This inventor holds 4 USPTO granted patents. Top assignee: Ciba-Geigy Corporation. Active years: 1988-1993.
Company Filing History:
Years Active: 1988-1993
Title: The Innovative Contributions of Rudiger Oxenius
Introduction
Rudiger Oxenius is a notable inventor based in Rheinfelden, Germany. He has made significant contributions to the field of chemistry, particularly in the development of azo compounds and dyeing processes. With a total of 4 patents to his name, Oxenius has demonstrated a commitment to innovation and advancement in his field.
Latest Patents
Oxenius's latest patents include a process for the preparation of 1:2 metal complex azo compounds. This invention relates to a method for creating chromium, cobalt, nickel, or iron complex azo dyes through diazotization, coupling, and metallizing without isolating the coupling product. The process involves diazotizing at least one amine from the benzene or naphthalene series in an aqueous solution and coupling the resulting diazonium compound to a coupling component from the same series or a heterocyclic series. The azo dye produced contains groups suitable for metal complex formation, making it particularly effective for dyeing wool, synthetic textile polyamide fibers, and leather, as well as for use as wood mordant dyes.
Another significant patent by Oxenius details a process for the diazotization of primary aromatic amines that are sparingly soluble in water. This innovative method involves preparing a melt or solution of the amines and then precipitating them from the melt or solution in an organic solvent by adding water. The resultant suspension is then diazotized, resulting in considerably shorter reaction times compared to conventional processes.
Career Highlights
Oxenius has had a distinguished career, working with Ciba-Geigy Corporation, a leading company in the chemical industry. His work has focused on improving dyeing processes and developing new chemical compounds that enhance the efficiency and effectiveness of dye applications.
Collaborations
Throughout his career, Oxenius has collaborated with notable colleagues, including Ferenc Rakoczi and Charles Wilhelm. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.
Conclusion
Rudiger Oxenius's contributions to the field of chemistry, particularly in the area of azo compounds and dyeing processes, highlight his innovative spirit and dedication to advancing chemical technology. His patents reflect a deep understanding of chemical processes and a commitment to improving industrial applications.