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Class Information
Number: 75/721
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > Below 300 degrees c > Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) > Utilizing organic reducing agent
Description: Process wherein an organic compound is used as a reducing agent for producing free metal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8419822 |
Methods for producing carboxylic acid stabilized silver nanoparticles |
Apr. 16, 2013 |
| 8328900 |
Processes for recovering metals from aqueous solutions |
Dec. 11, 2012 |
| 8287771 |
Method for producing silver particle powder |
Oct. 16, 2012 |
| 8277538 |
Method of leaching copper sulfide ore |
Oct. 2, 2012 |
| 8167974 |
Terephthalic acid purge filtration rate by controlling % water in filter feed slurry |
May. 1, 2012 |
| 8070850 |
Process for liberating metals using direct production of leach grade acid solutions |
Dec. 6, 2011 |
| 8029598 |
Method for recovering metal values from refractory sulfide ore |
Oct. 4, 2011 |
| 7857888 |
Method for separation and recovery of noble metals |
Dec. 28, 2010 |
| 7842274 |
Process for manufacture of silver-based particles and electrical contact materials |
Nov. 30, 2010 |
| 7794677 |
Reduction of copper content in the molybdenite concentrate |
Sep. 14, 2010 |
| 7776442 |
Particulate powder of silver and method of manufacturing same |
Aug. 17, 2010 |
| 7763096 |
Recovery of rhenium |
Jul. 27, 2010 |
| 7641714 |
Method for recovering metal values from refractory sulfide ore |
Jan. 5, 2010 |
| 7628840 |
Metal nano-particles and method for preparing the same, dispersion of metal nano-particles and method for preparing the same, and thin metallic wire and metal film and method for preparing the |
Dec. 8, 2009 |
| 7582136 |
Recovery of gold from potassium iodide-iodine etching solution |
Sep. 1, 2009 |
| 7563304 |
Heap bioleaching process |
Jul. 21, 2009 |
| 7455716 |
High temperature heap bioleaching process |
Nov. 25, 2008 |
| 7429286 |
Method for recovering metal values from concentrates of sulfide minerals |
Sep. 30, 2008 |
| 7214256 |
Solvent extraction process |
May. 8, 2007 |
| 7214644 |
Cross-coupling reactions |
May. 8, 2007 |
| 7160354 |
High temperature heap bioleaching process |
Jan. 9, 2007 |
| 6977050 |
Synthesis of lignosulfonic acid-doped polyaniline using transition metal ion catalysts |
Dec. 20, 2005 |
| 6706795 |
Methods for the preparation of nanosized material particles |
Mar. 16, 2004 |
| 6599414 |
Solvent extraction processes for metal recovery |
Jul. 29, 2003 |
| 6596053 |
Processes for the recovery of copper from aqueous solutions containing nitrate ions |
Jul. 22, 2003 |
| 6582494 |
Recovery of nickel and copper from sulphide concentrates by bioleaching |
Jun. 24, 2003 |
| 6468327 |
Process for processing residual substances containing at least one nonferrous metal and/or compounds thereof |
Oct. 22, 2002 |
| 6462095 |
Polymer-stabilized metal colloid solutions, method for producing said solutions and use of the same as catalysts for fuel cell |
Oct. 8, 2002 |
| 6432167 |
Processes for the recovery of copper from aqueous solutions containing nitrate ions |
Aug. 13, 2002 |
| 6416590 |
Solder powder and method for preparing the same and solder paste |
Jul. 9, 2002 |
| 6383254 |
Treatment solution and treatment method for reducing copper oxides |
May. 7, 2002 |
| 6290749 |
Preparation of ultra-pure silver metal |
Sep. 18, 2001 |
| 6241807 |
System for recovery of metals from solutions thereof |
Jun. 5, 2001 |
| 6162278 |
Photobiomolecular deposition of metallic particles and films |
Dec. 19, 2000 |
| 6106589 |
Method for treating noble metal complex ions |
Aug. 22, 2000 |
| 5925166 |
Process for obtaining iron or iron-based powders by organic liquid phase precipitation |
Jul. 20, 1999 |
| 5769925 |
Process for the elution of precious metals absorbed on active carbon |
Jun. 23, 1998 |
| 5759410 |
Process for recovering mercapto-s-triazines from silver precipitate |
Jun. 2, 1998 |
| 5484470 |
Enhancement of gold lixiviation using nitrogen and sulfur heterocyclic aromatic compounds |
Jan. 16, 1996 |
| 5474593 |
Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution |
Dec. 12, 1995 |
| 5458787 |
Extraction of certain metal cations from aqueous solutions |
Oct. 17, 1995 |
| 5411573 |
Recovery of precious metals from acid solutions by N-containing electroactive polymers |
May. 2, 1995 |
| 5389122 |
Process for making finely divided, dense packing, spherical shaped silver particles |
Feb. 14, 1995 |
| 5368632 |
Redox polymer films for metal recovery applications |
Nov. 29, 1994 |
| 5358546 |
Highly reactive forms of zinc and reagents thereof |
Oct. 25, 1994 |
| 5283192 |
Biological process for enhanced manganese and silver recovery from refractory manganiferous silver ore |
Feb. 1, 1994 |
| 5263044 |
Remelting method for recognition and recovery of noble metals and rare metals |
Nov. 16, 1993 |
| 5228903 |
Method for stripping metals in solvent extraction |
Jul. 20, 1993 |
| 5122279 |
Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
Jun. 16, 1992 |
| 5006262 |
Process for recovering copper from copper ion containing aqueous solutions |
Apr. 9, 1991 |
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