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For the Inventor, By the Inventor

Wako, Japan

Masahiko Yakuwa

This inventor holds 17 USPTO granted patents, primarily in Internal Combustion Engines. Top assignees: Honda Giken Kogyo Kabushiki Kaisha, Honda Giken Kogyo K.k., Oki Electric Industry Co., Ltd.. Active years: 1986-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Yakuwa. Retrieved from https://idiyas.com/inventor/masahiko-yakuwa

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 9

Forward Citations = 188(Granted Patents)


Location History:

  • Fujimi, JP (1986 - 1987)
  • Saitama, JP (1986 - 1989)
  • Tochigi, JP (1989 - 1990)
  • Wako, JP (1987 - 1995)

Company Filing History:

goldMedal11 out of 10,092 
 
Honda Giken Kogyo Kabushiki Kaisha
 patents
silverMedal6 out of 182 
 
Honda Giken Kogyo K.k.
 patents
bronzeMedal1 out of 4,980 
 
Oki Electric Industry Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-1995

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Areas of Expertise:
Abnormality Detection
Fuel Injection Control
Exhaust Gas Sensing
Temperature Sensors
Current Detection
Electromagnetic Actuator
Engine Control Systems
Microcomputer Functions
Solenoid Valve Driving
Power Management
Deterioration Detection
Backup Systems
17 patents (USPTO):Explore Patents
1. 5461569 - Abnormality diagnostic system for internal combustion engines (1995-10-24),
2. 5052361 - Method of detecting deterioration of an exhaust gas concentration sensor (1991-10-01),
3. 5003954 - Fail-safe device for temperature sensors (1991-04-02),
4. 4979143 - Recovery from power-down mode (1990-12-18),
5. 4964050 - Method of controlling electrical devices of internal combustion engines (1990-10-16),
6. 4953056 - Current detection apparatus for use in electromagnetic actuator drive (1990-08-28),
7. 4951632 - Exhaust gas component concentration sensing device and method of (1990-08-28),
8. 4892077 - Fuel injection control method for internal combustion engines (1990-01-09),
9. 4862369 - Electronically-controlled fuel injection system (1989-08-29),
10. 4844038 - Abnormality detecting method for exhaust gas concentration sensor for (1989-07-04),
11. 4831536 - Method of processing controlled variables in engine control system (1989-05-16),
12. 4775957 - Microcomputer with abnormality sensing function (1988-10-04),
13. 4764729 - Method of detecting abnormality in electromagnetic valve current (1988-08-16),
14. 4656989 - System for driving solenoid valve for internal combustion engine (1987-04-14),
15. 4644917 - Method and apparatus for controlling an internal combustion engine (1987-02-24),

Title: Masahiko Yakuwa: Innovator in Internal Combustion Engine Diagnostics

Introduction

Masahiko Yakuwa is a prominent inventor based in Wako, Japan, known for his significant contributions to the field of internal combustion engine diagnostics. With a total of 17 patents to his name, Yakuwa has developed innovative systems that enhance the reliability and efficiency of engine operations.

Latest Patents

One of Yakuwa's latest patents is an abnormality diagnostic system for internal combustion engines. This invention provides a diagnostic system that detects abnormalities in input/output objects used in controlling engine operations under predetermined conditions. The system is designed to carry out specific fail-safe actions when abnormalities are detected. Another notable patent is a method for detecting the deterioration of an exhaust gas concentration sensor. This method involves integrating the difference between the sensor's output and a predetermined reference value, allowing for accurate determination of sensor deterioration.

Career Highlights

Throughout his career, Masahiko Yakuwa has worked with notable companies, including Honda Giken Kogyo Kabushiki Kaisha and Honda Giken Kogyo K.K. His work in these organizations has contributed to advancements in automotive technology and engine diagnostics.

Collaborations

Yakuwa has collaborated with esteemed colleagues such as Kikuo Tomozawa and Hideto Iijima, further enhancing the impact of his innovations in the automotive industry.

Conclusion

Masahiko Yakuwa's contributions to internal combustion engine diagnostics exemplify his dedication to innovation and engineering excellence. His patents reflect a commitment to improving engine performance and reliability, making him a significant figure in the field.

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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