DAVID L HANSEN
Engineering in West Sand Lake, NY

5072833, Dec 17, 1991

May 10, 1989

7/350085

David Hansen - West Sand Lake NY
Patrick F. Mahoney - Rensselear NY

EAC Systems, Inc. - Albany NY

B07C 502, B30B 1300, B65D 3004

209 33

The present invention concerns a method of collecting recyclable materials and separating recyclable materials from household and commercial refuse for recycling at a recyclable material recovery facility. The method comprises placing recyclable material into a flexible receptacle or container having a rugged construction sufficient to withstand forces experienced under compaction, transfer and dumping, during curbside pick-up, delivery along with mixed solid waste to a delivery point and transferral to a picking station of a solid waste facility. Each flexible receptacle has a predetermined color rendering the flexible receptacle highly visible against and distinguishable from other solid waste. The flexible receptacle is delivered to the delivery point for transferral to a picking station solid waste facility, for the purpose of recycling the recyclable material placed therein. The flexible receptacle is then transferred from the delivery point to the picking station and is then transferred to a material recovery facility, where it is thereafter opened, materials recovered, processed and recycled.

5251761, Oct 12, 1993

Dec 10, 1991

7/805305

David Hansen - West Sand Lake NY
Patrick F. Mahoney - Rensselear NY

EAC Systems, Inc. - Albany NY

B07C 502

209 33

A method of handling recyclable materials through the use of distinctive, and relatively rugged plastic bags is provided. Such bags are furnished to one or more communities as part of a recycling program. The bags preferably include source identification codes particular to each community. The bags are filled with recyclable materials, closed, and left at curb side or other location for pick up by collection equipment. The bags, which may be comingled with other, non-recyclable waste materials, are gathered and compacted in order to reduce the volume thereof. The rugged construction of the bags ensures that a relatively high percentage survive the compaction process without spilling the materials contained therein. Bags are then transported to a delivery point where they are separated from other comingled waste materials. Bags may then be emptied and the materials contained therein recycled.

4917733, Apr 17, 1990

Nov 14, 1988

7/272134

David L. Hansen - West Sand Lake NY

C05F 300

106 85

A pozzolanic mixture for stabilizing landfill leachate which includes fly ash with an excess of lime, kiln dust, and optionally bottom ash, which is combined with the landfill leachate with a makeup quantity of water to produce a stable cementitious pozzolanic mixture that hardens to a mortar-like material. The hardened material exhibits favorable handling characteristics, and resists leaching of its environmentally hazardous components.