This inventor holds 7 USPTO granted patents and 2 EPO patents. Top assignees: Citizen Watch Company, Ltd., Citizen Holdings Company, Ltd.. Active years: 1992-2014.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kodaira, JP (1992)
- Saitama, JP (1999)
- Tanashi, JP (1997 - 2001)
- Tokyo, JP (2010)
- Arakawa-ku, JP (2013)
- Koto, JP (2014)
Company Filing History:

Years Active: 1992-2014
Title: The Innovations of Tadashi Yasuoka
Introduction
Tadashi Yasuoka is a notable inventor based in Koto, Japan. He has made significant contributions to the field of timekeeping technology, holding a total of seven patents. His work primarily focuses on enhancing the functionality and performance of radio-controlled timepieces.
Latest Patents
One of Yasuoka's latest patents is a radio-controlled watch capable of performing leap second correction even when information on a leap second is not received from a satellite. This innovative watch adjusts time by receiving a signal containing time information from a satellite. It is designed to store a leap second correction value, display it, and allow users to change this value through an instruction operation.
Another significant patent is for a radio-controlled timepiece that enhances reception sensitivity. This timepiece includes an antenna core made of magnetic material, which is formed as a single integrated body. The design incorporates additional magnetic cores and magnetism-collection members, all assembled to improve reception performance. This innovative approach ensures that the antenna-core body is large and efficient, leading to better functionality.
Career Highlights
Yasuoka has worked with prominent companies in the watch industry, including Citizen Watch Company, Ltd. and Citizen Holdings Company, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in timekeeping technology.
Collaborations
Throughout his career, Yasuoka has collaborated with talented individuals such as Akinari Takada and Hitoshi Itakura. These collaborations have contributed to the advancement of his inventions and the overall progress in the field of radio-controlled timepieces.
Conclusion
Tadashi Yasuoka's contributions to the field of timekeeping technology are noteworthy. His innovative patents and collaborations have significantly impacted the design and functionality of radio-controlled watches. His work continues to influence the industry and inspire future advancements in timekeeping technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile