This inventor holds 3 USPTO granted patents. Top assignee: Seiko Instruments Inc. Active years: 1988.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1988
Title: Innovations of Shuji Ohtawa
Introduction
Shuji Ohtawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electronic timepieces, holding a total of 3 patents. His work focuses on enhancing the functionality and efficiency of timekeeping devices.
Latest Patents
One of Ohtawa's latest patents is for a self-chargeable electronic timepiece with operating voltage checking. This innovative timepiece incorporates a pair of small and large capacitors that are selectively connected to time-keeping circuitry and a solar cell. The capacitors work together to store electric charge, allowing the timepiece to maintain accurate time even after the solar cell's momentary operation. A detector monitors the terminal voltages of the capacitors, enabling a switching circuit to manage their connection to the time-keeping circuitry effectively.
Another significant patent is for a circuit designed for charging capacitors. This circuit includes a power source, multiple capacitors, and switching elements that control the connection of the capacitors to the power source. Resistors are integrated to ensure that the switching elements turn off when necessary, optimizing the charging process and enhancing the overall efficiency of the device.
Career Highlights
Shuji Ohtawa is currently employed at Seiko Instruments Inc., a company renowned for its advancements in timekeeping technology. His work at Seiko has allowed him to push the boundaries of innovation in electronic timepieces, contributing to the company's reputation for quality and precision.
Collaborations
Ohtawa has collaborated with talented coworkers such as Yuichi Inoue and Chiaki Nakamura. Their combined expertise has fostered a creative environment that encourages the development of groundbreaking technologies in the field of electronics.
Conclusion
Shuji Ohtawa's contributions to the field of electronic timepieces exemplify the spirit of innovation. His patents reflect a commitment to enhancing the functionality and efficiency of timekeeping devices. Ohtawa's work continues to influence the industry and inspire future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile