mixing contaminated soil with an additive; heating to a temperature which is below the boiling point of the mercury compounds(s); recovering |
| 07/28/1998 | US5785935 Using liquid leachant |
| 07/02/1998 | DE19654513A1 Method for removing mercury from floors |
| 05/28/1998 | WO1998022628A1 Installation and method for removing mercury from waste materials by vacuum distillation |
| 04/28/1998 | US5744109 Using a thiocyanate complex of mercury in an acid media and hydrogen sulfide |
| 04/28/1998 | US5744107 Process for removing heavy metals from soil |
| 04/07/1998 | US5736053 Contacting liquid hydrocarbon with activated carbon which has been activated with gas comprising specified amount of water vapor |
| 03/10/1998 | US5725632 Method for processing and utilizing metalliferous presipitates from the gas cleaning phase in thermal waste treatment |
| 02/19/1998 | WO1998006478A1 Process for the removal of mercury from smelter gases |
| 12/04/1997 | WO1997045201A1 Separation of minerals |
| 11/29/1997 | CA2177555A1 Separation of minerals |
| 11/26/1997 | EP0808379A1 Method and device for separating mercury vapour in connection with cremation |
| 11/12/1997 | EP0805716A1 Mercury recovery process |
| 10/29/1997 | EP0619764B1 Process for removing heavy metals from soils |
| 09/24/1997 | CN1160365A Method of decontaminating nuclear waste-contg. soil |
| 08/26/1997 | US5660806 Deleading by leaching, dissolving in hydrochloric acid or sulfuric acid and a salt of alkali metal, alkaline earth metal or ammonium, recovering from liquid phase |
| 08/20/1997 | CN1157584A Method of decontaminating soils containing hazardous metals |
| 08/13/1997 | CN2259408Y Calomel roaster |
| 08/12/1997 | US5656251 Method of sulfur purification |
| 07/02/1997 | EP0781174A1 Methods of decontaminating soils containing hazardous metals |
| 07/02/1997 | EP0781173A1 Method of decontaminating nuclear waste-containing soil |
| 06/19/1997 | DE19547151A1 Separation and recovery of heavy metals such as cadmium@ and mercury@ from old batteries |
| 04/23/1997 | CN1148079A Method of eliminating mercury from liquid hydrocarbons |
| 03/18/1997 | US5613238 Mixing ammonia liquid with soils for ion removal, separation from soils |
| 03/04/1997 | US5607496 Removal of mercury from a combustion gas stream and apparatus |
| 02/04/1997 | US5599515 Method of removing mercury from solution |
| 01/29/1997 | EP0755994A2 Method of eliminating mercury from liquid hydrocarbons |
| 01/28/1997 | US5597729 Method for the removal and recovery of mercury |
| 01/28/1997 | CA2182154A1 Method for eliminating mercury from liquid hydrocarbons |
| 01/22/1997 | EP0754502A1 Method for removing mercury from soil |
| 01/19/1997 | CA2179836A1 Mercury-removal method |
| 01/08/1997 | EP0752276A1 Method and installation for the disposal of objects containing mercury |
| 12/04/1996 | EP0745439A2 Process for removing heavy metals from soil |
| 12/04/1996 | EP0745438A2 Process for removing heavy metals from soil |
| 11/07/1996 | DE19517320A1 Selectively removing mercury@ from power station or incineration gases washing water |
| 10/29/1996 | US5569154 Method and apparatus for removing mercury from mercury-contaminated soils |
| 10/23/1996 | EP0523208B1 Process and device for recycling articles containing metals or metal vapours |
| 10/16/1996 | CN1133201A Continual method for simultaneously collecting and precipitating mercury in mercury-containing gas |
| 09/17/1996 | US5556447 Detoxification of mercury contaminated soils with vaporization, contacting with carbon, separation and recovering mercury by heating, purging and condensing |
| 08/15/1996 | WO1996024700A1 Method and device for separating mercury vapour in connection with cremation |
| 08/07/1996 | EP0638129B1 Mercury contaminated mud treatment |
| 08/01/1996 | WO1996022834A1 Mercury recovery process |
| 07/23/1996 | CA1338463C Method for the recovery of mercury from mercury- containing material |
| 07/18/1996 | WO1996021745A1 Regenerative mercury removal process |
| 07/03/1996 | CN1125775A Procedure to obtain mercury metal from products containing mercuric chloride |
| 06/25/1996 | US5529605 Method and apparatus for removing mercury from contaminated pipes and installation parts, in particular mercury introduced by natural gas |
| 06/05/1996 | DE4442610A1 Method of treating mercury containing glass instruments to retrieve mercury |
| 06/04/1996 | US5523067 Removal of mercury from naturally occurring streams containing entrained mineral particles |
| 05/29/1996 | EP0663960A4 Method for removing mercury from contaminated soils and industrial wastes and related apparatus. |
| 05/14/1996 | US5517004 Process and apparatus for removing contaminations from bulk material |
| 05/14/1996 | US5516968 Methods of decontaminating mercury-containing soils |
| 05/01/1996 | EP0709475A1 Procedure to obtain mercury metal from products containing mercuric chloride |
| 05/01/1996 | EP0709126A1 Continuous procedure for the simultaneous collection and precipitacion of mercury in gases containing it |
| 04/27/1996 | CA2158672A1 Procedure to obtain mercury metal from products containing mercurous chloride |
| 04/24/1996 | EP0707869A1 A method for treating mercury-contaminated materials |
| 04/09/1996 | US5505925 Process for removing heavy metals from soil |
| 03/21/1996 | WO1996008324A1 Method of decontaminating nuclear waste-containing soil |
| 03/21/1996 | WO1996008323A1 Methods of decontaminating soils containing hazardous metals |
| 03/21/1996 | CA2198386A1 Methods econtaminating soils containing hazardous substances |
| 03/21/1996 | CA2198385A1 Methods of decontaminating soils containing hazardous metals |