Location History:
- Irmo, SC (US) (2009)
- Blountville, TN (US) (2014 - 2016)
- Columbus, NE (US) (2005 - 2018)
- La Crosse, WI (US) (2015 - 2021)
Company Filing History:
12 out of 100 
11 out of 2,002 
2 out of 43 
Years Active: 2005-2025
Title: Discovering the Innovations of David Lange: A Pioneer in Carboxylic Acid Production
Introduction
David Lange, based in Blountville, TN, is an accomplished inventor known for his remarkable contributions to the field of chemical engineering. With a total of 12 patents to his name, Lange has been instrumental in developing innovative processes that enhance the production of crucial chemical compounds, particularly carboxylic acids.
Latest Patents
One of Lange's most significant patents involves an oxidation process that produces a crude carboxylic acid product. This innovative method entails oxidizing a feed stream containing at least one oxidizable compound resulting in a crude slurry rich in furan-2,5-dicarboxylic acid (FDCA) and its derivatives. Additionally, Lange has disclosed a process for refining this crude product into a dry purified carboxylic acid through various purification techniques.
Another of his notable patents outlines methods for producing terephthalic acid. This process involves combining para-xylene, a water-based solvent, and a saturated organic acid with an oxygen-containing gas. Conducted between 145°C and 175°C, this method utilizes a catalyst composition containing cobalt, manganese, zirconium, and bromine, which significantly enhances production efficiency.
Career Highlights
David Lange has amassed valuable experience throughout his career, having worked at prominent companies such as Eastman Chemical Company and Grupo Petrotemex S.A. De C.V. His work has not only contributed to the advancement of chemical production methods but has also been pivotal in shaping industry standards.
Collaborations
Lange has collaborated with talented professionals in his field, including Ashfaq Shahanawaz Shaikh and Mesfin Ejerssa Janka. Together, they have worked on various projects aimed at refining chemical processes and introducing innovative solutions.
Conclusion
With 12 patents, David Lange stands out as a notable inventor whose work continues to impact the chemical engineering landscape. His innovative approaches to the production of carboxylic acids not only advance technology but also highlight the importance of creativity and collaboration in the field of science and engineering.