Patents by Inventor Scot P. Sandoval
Scot P. Sandoval has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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System and method for producing copper power by electrowinning in a flow-through electrowinning cell
Patent number: 7736486Abstract: This invention relates to a system and method for producing a metal powder product using conventional electrowinning chemistry (i.e., oxygen evolution at an anode) in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes and/or direct electrowinning.Type: GrantFiled: May 23, 2008Date of Patent: June 15, 2010Assignee: Freeport-McMoran CorporationInventors: Antonioni C Stevens, Stanley R Gilbert, Scot P Sandoval, Timothy G Robinson, John O Marsden -
Patent number: 7736475Abstract: The present invention relates, generally, to a method for electrowinning copper powder, and more particularly to a method for electrowinning copper powder from a copper-containing solution using the ferrous/ferric anode reaction. In accordance with various embodiments of the present invention, a process for producing copper powder by electrowinning employs alternative anode reaction technology, namely, the ferrous/ferric anode reaction, and enables the efficient and cost-effective production of copper powder at a total cell voltage of less than about 1.5 V and at current densities of greater than 50 A/ft2. A copper powder electrowinning process in accordance with the present invention also reduces or eliminates acid mist generation that is characteristic of electrowinning operations utilizing conventional electrowinning chemistry (e.g., oxygen evolution at the anode), which is advantageous.Type: GrantFiled: December 11, 2008Date of Patent: June 15, 2010Assignee: Freeport-McMoran CorporationInventors: Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, John O Marsden, Stanley R Gilbert
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Patent number: 7736476Abstract: This invention relates to a system and method for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistries.Type: GrantFiled: November 4, 2008Date of Patent: June 15, 2010Assignee: Freeport-McMoran CorporationInventors: Stanley R Gilbert, Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, John O Marsden
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Publication number: 20090288856Abstract: Various embodiments provide an electrode comprising a conductive substrate, a first layer of a mixture comprising iridium oxide in a crystalline phase and tantalum oxide in an amorphous phase on a portion of an outer surface of the conductive substrate, and a second layer of the mixture comprising iridium oxide in an amorphous phase and tantalum oxide in an amorphous phase on an outer surface of the first layer.Type: ApplicationFiled: April 29, 2009Publication date: November 26, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Scot P. Sandoval, Michael D. Waite, Masatsugu Morimitsu, Casey J. Clayton
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Publication number: 20090288958Abstract: Accordingly, in various embodiments, the present invention provides methods for making electrochemically active materials. Methods include making an electrochemically active material by reacting a platinum group metal salt in a organic solvent to yield a mixture, then heating the mixture to create a metal-organic solvent complex and an acid, followed by removing at least a portion of the acid, and yielding an electrochemically active material comprising the metal-organic solvent complex. In an exemplary embodiment, the resulting electrochemically active material may be used for coating an electrode.Type: ApplicationFiled: April 29, 2009Publication date: November 26, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Scot P. Sandoval, Michael D. Waite, Casey J. Clayton
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Patent number: 7591934Abstract: This invention relates to an apparatus for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. A new design for a flow-through electrowinning cell that employs both flow-through anodes and flow-through cathodes is described. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistry.Type: GrantFiled: June 30, 2008Date of Patent: September 22, 2009Assignee: Freeport-McMoran CorporationInventors: John O Marsden, Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, Stanley R Gilbert
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Publication number: 20090152124Abstract: In various embodiments, the present invention provides an electrolytic cell contact bar having a first pole and a pair of second poles. The second poles are opposite in charge to the first pole and each of the pair of second poles are adjacent to and parallel to the first pole. In various embodiments, the contact bar may include an electrode holder capable of holding at least one electrode.Type: ApplicationFiled: November 6, 2008Publication date: June 18, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Brett Ashford, William A. Ebert, Fernando D. Mollo Vega, Samuel Rasmussen, Timothy G. Robinson, Scot P. Sandoval
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Publication number: 20090145749Abstract: The present invention relates, generally, to a method for electrowinning copper powder, and more particularly to a method for electrowinning copper powder from a copper-containing solution using the ferrous/ferric anode reaction. In accordance with various embodiments of the present invention, a process for producing copper powder by electrowinning employs alternative anode reaction technology, namely, the ferrous/ferric anode reaction, and enables the efficient and cost-effective production of copper powder at a total cell voltage of less than about 1.5 V and at current densities of greater than 50 A/ft2. A copper powder electrowinning process in accordance with the present invention also reduces or eliminates acid mist generation that is characteristic of electrowinning operations utilizing conventional electrowinning chemistry (e.g., oxygen evolution at the anode), which is advantageous.Type: ApplicationFiled: December 11, 2008Publication date: June 11, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Scot P. Sandoval, Antonioni C. Stevens, Timothy G. Robinson, John O. Marsden, Stanley R. Gilbert
