Location History:
- Frankfurt-am-Main, DE (1982 - 1984)
- Hanau, DE (1989 - 1998)
- Gelnhausen, DE (1998 - 2002)
- Hanau Groβauheim, DE (2009)
- Hanau-Grossauheim, DE (2010)
Company Filing History:
9 out of 1,678 
2 out of 428 
1 out of 21 Years Active: 1982-2010
Title: The Innovative Contributions of Roger Wolmer
Introduction
Roger Wolmer is a distinguished inventor based in Gelnhausen, Germany. He has made significant contributions to the field of electrical contact materials, holding a total of 12 patents. His work focuses on the development of advanced materials that enhance the performance and reliability of electrical components.
Latest Patents
Among his latest patents is a groundbreaking invention titled "Silver/carbon-based material and method for producing the same for contact material." This invention outlines a process for producing a material based on silver-carbon. The process involves providing a suspension of carbon particles and supplying a solution of a silver compound along with a reducing agent. This results in a silver-containing precipitate being deposited onto the carbon particles, which have a mean diameter of 200 nm or greater. The material produced through this process is particularly useful in circuit breakers for low-voltage power engineering.
Another notable patent is the "Process for manufacture of silver-based composite powders for electrical contact materials and composite powders so produced." This invention describes a method for manufacturing silver-based composite powders intended for electrical contact materials. The process includes a high-energy dispersing method of wet silver oxide (AgO) with additional oxide components in aqueous suspension. The high-energy dispersing can be achieved through high shear mixing or high energy milling, utilizing high-speed dispersing units or attritor mills. This innovative process is versatile and economical, providing access to a wide range of contact materials with superior characteristics.
Career Highlights
Roger Wolmer has worked with prominent companies in the industry, including Degussa Aktiengesellschaft and Umicore Ag & Co. Kg. His experience in these organizations has contributed to his expertise in material science and engineering.
Collaborations
Throughout his career, Wolmer has collaborated with notable professionals such as Wolfgang Weise and Peter Braumann. These collaborations have further enriched his work and expanded the impact of his inventions.
Conclusion
Roger Wolmer's innovative contributions to the field of electrical contact materials demonstrate his commitment to advancing technology. His patents reflect a deep understanding of material science and a dedication to improving the performance of electrical components.