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For the Inventor, By the Inventor

Wakayama, Japan

Tetsuo Ishioka

This inventor holds 4 USPTO granted patents. Top assignee: Kubota Corporation. Active years: 1979-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuo Ishioka. Retrieved from https://idiyas.com/inventor/tetsuo-ishioka

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • Ito, JP (1979)
  • Wakayama, JP (1979 - 1982)
  • Sakai, JP (1996)

Company Filing History:

goldMedal4 out of 2,907 
 
Kubota Corporation
 patents

Years Active: 1979-1996

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4 patents (USPTO):Explore Patents
1. 5560277 - Structure for adjusting swash plate angle of a variable displacement (1996-10-01),
2. 4340128 - Offset type tractor (1982-07-20),
3. 4172503 - Offset type tractor (1979-10-30),
4. 4167982 - Reinforcement frame for an offset type tractor (1979-09-18),

Title: Tetsuo Ishioka: Innovator in Hydraulic Technology

Introduction

Tetsuo Ishioka is a notable inventor based in Wakayama, Japan. He has made significant contributions to the field of hydraulic technology, holding a total of 4 patents. His work focuses on innovative solutions that enhance the functionality and efficiency of hydraulic systems.

Latest Patents

Ishioka's latest patents include a structure for adjusting the swash plate angle of a variable displacement hydraulic motor. This hydraulic motor features a main case, a rotary shaft, and multiple cylinder blocks that include axial plungers. The design incorporates a swash plate member that contacts the distal ends of the plungers, with pivot shafts that allow for adjustable pivoting angles. Additionally, he has developed an offset type tractor that allows for independent maneuvering of working implements, enhancing operational flexibility.

Career Highlights

Ishioka is currently employed at Kubota Corporation, a leading company in agricultural and industrial machinery. His innovative designs have contributed to the advancement of hydraulic technology, making significant impacts in various applications.

Collaborations

Throughout his career, Ishioka has collaborated with talented individuals such as Yasunobu Yamaue and Hiroya Hanano. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Tetsuo Ishioka's contributions to hydraulic technology exemplify the spirit of innovation. His patents and collaborative efforts continue to influence the industry, showcasing the importance of creativity in engineering.

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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