Company Filing History:
2 out of 2,546 
3 out of 832,912 Years Active: 1976-1995
Title: Emmett W Chappelle: Innovator in Environmental Detection Technologies
Introduction
Emmett W Chappelle is a distinguished inventor based in Baltimore, MD (US). He has made significant contributions to the field of environmental detection technologies, holding a total of 5 patents. His innovative methods have advanced the way we detect and measure various environmental factors, particularly in agriculture and water quality.
Latest Patents
Chappelle's latest patents include a method for determining surface coverage by materials exhibiting fluorescence. This improved method allows for the detection, measurement, and distinction of crop residue, live vegetation, and mineral soil. By measuring fluorescence in multiple bands, he has developed a technique to differentiate between live and dead vegetation. The process involves illuminating the ground with ultraviolet radiation, which induces fluorescence in specific molecules. The emitted fluorescent light is then measured using a fluorescence detector, enabling the calculation of the proportion of the sampled area covered by residue or vegetation.
Another notable patent is his rapid, quantitative determination of bacteria in water. This bioluminescent assay for ATP in waterborne bacteria involves adding nitric acid to a water sample containing concentrated bacteria to rupture the bacterial cells. The sample is then diluted and mixed with a luciferase-luciferin mixture, allowing for the measurement of light output from the bioluminescent reaction. This light output is correlated with the presence of bacteria in the sample, providing a reliable method for water quality assessment.
Career Highlights
Throughout his career, Chappelle has worked with various organizations, including the United States of America as represented by the Administrator. His innovative work has garnered attention and respect in the scientific community, contributing to advancements in environmental monitoring.
Collaborations
Chappelle has collaborated with notable individuals such as Grace L Picciolo and Jody W Deming. These partnerships have further enhanced his research and development efforts in the field of environmental detection technologies.
Conclusion
Emmett W Chappelle's contributions to environmental detection technologies through his innovative patents have significantly impacted the fields of agriculture and water quality. His work continues to inspire future advancements in these critical areas.