Company Filing History:
2 out of 50 
1 out of 11 
1 out of 19 Years Active: 1993-2003
Title: Innovations of Josef Schaller
Introduction
Josef Schaller is a notable inventor based in Linz, Austria. He has made significant contributions to the field of chemistry, particularly in the purification of ketones and the preparation of amino acids. With a total of five patents to his name, Schaller's work reflects a commitment to advancing chemical processes.
Latest Patents
One of Schaller's latest patents is a process for the purification of ketones obtained from the corresponding terpenes by ozonolysis and reduction. This improved and safe process involves converting the resulting crude ketone into a high-purity ketone through steam distillation at atmospheric or reduced pressure, followed by extraction and subsequent distillation. Another significant patent is for an improved process for preparing L-aspartic acid. This process utilizes an enzyme-catalyzed reaction of fumaric acid with ammonia, where L-aspartic acid is precipitated out using nitric acid, and the resultant mother liquor undergoes nanofiltration.
Career Highlights
Throughout his career, Schaller has worked with prominent companies such as DSM Fine Chemicals Austria Nfg GmbH & Co. KG and DSM Fine Chemicals Austria GmbH. His experience in these organizations has allowed him to refine his skills and contribute to innovative chemical processes.
Collaborations
Schaller has collaborated with notable colleagues, including Klaus Reiter and Karl-Heinz Giselbrecht. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Josef Schaller's contributions to the field of chemistry through his patents and collaborations highlight his role as a significant inventor. His work continues to influence advancements in chemical processes and applications.