| Patents for C22B 25 - Obtaining tin (604) |
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| 11/19/2002 | US6482372 Process for recovering palladium from a solution |
| 11/07/2002 | US20020162780 Solder dross removal apparatus |
| 11/06/2002 | EP1254734A1 Solder dross removal apparatus |
| 10/02/2002 | CN1372014A Method for recovering tin from tin plating, dipping and welding and apparatus thereof |
| 08/29/2002 | US20020119085 Process for recovering palladium from a solution |
| 08/14/2002 | CN1363427A Circuit products with welded parts and method for recovery of them for reuse |
| 08/01/2002 | WO2002059387A1 Process for recovering palladium from a solution |
| 07/24/2002 | EP0859873B1 Process for removing tin |
| 06/25/2002 | US6409798 Process for recovering metal material from waste material |
| 06/11/2002 | US6401635 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 04/03/2002 | EP1192288A1 Method for treating metal-containing waste by pyrometallurgy |
| 03/14/2002 | WO2002020858A1 Method for recuperating metal elements from zinc-bearing raw materials using molten lead |
| 02/20/2002 | CN1337144A Article having a circuit soldered with parts and method for recycling wastes of the same |
| 01/17/2002 | US20020005376 Method for separating oxide from dross, device for separating oxide from dross, and jet solder tank |
| 01/16/2002 | CN1331760A Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 12/05/2001 | EP1159467A1 Process for the recovery of tin, tin alloys or lead alloys from printed circuit boards |
| 12/05/2001 | CN1325460A Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 11/21/2001 | EP1156706A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 11/21/2001 | EP0792939B1 Method of melting tinned iron scrap |
| 11/21/2001 | CN1322852A Regeneration method and apparatus for polluted metal solution |
| 11/15/2001 | US20010041226 Heating, removal crystals, cooling |
| 11/15/2001 | DE10023373A1 Heat treatment apparatus used for pyrolyzing electronic scrap comprises a container as a vacuum chamber with a suction device arranged in the upper region and immersed in a crucible containing a liquid heat carrier |
| 11/07/2001 | EP1151646A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 10/31/2001 | EP1149930A1 Method and apparatus for regenerating a contaminated liquid metal bath |
| 10/31/2001 | DE10020284A1 Verfahren und Anordnung zum Regenerieren einer verunreinigten Metallschmelze Method and apparatus for regenerating a contaminated metal melt |
| 10/17/2001 | EP1144699A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 09/04/2001 | US6284190 Apparatus for recovering metal from dross |
| 08/01/2001 | EP1119646A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 08/01/2001 | EP1119645A1 Process and apparatus for recovering metal material from waste material |
| 07/11/2001 | EP1114873A1 Biological method of dezincifying galvanised scrap metal |
| 05/22/2001 | US6235208 Mixing with separation agent; removal floating solder oxide on melt |
| 04/10/2001 | US6214218 Soldering apparatus and agent for separating solder and solder oxides |
| 04/05/2001 | WO2001023627A1 Process to selectively recover metals from waste dusts, sludges and ores |
| 11/09/2000 | WO2000066796A1 Method for treating metal-containing waste by pyrometallurgy |
| 08/24/2000 | DE19859683C1 Verfahren zur Extraktion von Anionen A process for extraction of anions |
| 08/22/2000 | US6106587 Process for separating tin as well as, if required, copper from scrap melts, in particular, tinplate melts or metallic melts |
| 08/02/2000 | EP1024206A1 Apparatus and method for recovering metal from dross |
| 07/27/2000 | WO2000043574A1 Process for the recovery of tin, tin alloys or lead alloys from printed circuit boards |
| 07/20/2000 | WO2000042829A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 07/06/2000 | WO2000039350A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 07/06/2000 | CA2355853A1 Method of extracting anions of metals of groups ivb to viii by means of alkyl-substituted 1,3-diaminoprpopanes |
| 02/24/2000 | WO2000009771A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 02/24/2000 | WO2000009770A1 Process and apparatus for recovering metal material from waste material |
| 02/24/2000 | CA2339851A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 02/02/2000 | CN1049013C Solder recovery |
| 01/12/2000 | CN1048289C Method for integrated recovery of gold, silver, Pb and Sn as valuabele metals from chloride slag |
