Kizuku Otsubo

This inventor holds 8 USPTO granted patents. Top assignees: Nissan Motor Company Limited, Japan Electronic Control Systems Company, Limited. Active years: 1976-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kizuku Otsubo. Retrieved from https://idiyas.com/inventor/kizuku-otsubo

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 5

Forward Citations = 53(Granted Patents)

Location History:

Kokubunji, JA (1976 - 1978)
Kokubunji, JP (1978 - 1979)
Kawasaki, JP (1982)

Company Filing History:

8 out of 13,420

Nissan Motor Company Limited

patents

1 out of 130

Japan Electronic Control Systems Company, Limited

patents

where one patent can have more than one assignee

Years Active: 1976-1982

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4311129 - Auxiliary air regulator for internal combustion engine (1982-01-19),

2. 4137874 - Exhaust gas recirculation control system (1979-02-06),

3. 4133331 - Dual spark-plug ignition internal combustion engine with improved (1979-01-09),

4. 4125096 - Ignition timing control system (1978-11-14),

5. 4116179 - Dual spark-ignition internal combustion engine (1978-09-26),

6. 4077375 - Fuel vaporizer (1978-03-07),

7. 4027633 - Ignition timing control system (1977-06-07),

8. 3986353 - Secondary air pressure control valve (1976-10-19),

Title: Kizuku Otsubo: Innovator in Engine Control Technologies

Introduction

Kizuku Otsubo is a notable inventor based in Kokubunji, Japan. He has made significant contributions to the field of internal combustion engine technology, holding a total of 8 patents. His innovative designs focus on improving engine efficiency and performance.

Latest Patents

One of Otsubo's latest patents is an auxiliary air regulator for internal combustion engines. This invention features a bypass passage that connects the air intake passage upstream and downstream of the throttle valve. It includes a movable shutter that controls the effective cross-sectional area of the bypass passage, utilizing a bimetallic coil to adjust the shutter in response to temperature changes. Another significant patent is an exhaust gas recirculation control system. This system uses engine suction to manage the admission of atmospheric air into a vacuum chamber, optimizing the EGR control valve's operation during varying engine loads.

Career Highlights

Throughout his career, Kizuku Otsubo has worked with prominent companies, including Nissan Motor Company and Japan Electronic Control Systems. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.

Collaborations

Otsubo has collaborated with talented individuals in the field, including Hiraki Sawada and Ken Nakamura. Their combined expertise has contributed to the advancement of engine control technologies.

Conclusion

Kizuku Otsubo's contributions to engine technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the automotive industry positively.

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]