This inventor holds 10 USPTO granted patents. Top assignee: The Dow Chemical Company. Active years: 1977-1988.
Location History:
- Angleton, TX (US) (1977 - 1982)
- La Grange, TX (US) (1988)
Company Filing History:
Years Active: 1977-1988
Title: The Innovative Contributions of David L. Childress
Introduction
David L. Childress is a prominent inventor based in Angleton, TX (US), known for his significant contributions to the field of chemical engineering. With a total of 10 patents to his name, Childress has made remarkable advancements in the development of catalysts and polymers.
Latest Patents
Among his latest patents, Childress has developed a method for supported fluorocarbonsulfonic acid polymers. This invention discloses improved heterogeneous acid catalysts and a method for preparing these catalysts. A heterogeneous acid catalyst has been prepared by coating a carrier with an aqueous emulsion containing a fluorocarbonsulfonic acid polymer in the sulfonyl fluoride form. The process involves removing the excess water, heating to a temperature above the softening point of the polymer for a specified time, and then converting the polymer to the active sulfonic acid form. The substrate used has pores of about 0.1 micrometers or greater and a surface area of about 20 m²/g or less. Additionally, he has patented a process for the preparation of ethylenimine, which involves a dehydration catalyst and a method for making an alkylenimine from an alkanolamine. This catalyst contains oxides of either tantalum or niobium, along with the oxides of iron and chromium, with specific ratios of the metals.
Career Highlights
David L. Childress has built a successful career at The Dow Chemical Company, where he has been instrumental in driving innovation and research in chemical processes. His work has not only contributed to the company's portfolio but has also advanced the industry as a whole.
Collaborations
Throughout his career, Childress has collaborated with notable colleagues, including William V. Hayes and Richard L. Poppe. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
David L. Childress exemplifies the spirit of innovation in the field of chemical engineering. His patents and contributions continue to influence the industry, showcasing the importance of research and development in creating effective solutions.