Location History:
- 79108 Freiberg, DE (1998)
- Freiberg, DE (2000)
Company Filing History:
1 out of 62 
1 out of 9 
1 out of 832,843 Years Active: 1998-2000
Title: Rudolf Wiechmann: Innovator in Copper Technology
Introduction
Rudolf Wiechmann is a notable inventor based in Freiberg, Germany. He has made significant contributions to the field of materials science, particularly in the development of advanced copper products. With a total of 3 patents to his name, Wiechmann's work focuses on enhancing the properties of copper materials for various applications.
Latest Patents
One of Wiechmann's latest patents is for a high fatigue ductility electrodeposited copper foil. This invention relates to an annealable electrodeposited copper foil characterized by a substantially uniform unoriented grain structure that is essentially columnar grain free. The foil exhibits a fatigue ductility of at least about 25% after being annealed at 177°C for 15 minutes, with one embodiment achieving a fatigue ductility of at least about 65%. The invention also includes a process for making this copper foil using an electrolyte solution with a critical concentration of chloride ions of up to about 5 ppm and organic additives of up to about 0.2 ppm.
Another significant patent by Wiechmann involves the development of copper wire. This invention pertains to copper wire that also has a substantially uniform unoriented grain structure that is essentially columnar grain free. The process for making this copper wire includes cutting copper foil to form strands, which are characterized by a fatigue ductility of at least about 25% after annealing. The method involves flowing an aqueous electrolyte solution between an anode and a cathode to deposit copper foil, followed by cutting and shaping the strands to achieve the desired cross-sectional shape and size.
Career Highlights
Throughout his career, Rudolf Wiechmann has worked with various companies, including Gould Electronics Inc. His experience in the industry has allowed him to refine his expertise in materials science and contribute to innovative solutions in copper technology.
Collaborations
Wiechmann has collaborated with notable professionals in his field, including Sidney J. Clouser and Bernd Schneider. These collaborations have further enriched his work and expanded the impact of his inventions.
Conclusion
Rudolf Wiechmann's contributions to the field of copper technology through his innovative patents demonstrate his commitment to advancing materials science. His work continues to influence the industry and pave the way for future developments in copper applications.