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For the Inventor, By the Inventor

Anjo, Japan

Shiro Sakakibara

This inventor holds 72 USPTO granted patents, primarily in Variable Transmission (CPC class 474 ). Top assignees: Aisin Aw Co., Ltd., Aisin-Warner Kabushiki Kaisha, Aisin-Warner Limited. Active years: 1979-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shiro Sakakibara. Retrieved from https://idiyas.com/inventor/shiro-sakakibara

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

USPTO Granted Patents = 72

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 18

Forward Citations = 996(Granted Patents)

Forward Citations (Not Self Cited) = 953(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Aichi, JP (1983 - 1993)
  • Anjo, JP (1984 - 2000)
  • Toyokawa, JP (1979 - 2003)

Company Filing History:

goldMedal26 out of 2,064 
 
Aisin Aw Co., Ltd.
 patents
silverMedal25 out of 132 
 
Aisin-Warner Kabushiki Kaisha
 patents
bronzeMedal11 out of 54 
 
Aisin-Warner Limited
 patents
4. 6 out of 30 
 
Aisin Aw Kabushiki Kaisha
 patents
5. 3 out of 15 
 
Aisin-Warner K.k.
 patents
6. 1 out of 109 
 
Kabushikikaisha Equos Research
 patents
7. 1 out of 1,838 
 
Toyota Jidosha Kogyo Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1979-2003

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Areas of Expertise:
Endless Belt
Variable Transmission
Hydraulic Control
Continuously Variable
Automatic Transmission
Creep Torque Control
Speed Selector
Torque Converter
Actuator
Belt Drive
Transmission System
Pressure Regulating
72 patents (USPTO):Explore Patents
1. 6527657 - Endless belt for power transmitting (2003-03-04),
2. 6146308 - Creep torque control of infinitely variable transmission (2000-11-14),
3. 5961418 - Infinitely variable transmission (1999-10-05),
4. 5924450 - Control valve and hydraulic control device for continuously variable (1999-07-20),
5. 5846152 - Continuously variable transmission (1998-12-08),
6. 5690576 - Continuously variable transmission with control of switching between (1997-11-25),
7. 5669846 - Continuously variable transmission with control of switching between a (1997-09-23),
8. 5662547 - Continuously variable transmission (1997-09-02),
9. 5378198 - Continuous V-belt transmission (1995-01-03),
10. 5269204 - Hydraulic control system for vehicular automatic transmission (1993-12-14),
11. 5257188 - Engine brake control of continuous variable transmission responsive to (1993-10-26),
12. 5218541 - Automatic transmission control system responsive to road surface (1993-06-08),
13. 5205180 - Manual speed selector of automatic vehicle transmission (1993-04-27),
14. 5179867 - Automatic transmission for vehicle (1993-01-19),
15. 5178042 - Manual speed selector of automatic vehicle transmission (1993-01-12),

Title: Unveiling the Innovations of Shiro Sakakibara

Introduction

Shiro Sakakibara, a renowned inventor hailing from Anjo, Japan, has made significant contributions in the field of power transmission with an impressive portfolio of 72 patents to his name. His groundbreaking inventions have revolutionized the industry, combining efficiency with cost-effectiveness in novel ways.

Latest Patents

Among his latest patents is the "Endless belt for power transmitting," a tension-type belt that features a chain of links, delivering high power transmission efficiency at a relatively low production cost. This innovative belt design ensures reduced noise levels by optimizing the contact points of blocks and pins with sheave sides, ultimately enhancing performance and durability.

Another notable invention by Sakakibara is the "Creep torque control of infinitely variable transmission," which introduces a neutral control mechanism for belt-type continuously variable transmissions (CVT). By self-converging into the gear neutral point, this system establishes a stable force balance, enabling precise control of creep torque in varying load conditions.

Career Highlights

Throughout his illustrious career, Shiro Sakakibara has made significant contributions to leading companies such as Aisin Aw Co., Ltd. and Aisin-Warner Kabushiki Kaisha. His expertise and innovation have been instrumental in driving forward technological advancements in the field of power transmission and variable transmissions.

Collaborations

Sakakibara has collaborated with esteemed colleagues such as Masashi Hattori and Shuzo Moroto, pooling their expertise to create cutting-edge solutions in the realm of power transmission. Their combined efforts have yielded groundbreaking inventions that have redefined industry standards and paved the way for future innovations.

Conclusion

In conclusion, Shiro Sakakibara stands as a visionary inventor whose ingenuity and expertise have left an indelible mark on the field of power transmission. His relentless pursuit of innovation, coupled with his collaborative spirit, continues to inspire advancements that push the boundaries of technological possibility.

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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