Hisao Yamaguchi

Title: Hisao Yamaguchi: Innovator in Semiconductor Technology and Strapping Machines

Introduction

Hisao Yamaguchi is a notable inventor based in Yokohama, Japan. He has made significant contributions to the fields of semiconductor devices and machinery. With a total of 2 patents, Yamaguchi's work reflects his expertise and innovative spirit.

Latest Patents

Yamaguchi's latest patents include a semiconductor device with a pad electrode. This invention involves the formation of an N.sup.- -type epitaxial layer on a P-type semiconductor substrate. A P-type region is created within the N.sup.- -type epitaxial layer, along with first and second N.sup.- -type layer islands that are isolated by the P-type region. Additionally, an N.sup.+ -type contact region is established in the surface region of the first N.sup.- -type layer island. A pad electrode is positioned above this layer island, separated by an oxide film. Furthermore, a polysilicon layer, which acts as a resistor, is formed above the second N.sup.- -type layer island, also with an oxide film in between. The invention includes conductive layers that facilitate electrical connections between the polysilicon layer and the contact region, as well as a stable high-potential power source.

Another significant patent is for a band-returning and tightening apparatus for a band type strapping machine. This machine features a swing lever that supports a gripper for gripping a band. The swing lever operates based on the rotation of a cam mounted on a cam shaft. A control bar is engaged with the swing lever to follow its movement. The driving roller engages with a band tightening roller, which operates at low speed and high torque through solenoid actuation.

Career Highlights

Throughout his career, Hisao Yamaguchi has worked with prominent companies such as Nichiro Kogyo Co., Ltd. and Toshiba Corporation. His experience in these organizations has contributed to his development as an inventor and innovator in his field.

Collaborations

Yamaguchi has collaborated with notable coworkers, including Motoaki Mori and Yuichi Hirose. Their collective efforts have likely influenced the advancements in technology and innovation within their respective projects.

Conclusion

Hisao Yamaguchi's contributions to semiconductor technology and machinery exemplify his innovative capabilities. His patents reflect a deep understanding of complex