This inventor holds 2 USPTO granted patents. Top assignees: Ciba-Geigy Corporation, Frenzelit-Werke Gmbh & Co.. Active years: 1983-1991.
Company Filing History:
2 out of 6,858 
1 out of 1 Years Active: 1983-1991
Title: Manfred Herrmann: Innovator in Dyeing Processes
Introduction
Manfred Herrmann is a notable inventor based in Steinbach, Germany. He has made significant contributions to the field of dyeing processes, particularly in relation to glass fibers and polyacrylonitrile materials. With a total of 2 patents, Herrmann's work has advanced the techniques used in textile and fiber dyeing.
Latest Patents
Herrmann's latest patents include innovative processes for dyeing or printing acid-treated glass fibers with anionic dyes. This process involves dyeing or printing fiber materials with anionic dyes in the presence of cationic compounds following an acid pretreatment. The cationic compounds can be applied to the fiber material before the dyeing or printing process or together with the dye from the same dyeing liquor or printing paste. Suitable cationic compounds include polyquaternized ammonium compounds, which yield level dyeings on glass fiber materials with excellent light fastness properties. Another significant patent describes a process for the level di- and trichromatic dyeing of polyacrylonitrile materials. This process utilizes an aqueous dyeing liquor containing at least two dye mixtures, resulting in dyeings characterized by high levelness and lightfastness.
Career Highlights
Throughout his career, Manfred Herrmann has worked with prominent companies such as Ciba-Geigy Corporation and Frenzelit-Werke GmbH & Co. His experience in these organizations has contributed to his expertise in dyeing technologies and processes.
Collaborations
Some of Herrmann's notable coworkers include Hans H. Bosshard and Rico Jenny. Their collaboration has likely fostered innovation and development in the field of dyeing processes.
Conclusion
Manfred Herrmann's contributions to dyeing technology have made a lasting impact on the industry. His innovative patents and collaborations reflect his dedication to advancing the science of dyeing and printing in textile applications.