| 12/15/1999 | EP0963451A1 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 12/08/1999 | CN1237874A Soldering apparatus, and agent and method for separating solder and solder oxides |
| 11/30/1999 | US5993559 Forcing a tin removal fluid to flow in contact with a component part maintaining the component part in contact with the tin removal fluid at a temperature above 95.degree. c. and at a positive pressure between 3 bar and 6 bar in a closed |
| 09/07/1999 | US5948312 Skimmer system |
| 09/01/1999 | EP0938944A2 Soldering apparatus, and agent and method for separating solder and solder oxides |
| 06/16/1999 | CN1219979A Method for solubilizing metal values from Ta-Nb-ore materials containing insoluble fluorides |
| 06/09/1999 | EP0920947A2 Solder skimmer system |
| 05/11/1999 | US5902375 Method of melting tinned iron scrap |
| 03/11/1999 | DE19739157A1 Tin recovery from waste air containing tin tetrachloride |
| 01/19/1999 | US5861091 Process for electrochemically dissolving a metal such as zinc or tin |
| 11/18/1998 | EP0877830A1 Method for separating tin and if necessary copper from scrap melting, specially tinplate melting or metallic melting |
| 08/26/1998 | EP0859873A1 Process for removing tin |
| 07/28/1998 | US5785935 Using liquid leachant |
| 06/11/1998 | WO1998024939A1 Method and apparatus for separating solder |
| 06/09/1998 | US5762683 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 05/26/1998 | US5755889 For separating solder from dross |
| 04/28/1998 | US5744107 Process for removing heavy metals from soil |
| 03/19/1998 | WO1998011263A1 Method for separating tin and if necessary copper from scrap melting, specially tinplate melting or metallic melting |
| 01/13/1998 | US5707585 Liquid metal pump and apparatus for use in cleaning and recycling solder |
| 12/17/1997 | CN1167833A Integrated recovery of Pb and Sn as valuable metal from chloride slag |
| 11/27/1997 | WO1997044499A1 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 11/27/1997 | CA2252849A1 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 11/12/1997 | CN1164575A Chloride volatility process for tin ore |
| 10/29/1997 | EP0619764B1 Process for removing heavy metals from soils |
| 10/02/1997 | WO1997036014A1 METHOD FOR SOLUBILIZING METAL VALUES FROM Ta-Nb-ORE MATERIALS CONTAINING INSOLUBLE FLUORIDES |
| 09/04/1997 | WO1997032047A1 Hermetically closeable smelting/refining furnace |
| 09/03/1997 | EP0792939A1 Method of melting tinned iron scrap |
| 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 |
| 08/06/1997 | CN1156184A Method for separating stibium from stibilated coarse tin |
| 07/02/1997 | EP0781352A1 Solder recovery |
| 05/07/1997 | EP0771370A1 Process for electrochemically dissolving a metal such as zinc or tin |
| 04/24/1997 | WO1997014823A1 Process for removing tin |
| 04/17/1997 | DE19642732A1 Removing tin@ from the surface of directionally solidified castings |
| 04/03/1997 | WO1997012065A1 Method of melting tinned iron scrap |
| 02/26/1997 | CN1143980A Solder recovery |
| 12/04/1996 | EP0745439A2 Process for removing heavy metals from soil |
| 12/04/1996 | EP0745438A2 Process for removing heavy metals from soil |
| 05/03/1996 | CA2134941A1 Reclamation of metal plate |
| 04/09/1996 | US5505925 Process for removing heavy metals from soil |
| 02/27/1996 | US5494649 Leaching copper, lead and tin with methanesulfonic acid |
| 02/14/1996 | CN2219897Y 真空石墨炉 Vacuum furnace |
| 02/01/1996 | WO1996002689A1 Process for electrochemically dissolving a metal such as zinc or tin |
| 02/01/1996 | CA2195460A1 Process for electrochemically dissolving a metal such as zinc or tin |
| 09/28/1995 | WO1995025823A1 Solder recovery |
| 02/14/1995 | US5388756 Method and apparatus for removing contaminants from solder |
| 01/31/1995 | US5385598 Varying heating of upper and lower zones to obtain temperature gradients which cause migration of one metal to hotter zone, then cooling to cause formation of intermetallic which will rise or settle according to its density, then removal |
| 10/19/1994 | EP0619764A1 Process for removing heavy metals from soils. |
| 09/22/1993 | CN1076495A Melting bath smelting-continuous fusion process and equipment |
| 06/29/1993 | US5223087 Chemical solubilizing agent for tin or tin alloy |
| 05/27/1993 | WO1993006952A3 Process for removing heavy metals from soils |
| 04/15/1993 | WO1993006952A2 Process for removing heavy metals from soils |
| 04/15/1993 | CA2119021A1 Process for removing heavy metals from soil |
| 12/29/1992 | US5174975 Low temperature pyrolysis |
| 11/04/1992 | CN1018932B High-temp chlorination method for refractory mineral in tin ore |