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US2280477A
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Rotproofing of textiles, paper, and other fibrous materials
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US2131786A
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Roasting of ores, especially zinc sulphide ores containing lead and/or cadmium
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GB491501A
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Improvements in or relating to the rot-proofing of materials
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US2186750A
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Rotproofing and waterproofing of materials
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GB484576A
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Improvements in and relating to the rot-proofing of textiles, paper and other fibrous materials
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GB479842A
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Improvements in or relating to the preparation of magnesium
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GB471415A
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Improvements in or relating to the rot-proofing and water-proofing of materials
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GB448328A
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Improvements in the electrolytic production of lead
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GB443371A
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Improvements relating to the oxidation of solutions and suspensions
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GB433861A
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Improvements in methods for the removal of lead and/or cadmium from zinciferous materials
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GB425179A
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Improvements in and relating to the manufacture of sulphuric acid by the contact process
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ES122937A1
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Procedure for extracting metals from their raw minerals and other materials.
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GB349563A
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Process for extracting metals from ores, minerals and other materials
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GB338886A
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Improvements in or relating to the blast roasting or sintering of ores and metallurgical materials
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US1778872A
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Apparatus for the roasting or sintering of ores and the like
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DE492848C
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Circulating apparatus for roasting or sintering ores by blowing
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US1797931A
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Sintering machine
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DE516764C
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Process for the production of sulfuric acid u. like
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US1814515A
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Manufacture of materials of the nature of catalysts for the oxidation of oxidizable gases in admixture with air or oxygen
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GB321390A
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A process for the utilisation of sulphur bearing gases from ore roasting or sintering operations
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