Company Filing History:
Years Active: 1991-1992
Title: Innovations by Clarence E Leisey, III
Introduction
Clarence E Leisey, III is an accomplished inventor based in Apollo Beach, Florida. He has made significant contributions to the field of environmental engineering, particularly in the area of waste management. With a total of 2 patents, his work focuses on the immobilization of toxic elements found in incinerator ash.
Latest Patents
Leisey's latest patents revolve around a composition suitable for use as a base in the construction of roads, parking lots, and other areas. This innovative formulation is created from an ash aggregate comprising municipal solid waste incinerator ash (MSWIA) mixed with an aggregate material. Upon the addition of cement, compaction, and curing, a volumetrically stable solid is formed. The process involves combining the incinerator ash with an aggregate material, which is then crushed and sifted to remove larger particles. The moisture content of the mixtures is carefully adjusted to achieve maximum compressive strength. When ash aggregates containing less than 50 percent MSWIA are combined with at least 5 percent cement by dry weight, stable solids are formed within seven days, exhibiting compressive strengths exceeding 300 psi. These stable solids effectively immobilize heavy metals in the MSWIA, ensuring that leachates from EPA toxicity tests remain below the maximum allowable concentrations for non-hazardous materials.
Career Highlights
Leisey has been instrumental in advancing environmentally friendly construction materials through his innovative patents. His work not only addresses waste management issues but also contributes to sustainable construction practices. He is associated with Permabase, Inc., where he continues to develop solutions that benefit both the environment and the construction industry.
Collaborations
Throughout his career, Leisey has collaborated with notable colleagues, including William W Casey and Eric W Shafer. These partnerships have further enhanced his research and development efforts in the field of environmental engineering.
Conclusion
Clarence E Leisey, III is a notable inventor whose work in immobilizing toxic elements in incinerator ash has significant implications for environmental sustainability. His innovative approaches contribute to safer construction practices and effective waste management solutions.