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US Patent 7396461 Filter Cartridge for Gravity-fed Water Treatment Devices US Patent 7585409 Multi Stage Water Purification Device US Patent 7507338 Universal Water Purifier Unit Assembly Device Indian Patent 199055 Sediment Filter With Varying Porosity EPC GAC Brochure Enhanced Physisorption & Chemisorption GAC for Air purification EPC Carbon Block Brochure Enhanced Physisorption & Chemisorption Standard 10 inches Block dataSe Published June 2008 WC&P Magazine Surface Modification of Activated Carbon for Removal of Water Impurities Published March 2008 WC&P Magazine Coconut Shell Based Activated Carbon with No Green House Gas Emission |
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