Nagoya, Japan

Toshitaka Yamada

This inventor holds 17 USPTO granted patents, primarily in Semiconductor Sensors. Top assignees: Nippondenso Co., Ltd., Denso Corporation, Toyota Jidosha Kabushiki Kaisha. Active years: 1986-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshitaka Yamada. Retrieved from https://idiyas.com/inventor/toshitaka-yamada

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

Calculating rank

% Patents Active = 94.1

Average Co-Inventor Count = 4.2

ph-index = 9

Forward Citations = 176(Granted Patents)


Location History:

  • Nagoya, JP (1986 - 1996)
  • Okazaki, JP (1996 - 2006)

Company Filing History:


Years Active: 1986-2006

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Areas of Expertise:
Rotational Speed Detector
Position Detector
Surge Protective Device
Temperature Drift Filter
Semiconductor Accelerometer
Strain Sensor
Engine Control
Airflow Measurement
Magnetoresistance Element
Internal Combustion Engine
Heat-Wire Type
Damperless Structure
17 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Toshitaka Yamada

Introduction

Toshitaka Yamada is a prominent inventor based in Nagoya, Japan, known for his significant contributions to the field of engineering. With a total of 17 patents to his name, Yamada has made remarkable advancements, particularly in the area of turbocharging technology.

Latest Patents

One of Yamada's latest patents is a rotational speed and position detector for superchargers. This invention involves a motor-assisted turbocharger that includes a turbine driven by exhaust gas energy, a compressor rotated by the turbine, and a rotary electric machine that assists the compressor's rotation. These components are interconnected by a common rotating shaft. A polygon nut with a magnetic member is attached to the rotating shaft's axial end, facing a fixed magnetic sensor. The magnetic field created between the magnetic member and the sensor changes with the rotation of the shaft, allowing for the detection of the compressor's rotational speed and position. The turbocharger's operation is electronically controlled based on these detected parameters.

Another notable patent is a rotation detector using a magnetoresistance element positioned in proximity to a toothed gear rotated by an engine. This element detects the angular position of the gear, even before the engine starts, by utilizing a magnetic field supplied from a bias magnet. An additional magnetoresistance element can be used to determine the exact angle of the gear once it begins to rotate.

Career Highlights

Throughout his career, Toshitaka Yamada has worked with notable companies such as Nippondenso Co., Ltd. and Denso Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.

Collaborations

Yamada has collaborated with talented individuals in his field, including Tiaki Mizuno and Susumu Akiyama. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Toshitaka Yamada's contributions to engineering and technology, particularly in turbocharging systems, highlight his innovative spirit and dedication to advancing the field. His patents reflect a commitment to improving automotive 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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