This inventor holds 2 USPTO granted patents. Top assignee: Jeol Ltd.. Active years: 1991-2002.
Company Filing History:
Years Active: 1991-2002
Title: Tohru Kasai - Innovator in Electron Microscopy
Introduction
Tohru Kasai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electron microscopy, holding 2 patents that enhance the functionality and efficiency of specimen handling in this advanced technology.
Latest Patents
One of his latest patents is a vacuum sealed specimen holder support with motion damping means. This innovative device is designed for use with an electron microscope. It alleviates atmospheric pressure applied via a specimen holder to a holder inner end-positioning drive mechanism, which is crucial for accurately positioning the inner end of a specimen holder. The device includes a guide pin and comprises several components such as a holder mounting member, a slider, a slider-arresting member, and a spring. These elements work together to ensure precise movement and positioning of the specimen holder.
Another significant invention by Tohru Kasai is an electron microscope equipped with a specimen positioning device. This device allows for the movement of specimen holders within a plane that is perpendicular to the optical axis of the electron beam. It features a member that extends through the side wall of the yoke of the objective lens, a preliminary chamber connected via a valve, and an exchange mechanism. This setup enables the mounting and dismounting of specimen holders, facilitating the observation of multiple specimens successively once the inside of the lens is evacuated to a high vacuum.
Career Highlights
Tohru Kasai is currently employed at Jeol Ltd., a company renowned for its cutting-edge electron microscopy technology. His work has significantly advanced the capabilities of electron microscopes, making them more efficient and user-friendly.
Collaborations
Throughout his career, Tohru has collaborated with various professionals in the field, including his coworker Kimio Ohi. These collaborations have fostered innovation and the development of new technologies in electron microscopy.
Conclusion
Tohru Kasai's contributions to the field of electron microscopy through his patents and innovations have made a lasting impact. His work continues to influence the way specimens are handled and observed in scientific research.