IC 011. US 013 021 023 031 034. G & S: Equipment for treating water, wastewater, and organic wastes such as agricultural or food processing wastes or waste sludge from industrial or municipal water or wastewater treatment plants, namely, tanks, covers, mixers, pumps, blowers, service boxes, screens, filters, chemical systems, heating equipment, gas handling equipment, sludge thickening, de-watering and drying equipment, control and monitoring equipment, that include water and wastewater treatment systems, apparatus for anaerobic digestion, membrane filtration equipment, physical and chemical water treatment equipment, sludge handling and processing equipment, equipment for producing, storing and processing bio-gas, and equipment for making fertilizer and fertilizer products

IC 037. US 100 103 106. G & S: Construction of waste, water and wastewater treatment facilities with water, wastewater and waste treatment systems, anaerobic digestion systems, water filtration systems, bio-gas production systems, and systems for storing, processing, and producing fertilizers

IC 042. US 100 101. G & S: Design and development of water and wastewater treatment systems, namely, water, wastewater and waste treatment equipments, anaerobic digestion systems, water filtration units, bio-gas production units, and systems for storing, processing, and producing fertilizers; engineering services in the field of water, wastewater and waste treatment, anaerobic digestion systems, water filtration, bio-gas production, storing and processing, fertilizer production