This inventor holds 2 USPTO granted patents. Top assignee: Nissan Motor Company Limited. Active years: 1984.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1984
Title: Shigeo Isitani: Innovator in Gas Sensing Technology
Introduction
Shigeo Isitani is a notable inventor based in Yokosuka, Japan. He has made significant contributions to the field of gas sensing technology, holding a total of 2 patents. His work focuses on developing advanced systems for temperature control and oxygen detection.
Latest Patents
One of Isitani's latest patents is a temperature control system designed for gas sensors. This system utilizes a heater and multiple reference resistors to create a bridge circuit. The temperature control system includes a comparator that monitors the balancing voltage of the bridge circuit, generating a control signal that indicates the balancing voltage. An electric power amplifier responds to this control signal, adjusting the voltage applied to the bridge circuit to minimize the balancing voltage. The gas sensor incorporates at least one reference resistor, which is calibrated based on the heater's resistance.
Another significant patent is an oxygen sensing device that employs a solid electrolyte cell. This device detects oxygen concentrations in gases using an oxygen sensor element that features a substrate with a heater and a laminated concentration cell part. The device includes a power supply circuit that maintains a constant temperature for the heater by controlling its resistance. Additionally, a current supply circuit ensures a controlled DC current flows through the solid electrolyte layer, maintaining a reference oxygen partial pressure even when the temperature of the gas being measured varies.
Career Highlights
Shigeo Isitani is currently employed at Nissan Motor Company Limited, where he continues to innovate in the field of gas sensing technology. His work has contributed to advancements in automotive applications, enhancing the safety and efficiency of vehicles.
Collaborations
Isitani has collaborated with notable colleagues, including Masaaki Uchida and Kohki Sone. Their combined expertise has fostered a productive environment for innovation and development in their respective fields.
Conclusion
Shigeo Isitani's contributions to gas sensing technology through his patents and work at Nissan Motor Company Limited highlight his role as a key innovator in this field. His advancements in temperature control and oxygen detection systems are paving the way for future developments in automotive technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile