Location History:
- Kerkrade, NL (1976 - 1980)
- Heerlen, NL (1989 - 1991)
Company Filing History:
Years Active: 1976-1991
Title: Innovations of Bernardus H Dassen
Introduction
Bernardus H Dassen is a notable inventor based in Heerlen, Netherlands. He has made significant contributions to the field of chemistry, particularly in the area of amino acid amides. With a total of six patents to his name, Dassen's work has advanced the understanding and application of racemization processes.
Latest Patents
One of Dassen's latest patents involves a process for racemizing an optically active N-benzylidene amino-acid amide. This innovative process is characterized by mixing a solution of the N-benzylidene amino-acid amide in a water-miscible organic solvent with at least 0.05 mole of a strong base per liter of solution. The invention also details a method for preparing an L-amino acid through enzymatic separation of the corresponding DL-amino-acid amide using an enzyme preparation from Pseudomonas putida. This process allows for the unconverted D-amino-acid amide to remain in solution, and involves the addition of benzaldehyde, leading to the formation of a precipitate of D-N-benzylidene amino-acid amide. The precipitate is then processed further to yield the desired amino acid amide.
Career Highlights
Dassen is currently associated with Stamicarbon B.V., a company known for its innovative solutions in the field of fertilizer technology. His work at Stamicarbon has allowed him to apply his expertise in chemical processes to real-world applications, contributing to advancements in the industry.
Collaborations
Throughout his career, Dassen has collaborated with notable colleagues such as Wilhelmus H Boesten and Hans E Schoemaker. These collaborations have fostered a productive environment for innovation and development in their respective fields.
Conclusion
Bernardus H Dassen's contributions to the field of chemistry, particularly through his patents and collaborations, highlight his role as a significant inventor. His innovative processes continue to influence the industry and pave the way for future advancements.