Shizuoka, Japan

Kazutoshi Ishioka

This inventor holds 4 USPTO granted patents and 1 published patent application and 8 EPO patents. Top assignee: Yamaha Hatsudoki Kabushiki Kaisha. Active years: 2010-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazutoshi Ishioka. Retrieved from https://idiyas.com/inventor/kazutoshi-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 = 1.3

ph-index = 3

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 2010-2015

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4 patents (USPTO):Explore Patents

Title: Kazutoshi Ishioka: Innovator in Continuously Variable Transmission Technology

Introduction

Kazutoshi Ishioka is a prominent inventor based in Shizuoka, Japan. He has made significant contributions to the field of continuously variable transmission (CVT) technology. With a total of 4 patents to his name, Ishioka's work has had a considerable impact on vehicle performance and efficiency.

Latest Patents

Ishioka's latest patents include a controller for continuously variable transmission and a vehicle equipped with the same. This innovative speed change ratio controller manages the speed change ratio of the CVT by utilizing a predetermined speed change ratio map. The controller ensures that the V-N characteristic curve, which is defined by vehicle speed (V) and engine rotational frequency (N), remains within a specified range. When certain conditions are met, such as exceeding a predetermined accelerator opening degree and vehicle load, the target speed change ratio is adjusted to maintain optimal performance.

Another notable patent involves a transmission and power unit designed to prevent engine speed from increasing during low-speed operation. This system includes a change-gear mechanism, a centrifugal clutch, a control unit, and a secondary sheave rotation sensor. The control unit plays a crucial role in managing the actuator based on the target change-gear ratio, ensuring smooth operation and efficiency.

Career Highlights

Kazutoshi Ishioka is currently employed at Yamaha Hatsudoki Kabushiki Kaisha, a leading company in the automotive industry. His work at Yamaha has allowed him to develop and refine his innovative ideas in transmission technology.

Collaborations

Ishioka has collaborated with notable coworkers, including Takeharu Noguchi and Toshio Unno. Their combined expertise has contributed to the advancement of CVT technology and the successful implementation of innovative solutions.

Conclusion

Kazutoshi Ishioka's contributions to continuously variable transmission technology have established him as a key figure in the automotive industry. His innovative patents and collaborative efforts continue to influence vehicle performance and efficiency.

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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