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Aichi Steel Corporation

USPTO Granted Patents = 142

% Expired Patents = 15.5

EPO Patents = 67

Trademarks = 3

Forward Citations = 345

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110 inventors (with patents filed for the assignee):

Michiharu Yamamoto (88 out of 90 patents)

Hitoshi Aoyama (56 out of 57 patents)

Tomohiko Nagao (52 out of 53 patents)

4. Yoshinobu Honkura (40 out of 80 patents)

5. Norihiko Hamada (13 out of 13 patents)

6. Takeshi Kawano (10 out of 10 patents)

7. Kazuo Arai (10 out of 13 patents)

8. Hiroshi Matsuoka (9 out of 10 patents)

9. Hironari Mitarai (9 out of 14 patents)

10. Akihiro Shimode (9 out of 9 patents)

11. Masaki Mori (8 out of 14 patents)

12. Kazuo Urakawa (7 out of 7 patents)

13. Hideo Arakawa (6 out of 6 patents)

14. Chisato Mishima (6 out of 10 patents)

15. Kosuke Namba (4 out of 4 patents)

Core Competencies:

Magnetic Marker

Vehicular System

Sensor Technology

Marker Detection

Magneto-sensitive Wire

Driving Assistance

Position Estimation

Calibration Method

Magnetic Sensor

Automatic Parking

Information Acquisition

Field Magnet

142 patents: Sort by Forward Citations

1. 12630508 - Method for manufacturing heterocycle-containing amino acid compound (2026-05-19),

2. 12608007 - Vehicle-oriented system and information reading method (2026-04-21),

3. 12607485 - Magnetic marker detection method and detection system (2026-04-21),

4. 12602055 - Vehicular system (2026-04-14),

5. 12601612 - Vehicle system including sensor unit for detecting magnetic marker laid on a road (2026-04-14),

6. 12578495 - Sensor block for magnetism measurement (2026-03-17),

7. 12566223 - Magnetic detection device (2026-03-03),

8. 12516958 - Magnetic marker detection method and system (2026-01-06),

9. 12503821 - Magnetic marker installation method and supplemental tool for installing magnetic marker (2025-12-23),

10. 12493300 - System and magnetic marker detection method (2025-12-09),

11. 12422860 - Magnetic marker system and magnetic marker system designing method (2025-09-23),

12. 12422506 - Magneto-sensitive wire and manufacturing method therefor (2025-09-23),

13. 12399233 - Magnetic sensor and biomagnetism measuring apparatus (2025-08-26),

14. 12382957 - Lactam compound or salt thereof, complex, and fertilizer and plant growth regulator containing said compound or salt and complex (2025-08-12),

15. 12326487 - Magneto-impedance sensor element (2025-06-10),

Company Overview

Aichi Steel Corporation, headquartered in Tokai, Japan, specializes in advanced magnetic marker technology, focusing on applications in vehicular systems and sensor technology. The company is dedicated to developing innovative solutions for marker detection, driving assistance, and position estimation, utilizing magneto-sensitive wire and sophisticated calibration methods. Aichi Steel's expertise positions it as a key player in enhancing automotive safety and efficiency through cutting-edge technological advancements.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

142 Patents

#1 in Tokai

#889 in Japan

#5,722 in the World

Aichi Steel Corporation

Forward Citations = 345

110 inventors:

Michiharu Yamamoto (88 out of 90 patents)

Hitoshi Aoyama (56 out of 57 patents)

Tomohiko Nagao (52 out of 53 patents)

4. Yoshinobu Honkura (40 out of 80 patents)

5. Norihiko Hamada (13 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aichi Steel Corporation. Retrieved from https://idiyas.com/company/aichi-steel

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

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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