Walter Schneider

Title: Walter Schneider: Innovator in Biochemical Processes

Introduction

Walter Schneider is a notable inventor based in Weilheim, Germany. He has made significant contributions to the field of biochemistry, particularly in the production of erythropoietin and the enzymatic determination of sulphite. With a total of 7 patents to his name, Schneider's work has had a lasting impact on medical and biochemical research.

Latest Patents

One of Schneider's latest patents is a process for producing erythropoietin that is free of foreign animal proteins, except for the proteins of the host cell. This innovative method involves expressing DNA coding for EPO in a eukaryotic host cell, which is then cultured in a medium devoid of natural mammalian proteins. The erythropoietin produced is purified through a series of chromatographic techniques, ensuring a high level of purity with less than 100 ppm of proteins derived from the host cell and less than 10 pg of host cell DNA per 83 µg of erythropoietin.

Another significant patent involves a process and reagent for the enzymatic determination of sulphite. In this invention, sulphite is oxidized in a buffered solution using sulphite oxidase to produce sulphate. The hydrogen peroxide formed is then reduced in the presence of NAD and NADH with the enzyme NADH peroxidase, allowing for optical determination of NADH consumption. The reagent developed for this process contains sulphite oxidase, NADH, NAD, NADH peroxidase, and buffer.

Career Highlights

Walter Schneider has worked with prominent companies in the biotechnology sector, including Boehringer Mannheim GmbH and Roche Diagnostics GmbH. His experience in these organizations has contributed to his expertise in biochemical processes and patent development.

Collaborations

Throughout his career, Schneider has collaborated with notable colleagues such as Albert Roder and Hans Mollering. These partnerships have likely enriched his research and innovation efforts.

Conclusion

Walter Schneider's contributions to the field of biochemistry through his patents and collaborations highlight his role as an influential inventor. His work continues to advance the understanding and application of biochemical processes in medicine and research.