Hendrik Kathrein

Title: Hendrik Kathrein: Innovator in Iron Oxide Pigments

Introduction

Hendrik Kathrein is a notable inventor based in Juchen-Aldenhoven, Germany. He has made significant contributions to the field of materials science, particularly in the development of iron oxide pigments. With a total of 3 patents to his name, his work has had a considerable impact on various applications.

Latest Patents

Among his latest patents, Kathrein has developed low coercive iron oxide pigments and a process for their preparation. This innovation involves cobalt-coated, needle-shaped berthollide iron oxide pigments, which feature a core composition of (Fe.sub.x.sup.2+, Fe.sub.2.sup.3+)O.sub.3+x, where 0.3<x<0.75. The preparation process includes coating the core with berthollide and a soluble zinc compound, followed by a cobalt compound. Another significant patent focuses on magnetic iron oxide pigments, which are useful in magnetic signal recordings. These pigments exhibit a coercivity dependence on temperature ranging from 76K to 298K of less than 0.13 kA/mK, and a coercivity on powder compressed to 0.9 g/cm.sup.3 of greater than 51 kA/m. This is achieved by coating a magnetic iron oxide core material with a compound containing divalent and trivalent iron.

Career Highlights

Hendrik Kathrein has worked with prominent companies such as Bayer Aktiengesellschaft and Bayer Aktiengesellschaft. His experience in these organizations has contributed to his expertise in the field of pigment technology.

Collaborations

Throughout his career, Kathrein has collaborated with notable individuals, including Fritz Rodi and Peter Kiemle. These partnerships have likely enriched his research and development efforts.

Conclusion

Hendrik Kathrein's innovative work in iron oxide pigments showcases his expertise and dedication to advancing materials science. His patents reflect a commitment to developing new technologies that have practical applications in various industries.