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For the Inventor, By the Inventor

Kariya, Japan

Masami Fujitsuna

This inventor holds 15 USPTO granted patents, primarily in Automatic Transmission Control. Top assignees: Denso Corporation, Nippondenso Co., Ltd., Mie University. Active years: 1997-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masami Fujitsuna. Retrieved from https://idiyas.com/inventor/masami-fujitsuna

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

Calculating rank
USPTO Granted Patents = 15

% Patents Active = 80.0

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 180(Granted Patents)


Company Filing History:

goldMedal10 out of 20,443 
 
Denso Corporation
 patents
silverMedal5 out of 3,252 
 
Nippondenso Co., Ltd.
 patents
bronzeMedal1 out of 85 
 
Mie University
 patents
where one patent can have more than one assignee

Years Active: 1997-2013

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Areas of Expertise:
Rotary Machine
Power Control
Automatic Transmission
Electric System
Motor Control
Hydraulic Pressure
Lock-Up Clutch
Dynamic System
Slip Control
Turbo Charger
Reluctance Motor
15 patents (USPTO):Explore Patents
1. 8427088 - Apparatus for carrying out improved control of rotary machine (2013-04-23),
2. 7432609 - Exhaust gas-driven generator system and method of controlling electrical system (2008-10-07),
3. 7352151 - Method of estimating magnetic pole position in motor and apparatus of controlling the motor based on the estimated position (2008-04-01),
4. 7315091 - Method and system for controlling power to be fed to electrical loads (2008-01-01),
5. 7084600 - Power control apparatus for a turbo charger equipped with an assist motor and a motor driven turbo charging apparatus (2006-08-01),
6. 6264581 - Controller of automatic transmission having a lock up clutch and control method of the automatic transmission (2001-07-24),
7. 6236132 - Reluctance type motor (2001-05-22),
8. 6036619 - Controller of automatic transmission having a lockup clutch and control (2000-03-14),
9. 5993338 - Apparatus for controlling dynamic system in sliding mode and feedforward (1999-11-30),
10. 5911647 - Control apparatus for automatic transmission (1999-06-15),
11. 5848370 - Hydraulic pressure control apparatus for automatic transmission (1998-12-08),
12. 5762581 - Automatic transmission control system for improving shift quality during (1998-06-09),
13. 5752210 - Method and apparatus for controlling speed-change transient mode of (1998-05-12),
14. 5719768 - Lock-up clutch control method (1998-02-17),
15. 5653661 - Lock-up clutch slip control for an automatic transmission (1997-08-05),

Title: Masami Fujitsuna: Inventor in Rotary-Machine Control and Exhaust-Gas Power Generation.

Introduction

Masami Fujitsuna is an inventor associated with Kariya, Japan, and with engineering work at Denso Corporation and Nippondenso Co., Ltd. Her patent portfolio includes 15 patents, with inventions addressing rotary-machine control and the use of engine exhaust energy for electrical generation.

Latest Patents

One of Fujitsuna’s latest patents, “Apparatus for Carrying Out Improved Control of Rotary Machine,” describes a control system for a power converter. A predicting unit estimates a controlled variable using measured values, while a driving unit uses the difference between that prediction and a command value to determine how to operate a switching element.

Her patent “Exhaust Gas-Driven Generator System and Method of Controlling Electrical System” concerns generating electricity with an exhaust-gas-driven rotating electric machine. The system adjusts the amount of generated power to limit the additional fuel required, helping make effective use of engine exhaust energy.

Career Highlights

Fujitsuna’s listed work connects her to Denso Corporation and Nippondenso Co., Ltd., companies associated with automotive and electrical engineering. Her patents reflect a focus on power-generation systems and control technologies.

Collaborations

Fujitsuna’s listed coworkers include Tetsuji Kozaki and Tsutomu Tashiro. Their shared professional context reflects collaboration among inventors working on engineering and patent development.

Conclusion

Masami Fujitsuna’s patent work highlights practical approaches to rotary-machine control and exhaust-energy generation, supported by her experience with Denso Corporation and Nippondenso Co., Ltd.

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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