Werner Sieber

Title: Werner Sieber: Innovator in Pigment Technology

Introduction

Werner Sieber is a notable inventor based in Fribourg, Switzerland. He has made significant contributions to the field of pigment technology, holding a total of 4 patents. His work focuses on the development of innovative pigment preparations and processes that enhance the quality and application of colorants.

Latest Patents

One of his latest patents is titled "Preparations of pteridine pigments." This invention relates to a pigment preparation that comprises, as component (A), 2,4,5,7-tetraminopyrimido[5,4g]pteridine of formula (1), as component (B), a phosphate compound, and optionally, as component (C), further additives. The patent also details a process for the production of these pigments and their use in coloring high molecular weight organic materials, as well as in the production of printing colorants, pastes, or inks. Another significant patent is "Process for preparing fine pigment dispersions," which further showcases his expertise in this specialized area.

Career Highlights

Throughout his career, Werner Sieber has worked with prominent companies in the chemical and diagnostics sectors. Notably, he has been associated with Ciba Specialty Chemicals Corporation and Chiron Diagnostics Corporation. His experience in these organizations has contributed to his innovative approach to pigment technology.

Collaborations

Werner has collaborated with various professionals in his field, including Veronique Hall-Goulle and Véronique Hall-Goulle. These collaborations have likely enriched his work and expanded the impact of his inventions.

Conclusion

In summary, Werner Sieber is a distinguished inventor whose work in pigment technology has led to several important patents. His contributions continue to influence the industry and enhance the applications of colorants in various materials.