Yukio Aoyagi

This inventor holds 21 USPTO granted patents, primarily in Hydraulic Drive Systems. Top assignees: Hitachi Construction Machinery Co., Ltd., Hitachi, Ltd.. Active years: 1983-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yukio Aoyagi. Retrieved from https://idiyas.com/inventor/yukio-aoyagi

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

Calculating rank

USPTO Granted Patents = 21

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 15

Forward Citations = 563(Granted Patents)

Location History:

Chiyodamura, JP (1986)
Tsuchiura, JP (1988)
Ibaraki, JP (1983 - 1996)

Company Filing History:

20 out of 1,508

Hitachi Construction Machinery Co., Ltd.

Years Active: 1983-1996

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Areas of Expertise:

Hydraulic Drive System

Construction Machine

Pressure Compensating Valve

Hydraulic Power System

Load Weight Indicating

Control System

Hydrostatic Transmission

Pump Controlling Apparatus

Circuit Pressure Control

Single Rod Cylinder

Prime Movers

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5488787 - Hydraulic drive system for construction machine (1996-02-06),

2. 5295795 - Hydraulic drive system for construction machine (1994-03-22),

3. 5277027 - Hydraulic drive system with pressure compensting valve (1994-01-11),

4. 5174114 - Hydraulic drive system for construction machine (1992-12-29),

5. 5056312 - Hydraulic drive system for construction machines (1991-10-15),

6. 5048293 - Pump controlling apparatus for construction machine (1991-09-17),

7. 4768339 - Hydraulic drive system (1988-09-06),

8. 4627013 - Load weight indicating system for load moving machine (1986-12-02),

9. 4606313 - Method of and system for controlling hydraulic power system (1986-08-19),

10. 4587808 - Control system for hydraulic circuit means (1986-05-13),

11. 4586330 - Control system for hydraulic circuit apparatus (1986-05-06),

12. 4571941 - Hydraulic power system (1986-02-25),

13. 4561250 - Hydraulic drive system having a plurality of prime movers (1985-12-31),

14. 4561249 - Control system for hydraulic circuit apparatus (1985-12-31),

15. 4531369 - Flushing valve system in closed circuit hydrostatic power transmission (1985-07-30),

Hello! I can provide you with an article about inventor Yukio Aoyagi based on the data you have provided. Here's the structured article:

Title: Unveiling the Ingenious Mind of Yukio Aoyagi – A Prolific Inventor from Ibaraki, Japan

Introduction:

Yukio Aoyagi, a distinguished male inventor hailing from Ibaraki, Japan, has made significant contributions to the field of engineering with his innovative patents.

Latest Patents:

Aoyagi has an impressive track record of 21 patents to his name, with his latest inventions revolving around advanced hydraulic drive systems for construction machinery.

Career Highlights:

Throughout his illustrious career, Yukio Aoyagi has showcased his expertise while working at reputable companies such as Hitachi Construction Machinery Co., Ltd. and Hitachi Co., Ltd., where he has played a pivotal role in shaping cutting-edge technologies.

Collaborations:

Aoyagi's collaborative spirit has been instrumental in his success, as evidenced by his partnerships with esteemed colleagues like Eiki Izumi and Hiroshi Watanabe, who have collectively fueled innovation in the engineering realm.

Conclusion:

In conclusion, Yukio Aoyagi stands out as a visionary inventor whose exceptional work in the realm of hydraulic drive systems has not only demonstrated his technical prowess but also underscored his commitment to advancing the field of construction machinery. His legacy continues to inspire budding inventors and engineers alike, propelling the industry towards a future defined by groundbreaking innovations.

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]