Yoshiro Yokoyama

Title: Yoshiro Yokoyama: Innovator in Protein Filtration and Purification

Introduction

Yoshiro Yokoyama is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of protein filtration and purification, holding a total of three patents. His innovative methods have advanced the efficiency and effectiveness of processing protein-containing liquids.

Latest Patents

Yokoyama's latest patents include a method for filtering protein-containing liquids and a method for purifying antibody proteins. The first patent describes a technique for filtering a protein-containing liquid with a concentration of 20 mg/mL to 100 mg/mL. This method involves a prefiltration step using a prefilter with a pore size of 0.08 µm to 0.25 µm, followed by a virus removal step utilizing a synthetic polymer membrane. The second patent focuses on purifying biologically active substances from solution mixtures containing impurities. This method employs an ion exchange chromatography carrier with a specific copolymer and operates at a uniform temperature to recover the desired biologically active substance.

Career Highlights

Yokoyama has worked with notable companies such as Asahi Kasei Medical Co., Ltd. and Asahi Kasei Chemicals Corporation. His experience in these organizations has allowed him to develop and refine his innovative techniques in protein processing.

Collaborations

Throughout his career, Yokoyama has collaborated with esteemed colleagues, including Naoyuki Shinohara and Takashi Ishihara. These partnerships have contributed to the advancement of his research and the successful implementation of his patented methods.

Conclusion

Yoshiro Yokoyama's contributions to the field of protein filtration and purification demonstrate his innovative spirit and dedication to advancing scientific knowledge. His patents reflect a commitment to improving processes that are vital in various biotechnological applications.