Location History:
- Siegburg am Grafenkreuz, DE (1978)
- Sieburg, DE (1978 - 1984)
- Siegburg, DE (1976 - 1989)
Company Filing History:
12 out of 658 
1 out of 1 Years Active: 1976-1989
Title: The Innovative Mind of Franz Weissenfels
Introduction
Franz Weissenfels, a distinguished inventor based in Siegburg, Germany, has made significant contributions to the field of materials science through his innovative inventions. With a total of 12 patents to his name, Weissenfels has focused primarily on developing advanced phenolic resin foams that exhibit superior properties for various applications, particularly in the construction industry.
Latest Patents
Among his notable patents, the invention of "Phenolic resin foams of high filler content and their use as insulation" stands out. This invention details a method for creating hard foams using phenolic resins as binding agents, in which more than 90% of the filler consists of aluminum hydroxide. The foam's composition is remarkably fluid, allowing for the production of moldings in diverse geometries, with the foam exhibiting excellent insulating properties, high compressive strength, minimal shrinkage, and exceptional fire resistance. Another significant patent is the "Method for the preparation of highly absorbent phenolic resin foams," which enhances the production of open-pored phenolic resin foams. This inventive improvement involves using low-boiling organic liquids and specific additives to achieve foams with enhanced absorptive qualities.
Career Highlights
Franz Weissenfels has successfully held positions in reputable companies such as Dynamit Nobel Aktiengesellschaft and Isobloc GmbH. His work in these organizations has played a critical role in advancing the development of innovative materials that meet the evolving needs of the construction sector.
Collaborations
Throughout his career, Weissenfels has collaborated with notable coworkers, including Hans Junger and Klaus Bruning, which has fostered a creative environment leading to the development of various cutting-edge technologies and materials.
Conclusion
Franz Weissenfels is a prominent inventor whose work has had a profound impact on the field of materials science, specifically through his advancements in phenolic resin foams. Through his innovative patents and collaborations, he continues to contribute significantly to the construction industry, enhancing building materials with improved performance characteristics.