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Publication number: 20090120789Abstract: This invention relates to a system and method for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistries.Type: ApplicationFiled: November 4, 2008Publication date: May 14, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Stanley R. Gilbert, Scot P. Sandoval, Antonioni C. Stevens, Timothy G. Robinson, John O. Marsden
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Patent number: 7494580Abstract: The present invention relates, generally, to a method for electrowinning copper powder, and more particularly to a method for electrowinning copper powder from a copper-containing solution using the ferrous/ferric anode reaction. In accordance with various embodiments of the present invention, a process for producing copper powder by electrowinning employs alternative anode reaction technology, namely, the ferrous/ferric anode reaction, and enables the efficient and cost-effective production of copper powder at a total cell voltage of less than about 1.5 V and at current densities of greater than 50 A/ft2. A copper powder electrowinning process in accordance with the present invention also reduces or eliminates acid mist generation that is characteristic of electrowinning operations utilizing conventional electrowinning chemistry (e.g., oxygen evolution at the anode), which is advantageous.Type: GrantFiled: July 14, 2005Date of Patent: February 24, 2009Assignee: Phelps Dodge CorporationInventors: Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, John O Marsden, Stanley R Gilbert
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Patent number: 7452455Abstract: This invention relates to a system and method for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistries.Type: GrantFiled: July 14, 2005Date of Patent: November 18, 2008Assignee: Phelps Dodge CorporationInventors: Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, John O Marsden, Stanley R Gilbert
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Publication number: 20080257712Abstract: This invention relates to an apparatus for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. A new design for a flow-through electrowinning cell that employs both flow-through anodes and flow-through cathodes is described. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistry.Type: ApplicationFiled: June 30, 2008Publication date: October 23, 2008Applicant: PHELPS DODGE CORPORATIONInventors: John O. Marsden, Scot P. Sandoval, Antonioni C. Stevens, Timothy G. Robinson, Stanley R. Gilbert
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SYSTEM AND METHOD FOR PRODUCING COPPER POWER BY ELECTROWINNING IN A FLOW-THROUGH ELECTROWINNING CELL
Publication number: 20080217185Abstract: This invention relates to a system and method for producing a metal powder product using conventional electrowinning chemistry (i.e., oxygen evolution at an anode) in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes and/or direct electrowinning.Type: ApplicationFiled: May 23, 2008Publication date: September 11, 2008Applicant: PHELPS DODGE CORPORATIONInventors: Antonioni C. Stevens, Stanley R. Gilbert, Scot P. Sandoval, Timothy G. Robinson, John O. Marsden -
Patent number: 7393438Abstract: This invention relates to an apparatus for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. A new design for a flow-through electrowinning cell that employs both flow-through anodes and flow-through cathodes is described. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistry.Type: GrantFiled: July 14, 2005Date of Patent: July 1, 2008Assignee: Phelps Dodge CorporationInventors: John O Marsden, Scot P Sandoval, Antonioni C Stevens, Timothy G Robinson, Stanley R Gilbert
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Patent number: 7378010Abstract: This invention relates to a system and method for producing a metal powder product using conventional electrowinning chemistry (i.e., oxygen evolution at an anode) in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes and/or direct electrowinning.Type: GrantFiled: July 14, 2005Date of Patent: May 27, 2008Assignee: Phelps Dodge CorporationInventors: Antonioni C Stevens, Stanley R Gilbert, Scot P Sandoval, Timothy G Robinson, John O Marsden
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Patent number: 7368049Abstract: The present invention relates, generally, to a method and apparatus for electrowinning metals, and more particularly to a method and apparatus for copper electrowinning using the ferrous/ferric anode reaction and a flow-through anode, such as, for example, a dimensionally stable carbon, carbon composite, metal-graphite, or stainless steel anode. In general, the use of a flow-through anode—coupled with an effective electrolyte circulation system—enables the efficient and cost-effective operation of a copper electrowinning system employing the ferrous/ferric anode reaction at a total cell voltage of less than about 1.5 V and at current densities of greater than about 26 Amps per square foot (about 280 A/m2), and reduces acid mist generation. Furthermore, the use of such a system permits the use of low ferrous iron concentrations and optimized electrolyte flow rates as compared to prior art systems while producing high quality, commercially saleable product (i.e.Type: GrantFiled: April 8, 2005Date of Patent: May 6, 2008Assignee: Phelps Dodge CorporationInventors: Scot P. Sandoval, Paul R. Cook, Wesley P. Hoffman, Timothy G. Robinson
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Patent number: 5492608Abstract: An improved electrolyte circulation manifold system for use in a copper electrowinning cell which includes an array of alternating cathode and anode plates positioned within a holding tank is disclosed. The manifold system itself includes a first manifold section positioned within the holding tank adjacent to a first lateral edge portion of each cathode plate and anode plate in the array. The first manifold section includes a first plurality of holes formed along it's length so that each hole is oriented in a horizontal plane and a single hole is positioned between and facing each anode plate and an adjacent cathode plate. A second manifold section is positioned within the holding tank adjacent to a second lateral edge portion of each cathode plate and anode plate in the array.Type: GrantFiled: March 14, 1994Date of Patent: February 20, 1996Assignee: The United States of America as represented by the Secretary of the InteriorInventors: Scot P. Sandoval, William J. Dolinar