Location History:
- Hitachi, JA (1976)
- Hitachi, JP (1980)
Company Filing History:
Years Active: 1976-1980
Title: Koichi Wajima: Innovator in Semiconductor Technology
Introduction
Koichi Wajima is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work has been instrumental in advancing the capabilities of semiconductor devices.
Latest Patents
Wajima's latest patents include a semiconductor controlled rectifier designed to eliminate certain inefficiencies. This device comprises a semiconductor substrate with four layers of alternating n- and p-type conductivities. It features a gate electrode of rectangular shape and a cathode electrode that extends along the sides of the gate, ensuring optimal performance. Another notable patent is the diode-integrated thyristor, which combines the functions of a thyristor and a diode within the same semiconductor substrate. This innovative design allows for opposite rectifying directions, enhancing the efficiency of the device.
Career Highlights
Wajima has had a distinguished career at Hitachi, Ltd., where he has been involved in groundbreaking research and development in semiconductor technology. His expertise has led to advancements that have had a lasting impact on the industry.
Collaborations
Throughout his career, Wajima has collaborated with notable colleagues, including Tsutomu Yatsuo and Tatsuya Kamei. These partnerships have fostered innovation and contributed to the success of various projects.
Conclusion
Koichi Wajima's contributions to semiconductor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of the complexities of semiconductor devices, and his work continues to influence the field.