Location History:
- Cologne-Klettenberg, DE (1976 - 1978)
- Cologne, DE (1976 - 1985)
- Hurth, DE (1988 - 1996)
Company Filing History:
Years Active: 1976-1996
Title: Inventor Hans-Werner Stephan: Pioneering Chemical Innovations
Introduction
Hans-Werner Stephan, an accomplished inventor based in Cologne, Germany, has made significant contributions to the field of chemistry with a remarkable portfolio of 15 patents. His innovative approaches and dedication to advancing chemical processes have established him as a prominent figure in the industry.
Latest Patents
Among Hans-Werner Stephan's latest inventions is a groundbreaking process to transport acetylene. This method involves using a pressurized, insulated tank where acetylene is dissolved in a solvent with a maximum acetylene-to-solvent mass ratio of 0.30. The solution is maintained at temperatures as low as -55 degrees Celsius, with the tank's surface covered by a multilayer configuration of floating materials.
Additionally, he has developed a process for making tertiary alkylphosphines characterized by the general formula R₃P. This involves reacting hydrogen phosphide (PH₃) with specific alkenes at elevated temperatures and pressures in the presence of a radical-yielding agent, such as 2,2'-azobis-(2-methylbutyronitrile), without the use of a solvent.
Career Highlights
Hans-Werner has worked with leading companies in the chemical industry, including Hoechst Aktiengesellschaft and Messer Griesheim GmbH. His expertise and innovative mindset have played a crucial role in his successful career as an inventor.
Collaborations
Throughout his career, Hans-Werner has collaborated with notable colleagues, including Gero Heymer and Klaus Jodden. These partnerships have fostered an environment of creativity and innovation, allowing for the development of novel chemical processes and technologies.
Conclusion
With 15 patents to his name and a strong foothold in the chemical sector, Hans-Werner Stephan continues to be a driving force in innovation. His contributions not only enhance industrial practices but also showcase the importance of research and development in advancing chemical sciences.