Location History:
- Toukai, JP (1987)
- Naka, JP (1988)
- Ibaraki, JP (1990)
Company Filing History:
Years Active: 1987-1990
Title: **Inventor Tetsuo Kosugi: Innovations in Oxide Resistor Technology**
Introduction
Tetsuo Kosugi is a prominent inventor based in Ibaraki, Japan. With a remarkable portfolio of three patents, Kosugi has made significant contributions to the field of electronic components, particularly in the development of oxide resistors. His innovative work has garnered recognition in the industry and paved the way for advancements in resistor technology.
Latest Patents
One of Tetsuo Kosugi’s latest patents focuses on a composite sintered oxide resistor that incorporates crystal grains of zinc oxide along with those of a zinc oxide compound derived from other metal or semi-metal elements. This innovation features a grain boundary layer that offers electrical resistance equal to or lower than that of the zinc oxide crystal grains. The resistor is noted for its impressive capabilities, including a substantial withstanding capacity against switch surge, a low non-linear coefficient of voltage in voltage-current characteristics, a positive and smaller resistance-temperature coefficient, as well as minimal change in resistivity even after heat treatment at 500°C in the atmosphere.
Career Highlights
Kosugi's expertise is exemplified through his work at Hitachi, Ltd., where he has played a crucial role in research and development. His focus on oxide resistors has not only contributed to the company's success but has also propelled the technology forward, enhancing the performance reliability of electronic devices.
Collaborations
Throughout his career, Tetsuo Kosugi has collaborated with notable colleagues such as Takeo Yamazaki and Satoru Ogihara. These partnerships have fostered a collaborative environment that encourages innovation and the pursuit of excellence in their projects.
Conclusion
Tetsuo Kosugi stands as a testament to the spirit of invention and innovation in the technology sector. His groundbreaking work on oxide resistors continues to influence the field and demonstrates the impact that dedicated inventors can have on technological advancement. With his extensive knowledge and experience, Kosugi remains a valuable asset in the ongoing development of improved electronic components.