Masao Iwata

This inventor holds 19 USPTO granted patents, plus 1 CIPO patent and 3 EPO patents, primarily in Internal Combustion Engines. Top assignees: Oppama Industry Co., Ltd, Oppama Kogyo Kabushiki Kaisha, Kioritz Corporation. Active years: 1983-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Iwata. Retrieved from https://idiyas.com/inventor/masao-iwata

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

USPTO Granted Patents = 19

% Patents Active = 57.9

CIPO Patents = 1 (Patent Applications = 1)

EPO Patents = 3 (Patent Applications = 1)

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 114(Granted Patents)

Location History:

Kanagawa, JP (1985 - 2004)
Yokosuka, JP (1983 - 2017)

Company Filing History:

10 out of 21

Oppama Industry Co., Ltd

patents

4 out of 12

Oppama Kogyo Kabushiki Kaisha

5. 3 out of 834,513

Other

patents

where one patent can have more than one assignee

Years Active: 1983-2017

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Areas of Expertise:

Ignition Control

Fuel Injection

Electrostatic Charging

Working Machine

Power Supply

Safety Device

Contactless Ignition

Engine Measurement

Magneto Rotor

Air-Fuel Mixture

Operation Measurement

Over-Rotation Prevention

19 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9726095 - Engine driven working machine (2017-08-08),

2. 8469001 - Work apparatus with internal combustion engine (2013-06-25),

3. 8161943 - Non-contact ignition control device of internal combustion engine (2012-04-24),

4. 7913547 - Engine rotating meter (2011-03-29),

5. 7726181 - Ignition timing measuring and display device of internal combustion engine (2010-06-01),

6. 6873073 - Magneto rotor (2005-03-29),

7. 6802284 - Fuel injection device and air-fuel mixture generating device provided with fuel injection device (2004-10-12),

8. 6584957 - Contactless ignition system for internal combustion engine (2003-07-01),

9. 6574085 - Power supply apparatus for electrostatic charging and method for same (2003-06-03),

10. 6467147 - Magneto electric generator rotor and an implement for removing this rotor (2002-10-22),

11. 6354522 - Electrostatic sprayer (2002-03-12),

12. 6023828 - Magneto electric generator rotor and an implement for removing this rotor (2000-02-15),

13. 5903079 - Rotor of rotating equipment (1999-05-11),

14. 5811908 - Magneto electric generator rotor and an implement for removing this rotor (1998-09-22),

15. 5793649 - Apparatus for measuring the operation of vehicular engines (1998-08-11),

Title: The Innovative Journey of Masao Iwata

Introduction

Masao Iwata, an accomplished inventor based in Yokosuka, Japan, has made significant contributions to the engineering sector, particularly in developing advanced work machines powered by internal combustion engines. With a total of 19 patents to his name, Iwata's innovations are a testament to his dedication to enhancing safety and efficiency in machinery.

Latest Patents

Two of Iwata's latest patents demonstrate his commitment to improving engine performance and safety features in work apparatuses. The first patent, titled "Engine Driven Working Machine," introduces a controller capable of shortening the time period until the rotation speed limitation mode is canceled. This innovation is vital for optimizing engine performance during transitions from fast idling to normal idling states. The second patent, "Work Apparatus with Internal Combustion Engine," addresses safety concerns by preventing accidental increases in engine revolutions, ensuring that cutting elements remain inactive during idle conditions.

Career Highlights

Throughout his career, Masao Iwata has worked with prominent companies such as Oppama Industry Co., Ltd and Oppama Kogyo Kabushiki Kaisha. His experiences in these organizations have laid the groundwork for his innovative mindset and allowed him to contribute to various engineering advancements. Iwata’s inventions reflect his deep understanding of complex mechanical systems and their safety protocols.

Collaborations

Iwata's journey is also marked by fruitful collaborations with esteemed colleagues, including Kiyoshige Enomoto and Yoshiki Kitamura. These partnerships have enabled him to expand his knowledge base and contribute collaboratively to groundbreaking projects in the realm of machinery and engine technology.

Conclusion

Masao Iwata stands as a prominent figure in the field of engineering inventions, with a remarkable portfolio of patents that enhance safety and efficiency. His latest innovations reflect a deep commitment to both the craftsmanship and functionality of work machines. As he continues to develop new technologies, Iwata undoubtedly paves the way for future advancements in the industry.

Profile summary based on public USPTO records.