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For the Inventor, By the Inventor

Tokyo, Japan

Masakazu Sakamoto

This inventor holds 61 USPTO granted patents and 1 EPO patent, primarily in Electric Tools (CPC class D 8 ). Top assignees: Ryobi Limited, Bridgestone Corporation. Active years: 1978-2023.

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

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

USPTO Granted Patents = 61

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.1

ph-index = 16

Forward Citations = 752(Granted Patents)

Forward Citations (Not Self Cited) = 737(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Fukuyama, JA (1978)
  • Fukuyama, JP (1979 - 1983)
  • Chiba, JP (1984 - 1985)
  • Funabashi, JP (1984 - 1985)
  • Kodaira, JP (2022)
  • Tokyo, JP (1987 - 2023)

Company Filing History:

goldMedal58 out of 546 
 
Ryobi Limited
 patents
silverMedal3 out of 5,194 
 
Bridgestone Corporation
 patents

Years Active: 1978-2023

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Areas of Expertise:
Heavy Load Tire
Wear Amount Estimation
Tire Tread
Portable Electric Jigsaw
Band Saw
Electric Trimmer
Concrete Hammer
Battery Charger
Fishing Reel
Electric Mower
Portable Electric Drill
Power Concrete Hammer
61 patents (USPTO):Explore Patents
1. 11827060 - Heavy load tire (2023-11-28),
2. 11807047 - Wear amount estimation method, wear amount estimation device, and wear amount estimation program (2023-11-07),
3. D949778 - Tire tread (2022-04-26),
4. D404274 - Portable electric jigsaw (1999-01-19),
5. D345171 - Band saw (1994-03-15),
6. D343554 - Electric trimmer (1994-01-25),
7. D342878 - Portable electric hammer drill (1994-01-04),
8. D342425 - Electric mower (1993-12-21),
9. D341533 - Portable electric hammer drill (1993-11-23),
10. D341532 - Concrete hammer (1993-11-23),
11. D339510 - Portable electric saw (1993-09-21),
12. D337038 - Portable electric driver (1993-07-06),
13. D334756 - Compound miter saw (1993-04-13),
14. D333953 - Portable electric trimmer (1993-03-16),
15. D332208 - Portable electric driver drill (1993-01-05),

Title: The Innovative Mind of Masakazu Sakamoto

Introduction: Masakazu Sakamoto is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Masakazu Sakamoto holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Masakazu Sakamoto has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in various industries.

Collaborations: Throughout his career, Masakazu Sakamoto has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge-sharing.

Conclusion: Masakazu Sakamoto's passion for pushing the boundaries of technology and his relentless pursuit of innovation continue to inspire the next generation of inventors and shape the future of technological advancements globally.

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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