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MacDonald; John Alexander
Calgary, CA
No. of patents:

Patent Number Title Of Patent Date Issued
7918994 System that removes contaminants from sulfur April 5, 2011
A system for removing contaminant from sulfur to a level that allows re-processed sulfur to reenter a supply chain. The system melts contaminated sulfur, filters the molten sulfur, and then dispenses the less contaminated sulfur after filtering it. More specifically, solid contaminat

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