This inventor holds 2 USPTO granted patents. Top assignee: Sandia Corporation. Active years: 2002-2004.
Company Filing History:
Years Active: 2002-2004
Title: Innovations by Willis E Stewart
Introduction
Willis E Stewart is an accomplished inventor based in W. Richland, WA (US). He has made significant contributions to the field of environmental remediation through his innovative inventions. With a total of 2 patents, Stewart has developed methods and apparatuses that enhance the construction of underground structures for environmental purposes.
Latest Patents
Stewart's latest patents include a "Method and apparatus for injecting particulate media into the ground" and a "Method and apparatus for constructing an underground barrier wall structure." The first patent describes an improved method for injecting particulate media into the ground to create underground permeable reactive barriers. This technology is crucial for the environmental remediation of contaminated soil and water. The media injector sub-assembly, which is attached to a triple wall drill string pipe, sprays a mixture of active particulate media and a mixing fluid. This design ensures a uniform and deep dispersion of the active media in the surrounding soil.
The second patent focuses on constructing an underground barrier wall structure using a jet grout injector subassembly. This invention addresses the challenges posed by the weak "bow-tie" shape formed during conventional jet injection. By incorporating secondary nozzles of smaller diameter, Stewart's method creates a barrier wall panel with a substantially uniform wall thickness and increased strength.
Career Highlights
Willis E Stewart is associated with Sandia Corporation, where he applies his expertise in environmental engineering and innovative design. His work has significantly impacted the field, providing solutions that enhance the effectiveness of underground construction methods.
Collaborations
Stewart has collaborated with notable colleagues, including Brian P Dwyer and Stephen F Dwyer. Their combined efforts contribute to advancing technologies in environmental remediation.
Conclusion
Willis E Stewart's innovative patents and contributions to environmental engineering demonstrate his commitment to improving methods for underground construction and remediation. His work continues to influence the industry positively.