This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignee: Fuji Electric Co., Ltd.. Active years: 1988-1999.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Tochigiken, JP (1988)
- Kanagawa, JP (1991)
- Kawasaki, JP (1992)
- Tochigi, JP (1992 - 1999)
Company Filing History:
Years Active: 1988-1999
Title: Kiyoshi Tanigawa: Innovator in Electrical Engineering
Introduction
Kiyoshi Tanigawa is a prominent inventor based in Tochigi, Japan. He has made significant contributions to the field of electrical engineering, holding a total of 5 patents. His innovative designs focus on enhancing safety and efficiency in electrical systems.
Latest Patents
One of his latest inventions is the Earth Leakage Breaker. This device includes a first comparator, a second comparator connected to the first, and a third comparator designed to distinguish leakage currents from grounding currents caused by lightning surges or heavy ground faults. The breaker features a monostable multivibrator that forms a time gate of a predetermined period, a counter for detecting pulse outputs, and a trip signal generator circuit. This invention effectively prevents unnecessary interruptions caused by impulsive grounding currents.
Another notable patent is the Optical Fiber Switch. This optical switch incorporates two spherical or elliptical corner-reflecting surfaces within a light-conducting member, along with a shutter that opens and closes the light path. The design includes focusing lenses that enhance the efficiency of beam transmission, ensuring minimal leakage. The switch can indicate its ON/OFF state and can be adapted for use as a transfer-type optical switch.
Career Highlights
Kiyoshi Tanigawa is currently employed at Fuji Electric Co., Ltd., where he continues to develop innovative solutions in electrical engineering. His work has significantly impacted the industry, particularly in safety devices and optical technologies.
Collaborations
Throughout his career, Tanigawa has collaborated with notable colleagues, including Shoji Sasaki and Hideyuki Tanaka. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Kiyoshi Tanigawa's contributions to electrical engineering through his patents and collaborations highlight his role as a leading inventor in the field. His work continues to influence advancements in safety and efficiency in electrical systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile