Company Filing History:
4 out of 38 
3 out of 283 
2 out of 580 
Years Active: 1976-1995
Title: Innovations of Wilhelm Heitmann
Introduction
Wilhelm Heitmann is a notable inventor based in Herne, Germany. He has made significant contributions to the field of chemical engineering, particularly in the recovery of ammonia and organic compounds from contaminated offgases. With a total of nine patents to his name, Heitmann's work has had a considerable impact on industrial processes.
Latest Patents
Heitmann's latest patents include a method for recovering ammonia and organic compounds from offgases contaminated with organic materials, carbon dioxide, and ammonia. This innovative method utilizes a combined absorption and rectification column, where carbon dioxide is washed out with aqueous alkali, and ammonia is drawn off as an overhead product. The organic compounds are then recovered in pure form from the bottoms product after the separation of alkali carbonate. Another significant patent involves a continuous multistage process for the preparation of (cyclo)aliphatic diisocyanates. This process includes several steps, such as condensing urea with a (cyclo)aliphatic diamine in the presence of an alcohol solvent, and reacting the crude (cyclo)alkylenebisurea with alcohol in a pressurized distillation reactor.
Career Highlights
Throughout his career, Wilhelm Heitmann has worked with prominent companies such as Veba-Chemie Aktiengesellschaft and Chemische Werke Huls Aktiengesellschaft. His experience in these organizations has allowed him to develop and refine his innovative processes, contributing to advancements in chemical manufacturing.
Collaborations
Heitmann has collaborated with notable professionals in his field, including August Sommer and Rainer Brucker. These partnerships have facilitated the exchange of ideas and expertise, further enhancing the quality of his inventions.
Conclusion
Wilhelm Heitmann's contributions to the field of chemical engineering through his patents and collaborations have established him as a significant figure in innovation. His work continues to influence industrial processes and improve the recovery of valuable compounds from contaminated sources.