Kihachiro Ohkura

Title: Kihachiro Ohkura: Innovator in Liquid Chromatography

Introduction

Kihachiro Ohkura is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of liquid chromatography, holding a total of 2 patents. His work focuses on enhancing the efficiency and accuracy of chromatographic processes.

Latest Patents

Ohkura's latest patents include a liquid chromatograph control apparatus and a method for performing liquid chromatography. The liquid chromatograph control apparatus features a measured value storage that retains the measured retardation factor (Rf) value of a sample. This value is obtained when the components of the sample are separated using an eluent containing multiple ingredients at a specified mixture ratio. The apparatus also includes a rate-of-change-in-Rf-value storage that tracks the rate of change in the Rf value concerning variations in the mixture ratio of the eluent. Additionally, a mixture ratio calculator determines the optimal mixture ratio of the eluent to achieve a specified Rf value, while a mixture ratio controller outputs control signals to adjust the eluent mixture accordingly.

Another significant invention is an injection apparatus that utilizes multiple switching valves to efficiently deliver sample liquids from various injectors into selected columns. This design allows for the sequential analysis of sample liquids, enhancing the overall efficiency of chromatographic analysis.

Career Highlights

Kihachiro Ohkura is currently associated with Yamazen Corporation, where he continues to innovate in the field of chromatography. His work has been instrumental in advancing the technology used in liquid chromatography, making it more effective for various applications.

Collaborations

Ohkura has collaborated with notable colleagues such as Shigeo Mukai and Kunihiko Fujii. Their combined expertise has contributed to the development of advanced chromatographic technologies.

Conclusion

Kihachiro Ohkura's contributions to liquid chromatography through his patents and collaborative efforts have significantly impacted the field. His innovative approaches continue to enhance the efficiency and effectiveness of chromatographic processes.