Nagano, Japan

Yumi Sakamoto

This inventor holds 5 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 1989-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yumi Sakamoto. Retrieved from https://idiyas.com/inventor/yumi-sakamoto

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 4

Forward Citations = 93(Granted Patents)


Location History:

  • Suwa, JP (1989 - 1991)
  • Nagano-ken, JP (1996 - 1998)
  • Tatsuno-machi, JP (1998)

Company Filing History:


Years Active: 1989-1998

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5 patents (USPTO):Explore Patents

Title: Yumi Sakamoto: Innovator in Depth Measurement and Timekeeping Technologies

Introduction

Yumi Sakamoto is a prominent inventor based in Nagano-ken, Japan. She has made significant contributions to the fields of depth measurement and electronic timekeeping. With a total of 5 patents to her name, Sakamoto continues to push the boundaries of innovation in her industry.

Latest Patents

One of her latest inventions is a water depth measuring device designed for use in dive watches. This device incorporates a pressure sensor and an A/D converter that transforms the sensed signal into a digital value. The device features a comparator that assesses whether the initial digital value falls within a defined range, producing a comparison result that informs the water depth measurement. Additionally, Sakamoto has developed an electronic clock that utilizes a source oscillator and a frequency divider circuit. This clock includes an input device that generates a continuous input signal, allowing for precise time setting through a unique increment/decrement control circuit.

Career Highlights

Yumi Sakamoto is currently employed at Seiko Epson Corporation, where she applies her expertise in developing innovative technologies. Her work has garnered attention for its practical applications in consumer electronics, particularly in enhancing user experience and functionality.

Collaborations

Throughout her career, Sakamoto has collaborated with notable colleagues, including Tsuneaki Furukawa and Naoshi Furuta. These partnerships have contributed to the successful development of her patented technologies.

Conclusion

Yumi Sakamoto stands out as a talented inventor whose work in depth measurement and electronic timekeeping continues to influence the industry. Her innovative spirit and dedication to advancing technology are evident in her impressive portfolio of patents.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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