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For the Inventor, By the Inventor

Tokyo, Japan

Komatsu Corporation

Calculating rank
USPTO Granted Patents = 2,824

% Expired Patents = 22.7



Trademarks = 29

Forward Citations = 19,853

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2,148 inventors (with patents filed for the assignee):

goldMedal Shigeru Yamamoto (56 out of 74 patents)

silverMedal Takemori Takayama (45 out of 48 patents)

bronzeMedal Tomohiro Nakagawa (39 out of 103 patents)

4.  Shuuji Hori (38 out of 38 patents)

5.  Eiji Ishibashi (36 out of 38 patents)

6.  Kenjiro Shimada (36 out of 36 patents)

7.  Kazuhiro Hatake (33 out of 33 patents)

8.  Masanori Ikari (33 out of 46 patents)

9.  Osamu Wakabayashi (32 out of 297 patents)

10.  Takeshi Kurihara (31 out of 31 patents)

11.  Masashi Ichihara (30 out of 31 patents)

12.  Takeshi Kamimae (30 out of 30 patents)

13.  Tadashi Kawaguchi (29 out of 43 patents)

14.  Koji Takeda (29 out of 41 patents)

15.  Masanori Tojima (28 out of 28 patents)


Core Competencies:
Excavation Machine
Hydraulic System
Control Method
Crawler-Type Work Machine
Unmanned Vehicle
Collision Avoidance
Work Site Management
Position Estimating System
Treatment Device
Calibration Device
Wear Resistant Component
Motor Grader

2,824 patents:

1. 12774579 - System and method for controlling work machine (2026-10-27),
2. 12769336 - Management system of workplace and method for managing workplace (2026-10-20),
3. 12768371 - Hydraulic valve and hydraulic circuit (2026-10-20),
4. 12768141 - Work machine (2026-10-20),
5. 12768138 - Activation system for work machine, activation method for work machine, and work machine (2026-10-20),
6. 12768136 - Control system, loading machine, and control method (2026-10-20),
7. 12767050 - System for displaying image around work vehicle, method, and work vehicle (2026-10-20),
8. 12762733 - Method for producing complementary model (2026-10-13),
9. 12760650 - Excavated matter conveyance system inside driftway (2026-10-13),
10. 12760498 - Electric excavator (2026-10-13),
11. 12759622 - Control system for work vehicle and control method for work vehicle (2026-10-13),
12. D1151736 - Cab for a construction machine (2026-10-06),
13. 12755537 - Foreign object recognition system (2026-10-06),
14. 12754016 - Management system for work vehicle, management method for work vehicle, and work vehicle (2026-10-06),
15. 12753582 - Work machine monitoring system and work machine monitoring method (2026-10-06),
Company Overview
Komatsu Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced work machine technology. The company focuses on a range of core technologies, including excavation machines, hydraulic systems, and control methods. Komatsu is also at the forefront of innovations in crawler-type work machines, unmanned vehicles, and collision avoidance systems. Their commitment to enhancing work site management and position estimating systems positions them as a leader in the construction and mining equipment industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Komatsu Corporation USPTO Patent Assignee Logo
2,824 Patents

#45 in Tokyo

#88 in Japan

#338 in the World

Tokyo, JP
Tokyo, Japan

Komatsu Corporation

Forward Citations = 19,853

2,148 inventors:

goldMedal Shigeru Yamamoto (56 out of 74 patents)

silverMedal Takemori Takayama (45 out of 48 patents)

bronzeMedal Tomohiro Nakagawa (39 out of 103 patents)

4.  Shuuji Hori (38 out of 38 patents)

5.  Eiji Ishibashi (36 out of 38 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Komatsu Corporation. Retrieved from https://idiyas.com/company/komatsu

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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