Himeji, Japan

Hajime Kako

This inventor holds 26 USPTO granted patents, primarily in Internal Combustion Engines. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Denki K.k., Mikuni Corporation. Active years: 1986-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Kako. Retrieved from https://idiyas.com/inventor/hajime-kako

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 = 1.4

ph-index = 10

Forward Citations = 257(Granted Patents)


Location History:

  • Himeji, JP (1986 - 1996)
  • Hyogo, JP (1990 - 1996)
  • Tokyo, JP (1999 - 2000)

Company Filing History:


Years Active: 1986-2000

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Areas of Expertise:
Valve Timing Control
Fuel Injection
EGR System
Throttle Control
Air-Fuel Ratio
Engine Control
Ignition Timing
Atmospheric Pressure
Fault Detection
Hydraulic Apparatus
Flow Quantity
Cylinder Identification
26 patents (USPTO):Explore Patents

Title: Hajime Kako: Innovator in Hydraulic Systems and Valve Timing Control

Introduction

Hajime Kako, based in Himeji, Japan, is a prominent inventor with an impressive portfolio of 26 patents. His work primarily focuses on innovations in hydraulic systems and internal combustion engine technology. Kako’s inventions have significantly advanced the efficiency and reliability of engine operations, showcasing his dedication to innovation in engineering.

Latest Patents

Hajime Kako's recent contributions to technology include two notable patents. The first is a "Hydraulic Apparatus for Adjusting the Timing of Opening and Closing," which addresses the challenges posed by oil sludge accumulation within actuators. This invention introduces a method for cleaning the actuator's inner surface by controlling the hydraulic media during the engine's idle state, thus maintaining the functionality of the valve timing adjustment system. The second patent focuses on the "Valve Timing Controlling Device of Internal Combustion Engine." It features a mechanism that stabilizes the actual valve timing to converge towards a target valve timing, ensuring efficient engine operation through advanced integration control.

Career Highlights

Throughout his career, Hajime Kako has worked with leading companies in the engineering sector, notably Mitsubishi Electric Corporation and Mitsubishi Denki Co., Ltd. His experience in these prestigious organizations has enriched his expertise in hydraulic systems and internal combustion engine technologies, allowing him to contribute valuable innovations to the field.

Collaborations

Kako has collaborated with other skilled professionals, including Masaaki Miyazaki and Shinji Kojima, who have been instrumental in developing his groundbreaking technologies. These collaborations highlight the importance of teamwork in driving technological advancements and improving industry practices.

Conclusion

Hajime Kako's remarkable contributions to hydraulic and engine technology have positioned him as a leading innovator in his field. With 26 patents to his name, his work continues to influence the design and function of modern engine systems, paving the way for more efficient and reliable vehicles in the future.

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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