Toshihiko Kohisa

Title: The Innovations of Toshihiko Kohisa

Introduction

Toshihiko Kohisa is a notable inventor based in Sayama, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of insulated gate-type field effect transistors. With a total of 2 patents to his name, Kohisa's work has had a lasting impact on capacitive memory circuits.

Latest Patents

Kohisa's latest patents include innovations that enhance the performance and reliability of insulated gate-type field effect transistors. One of his patents focuses on an IGFET with gate protection diode and antiparasitic isolation means. This invention describes insulated gate-type field effect transistors used in capacitive memory circuits, which incorporate protective diodes to safeguard the insulating films beneath the gate electrodes from electrical breakdown. The design effectively eliminates parasitic transistor action that may arise from minority carriers injected into semiconductor substrates by noise signals.

Another significant patent by Kohisa involves semiconductor circuit devices utilizing insulated gate-type field effect transistors. Similar to his previous work, this invention also addresses the protective measures for insulating films and the suppression of minority carrier injection, ensuring the integrity of the field effect transistors.

Career Highlights

Kohisa is currently associated with Hitachi, Ltd., a leading company in the technology sector. His role at Hitachi has allowed him to further his research and development efforts in semiconductor technology, contributing to the company's innovative projects.

Collaborations

Throughout his career, Kohisa has collaborated with esteemed colleagues such as Kosei Nomiya and Isao Matsumura. These collaborations have fostered a productive environment for innovation and have led to advancements in their respective fields.

Conclusion

Toshihiko Kohisa's contributions to semiconductor technology through his patents and collaborations highlight his importance as an inventor. His work continues to influence the development of reliable and efficient electronic devices.