Company Filing History:
Years Active: 1977-1993
Title: Gerhard Rehfeld: Innovator in Abrasive Technologies
Introduction
Gerhard Rehfeld is a notable inventor based in Aachen, Germany. He has made significant contributions to the field of abrasive technologies, holding a total of 7 patents. His work focuses on the development of advanced materials that enhance the performance of industrial applications.
Latest Patents
One of his latest patents involves the creation of polycrystalline, sintered abrasive granules based on α-Al2O3. These granules exhibit a density greater than 98% of the theoretical density of corundum, a Vickers hardness of 21 GPa or greater, and a crystallite size ranging from 0.05 to 1.3 microns. The invention details a process for producing these abrasive granules, which includes adding α-Al2O3 crystal nuclei to a boehmite dispersion, acidifying and gelling the mixture, and subsequently drying, crushing, and sintering the gel. Another significant patent pertains to a superrefractory dry ramming material based on zirconium oxide, designed for lining induction-type crucible furnaces. This material is characterized by a low SiO2 content and includes finely divided monoclinic, fused zirconium oxide.
Career Highlights
Throughout his career, Gerhard Rehfeld has worked with prominent companies such as Dynamit Nobel Aktiengesellschaft and Hüls Aktiengesellschaft. His experience in these organizations has allowed him to refine his expertise in material science and abrasive technologies.
Collaborations
Gerhard has collaborated with notable professionals in his field, including Manfred Neidhardt and Gerd-Edzard Bockstiegel. These collaborations have contributed to the advancement of his innovative projects and patents.
Conclusion
Gerhard Rehfeld's contributions to abrasive technologies and material science are significant, as evidenced by his numerous patents and collaborations. His work continues to influence the industry and pave the way for future innovations.