Company Filing History:
Years Active: 1985-1989
Title: Innovator Spotlight: Darrell C. Feay
Introduction
Darrell C. Feay is a distinguished inventor based in Orinda, California, recognized for his contributions to the field of polymer membranes. With a total of four patents to his name, Feay's work primarily focuses on advanced gas separation technologies that have applications in various industries, including chemical manufacturing and environmental technology.
Latest Patents
One of Feay's latest patents is for "Tetrabromo bisphenol based polyestercarbonate membranes and method of." This invention involves a membrane featuring a dense skin of polyestercarbonate, where the diphenolic residue is a tetrabromo diphenolic residue. Remarkably, this membrane achieves a separation factor of 6.5 or greater for oxygen and nitrogen at around 24°C. The method described facilitates the separation of oxygen from a gas mixture of nitrogen and oxygen by utilizing this specialized membrane, showcasing unprecedented performance under various temperature and pressure conditions.
Another notable patent from Feay is focused on "Semi-permeable membranes consisting predominantly of polycarbonates." This invention details an improved gas separation membrane that includes a discriminating layer predominantly made from a carbonate polymer derived from a specific bisphenol. The gas separation membrane exhibits a separation factor for oxygen and nitrogen of at least 6.1 at 24°C, making it highly effective for processes aimed at separating oxygen from nitrogen-rich gases.
Career Highlights
Darrell C. Feay has spent a significant portion of his career at The Dow Chemical Company, where he has applied his expertise in polymer science and engineering to drive innovation and enhance product offerings. His groundbreaking work has positioned him as a prominent figure in the domain of gas separation technologies.
Collaborations
Throughout his career, Feay has collaborated with esteemed colleagues, including Joginder N. Anand and Stephen E. Bales. These partnerships have yielded fruitful results, further advancing the scope and impact of their research and inventions in membrane technology.
Conclusion
Darrell C. Feay's contributions to the field of innovations in polymer membranes signify crucial advancements in gas separation technologies. His latest patents reflect a commitment to developing high-performance materials that can operate efficiently under challenging conditions. As a valued member of The Dow Chemical Company, Feay continues to play an influential role in shaping the future of membrane technology.