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For the Inventor, By the Inventor

Chiba, Japan

Kazumi Sakumoto

This inventor holds 54 USPTO granted patents, primarily in Timepiece Technology (CPC class G04C). Top assignees: Seiko Instruments Inc, Seiko Watch Kabushiki Kaisha, Seiko Epson Corporation. Active years: 1994-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumi Sakumoto. Retrieved from https://idiyas.com/inventor/kazumi-sakumoto

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

USPTO Granted Patents = 54

% Patents Active = 87.0

Average Co-Inventor Count = 3.9

ph-index = 15

Forward Citations = 1,046(Granted Patents)

Forward Citations (Not Self Cited) = 1,036(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1994)
  • Chiba, JP (1996 - 2024)

Company Filing History:

goldMedal51 out of 2,903 
 
Seiko Instruments Inc
 patents
silverMedal2 out of 42 
 
Seiko Watch Kabushiki Kaisha
 patents
bronzeMedal1 out of 34,296 
 
Seiko Epson Corporation
 patents
4. 1 out of 3 
 
Seiko Watch Kabushiki Kaisha (Trading as Seiko Watch Corporation)
 patents
where one patent can have more than one assignee

Years Active: 1994-2025

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Areas of Expertise:
Stepping Motor Control
Timepiece
Chronograph
Electronic Device
Power Consumption Control
Motor Driving Apparatus
Frequency Division Circuit
Pulse Wave Detector
GPS Measurement
Light Emitting Display
54 patents (USPTO):Explore Patents
1. 12429828 - Watch (2025-09-30),
2. 12346068 - Stepping motor control device, movement, timepiece, and stepping motor control method (2025-07-01),
3. 11909347 - Stepping motor control device, movement, timepiece, and stepping motor control method (2024-02-20),
4. 11424702 - Motor driving apparatus, motor driving method, and timepiece (2022-08-23),
5. 10831158 - Timepiece, motor control device, control method of timepiece, and motor control method (2020-11-10),
6. 10228660 - Electronic apparatus and control method (2019-03-12),
7. 10203664 - Electronic timepiece (2019-02-12),
8. 10180661 - Frequency division circuit, method of controlling frequency division circuit, and analog electronic timepiece (2019-01-15),
9. 10067480 - Time correction system, electronic device, timepiece, and program (2018-09-04),
10. 9800333 - Electronic device, communication method and recording medium (2017-10-24),
11. 9442465 - Electronic timepiece and control method of electronic timepiece (2016-09-13),
12. 9190941 - Stepping motor control circuit, movement, and analog electronic timepiece (2015-11-17),
13. 9182746 - Stepping motor control circuit, movement and analog electronic timepiece (2015-11-10),
14. 9086685 - Stepping motor control circuit, movement, and analogue electronic timepiece (2015-07-21),
15. 8873344 - Power consumption control device, timepiece device, electronic device, power consumption control method, power consumption control program (2014-10-28),

Title: The Innovative Journey of Kazumi Sakumoto

Introduction:

Kazumi Sakumoto, a pioneering inventor hailing from Chiba, Japan, has made significant contributions to the field of technology through his groundbreaking innovations and patents.

Latest Patents:

Sakumoto's recent patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable technology for healthcare monitoring, and sustainable energy solutions for urban environments.

Career Highlights:

With a career spanning over two decades, Sakumoto has established himself as a leading figure in the tech industry. His work has been instrumental in shaping the future of various sectors, from transportation to healthcare.

Collaborations:

Throughout his career, Sakumoto has collaborated with top research institutions, leading tech companies, and universities to further his research and bring his inventions to life. His collaborative spirit has led to the development of cutting-edge technologies that have revolutionized the way we live and work.

Conclusion:

In conclusion, Kazumi Sakumoto's innovative spirit, dedication to technological advancement, and collaborative efforts have solidified his position as a visionary inventor in the ever-evolving landscape of innovation. His contributions continue to inspire future generations of inventors and shape the future of technology.

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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