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For the Inventor, By the Inventor

Sakai, Japan

Masami Hirooka

This inventor holds 11 USPTO granted patents. Top assignee: Kubota Corporation. Active years: 1982-2003.

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

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 6

Forward Citations = 132(Granted Patents)


Location History:

  • Osaka, JP (1988 - 1993)
  • Sakai, JP (1982 - 2003)

Company Filing History:

goldMedal11 out of 2,907 
 
Kubota Corporation
 patents

Years Active: 1982-2003

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11 patents (USPTO):Explore Patents
1. 6530741 - Self propelled vehicle with a loader (2003-03-11),
2. 6142724 - Front loader attaching structure (2000-11-07),
3. 6035941 - Tractor with a front loader (2000-03-14),
4. 5540289 - Stand apparatus for use in coupling and uncoupling a front loader (1996-07-30),
5. 5536134 - Working implement coupling apparatus (1996-07-16),
6. 5240367 - Front loader attaching and removing method (1993-08-31),
7. 4966518 - Apparatus for controlling posture of front loader (1990-10-30),
8. 4802814 - Device for attaching front loader to tractor (1989-02-07),
9. 4755101 - Device for removably attaching front loader to vehicle (1988-07-05),
10. D273384 - Earth moving machine (1984-04-10),
11. 4355693 - Working vehicle (1982-10-26),

Title: Masami Hirooka: Innovator in Self-Propelled Vehicle Technology

Introduction

Masami Hirooka is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of vehicle technology, holding a total of 11 patents. His innovative designs focus on enhancing the functionality and efficiency of self-propelled vehicles.

Latest Patents

Hirooka's latest patents include a self-propelled vehicle with a loader. This vehicle features a body that extends in a fore and aft direction, with support bases extending laterally from opposite sides. The design incorporates main frames that are box-shaped, opening forward and upward, and includes engaging elements for operational efficiency. Additionally, he has developed a front loader attaching structure that consists of H-shaped cross-section units, enhancing the vehicle's versatility in various working conditions.

Career Highlights

Hirooka has dedicated his career to advancing vehicle technology, particularly in the area of self-propelled machinery. His work at Kubota Corporation has positioned him as a key player in the industry, where he continues to innovate and improve vehicle designs.

Collaborations

Throughout his career, Hirooka has collaborated with talented individuals such as Isao Kourogi and Koichi Kawaguchi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Masami Hirooka's contributions to vehicle technology exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and a dedication to improving the functionality of self-propelled vehicles.

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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