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5620834 Method of processing photographic silver halide materials
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Patents Alerr
aqueous phase from said second organic phase; and (6) removing said cyclohexane and said isopropyl acetate from said second organic phase, thereby forming a pure resist component solution.
5620585 INORGANIC PERBROMIDE COMPOSITIONS AND METHODS OF USE THEREOF Dadgar Ahmad; Howarth Jonathan N; Sergent Rodney; Favstritsky Nicolai A; McKeown Julie A; Borden Dennis W; Sanders Brent M; Likens Jane West Lafayette, IN, UNITED STATES assigned to Great Lakes Chemical Corporation A process for leaching gold, silver, platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching gold, and palladium. A silver, platinum process for electrogenerating bromine and a process for leaching gold, silver, and palladium wherein platinum bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.
completely dissolved and the gold mud is removed without handling of any partially dissolved anodes. The cell is conventional except that the anodes are placed in a basket made of a thermoplastic material and surrounded by a cloth, the electrical contact between the anode and the power source takes place outside the electrolyte. The bottom of the basket is provided with apertures allowing the gold mud produced to tall into the cloth until the anode is completely dissolved.
5620834 METHOD OF PROCESSING PHOTOGRAPHIC SILVER HALIDE MATERIALS Green Jeffrey K Harrow, UNITED KINGDOM assigned to Eastman Kodak Company silver halide Black-and-white photographic materials are processed with the use of a processor which requires no silver recovery means, no water supply and no drain. The photographic material is transported through a series of processing tanks including a developer tank, one or more fixer tanks, and one or more wash or stabilizer tanks. Replenishment of the fixing solution is controlled so that the rate of replenishment of the fixer tank is a function of the level of one or more chemicals in the last tank through which the material is transported.
5622615 5620586 PROCESS FOR ELECTROWINNING OF COPPER MATTE
SILVER ELECTROLYSIS METHOD IN MOEBIUS CELLS Claessens Pierre; Cromwell John L CANADA assigned Eustache, Noranda Inc
St to
The present invention is concerned with a method for electrorefining silver in a Moebius cell whereby the anode is
Young Sharon; Dreisinger David; Ji Jinxing Tucson, AZ, UNITED STATES assigned to The University of British Columbia A sulfur dioxide free process for the production of high purity metallic
Patents Alerr
aqueous phase from said second organic phase; and (6) removing said cyclohexane and said isopropyl acetate from said second organic phase, thereby forming a pure resist component solution.
5620585 INORGANIC PERBROMIDE COMPOSITIONS AND METHODS OF USE THEREOF Dadgar Ahmad; Howarth Jonathan N; Sergent Rodney; Favstritsky Nicolai A; McKeown Julie A; Borden Dennis W; Sanders Brent M; Likens Jane West Lafayette, IN, UNITED STATES assigned to Great Lakes Chemical Corporation A process for leaching gold, silver, platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching gold, and palladium. A silver, platinum process for electrogenerating bromine and a process for leaching gold, silver, and palladium wherein platinum bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.
completely dissolved and the gold mud is removed without handling of any partially dissolved anodes. The cell is conventional except that the anodes are placed in a basket made of a thermoplastic material and surrounded by a cloth, the electrical contact between the anode and the power source takes place outside the electrolyte. The bottom of the basket is provided with apertures allowing the gold mud produced to tall into the cloth until the anode is completely dissolved.
5620834 METHOD OF PROCESSING PHOTOGRAPHIC SILVER HALIDE MATERIALS Green Jeffrey K Harrow, UNITED KINGDOM assigned to Eastman Kodak Company silver halide Black-and-white photographic materials are processed with the use of a processor which requires no silver recovery means, no water supply and no drain. The photographic material is transported through a series of processing tanks including a developer tank, one or more fixer tanks, and one or more wash or stabilizer tanks. Replenishment of the fixing solution is controlled so that the rate of replenishment of the fixer tank is a function of the level of one or more chemicals in the last tank through which the material is transported.
5622615 5620586 PROCESS FOR ELECTROWINNING OF COPPER MATTE
SILVER ELECTROLYSIS METHOD IN MOEBIUS CELLS Claessens Pierre; Cromwell John L CANADA assigned Eustache, Noranda Inc
St to
The present invention is concerned with a method for electrorefining silver in a Moebius cell whereby the anode is
Young Sharon; Dreisinger David; Ji Jinxing Tucson, AZ, UNITED STATES assigned to The University of British Columbia A sulfur dioxide free process for the production of high purity metallic