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For the Inventor, By the Inventor

Tokyo, Japan

Sumitomo Construction Machinery Co., Ltd.


USPTO Granted Patents = 71


Forward Citations = 21

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87 inventors (with patents filed for the assignee):

goldMedal Takashi Nishi (10 out of 15 patents)

silverMedal Ryuji Shiratani (9 out of 23 patents)

bronzeMedal Takeya Izumikawa (8 out of 34 patents)

4.  Hiroyuki Tsukamoto (7 out of 24 patents)

5.  Takashi Yamamoto (7 out of 40 patents)

6.  Tomoki Kurokawa (5 out of 6 patents)

7.  Hajime Aragaki (5 out of 7 patents)

8.  Youji Misaki (4 out of 10 patents)

9.  Takaaki Morimoto (3 out of 12 patents)

10.  Ryota Kurosawa (3 out of 7 patents)

11.  Nobuyuki Baba (3 out of 4 patents)

12.  Riichi Nishikawara (3 out of 3 patents)

13.  Kaoru Nakada (3 out of 3 patents)

14.  Keiichi Tsuji (3 out of 3 patents)

15.  Masaki Makino (2 out of 2 patents)


Core Competencies:
Excavator
Shovel
Construction System
Information Processing Apparatus
Work Machine
Asphalt Finisher
Display Device
Shovel Assist System
Road Machine
Shovel Diagnostic System
Control Device
Worksite Management

71 patents:

1. 12467232 - Excavator (2025-11-11),
2. 12460389 - Shovel and construction system (2025-11-04),
3. 12428809 - Shovel, controller for shovel, and method of managing worksite (2025-09-30),
4. 12428805 - Shovel (2025-09-30),
5. 12428804 - Shovel that performs control to avoid contact with surrounding object (2025-09-30),
6. 12385219 - Shovel (2025-08-12),
7. 12378751 - Shovel (2025-08-05),
8. 12371879 - Shovel and shovel diagnostic system (2025-07-29),
9. 12371861 - Asphalt finisher (2025-07-29),
10. 12366048 - Shovel and construction system (2025-07-22),
11. 12325980 - Display device, shovel, and information processing apparatus (2025-06-10),
12. 12320096 - Shovel and shovel assist system (2025-06-03),
13. 12312773 - Excavator (2025-05-27),
14. 12305366 - Shovel (2025-05-20),
15. 12305356 - Shovel (2025-05-20),
Sumitomo Construction Machinery Co., Ltd. is a leading manufacturer of construction machinery with a global presence. The company offers a wide range of products including excavators, wheel loaders, cranes, and more. With a focus on innovation and quality, Sumitomo Construction Machinery is dedicated to providing reliable and efficient solutions for the construction industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

71 Patents

#576 in Tokyo

#1,361 in Japan

#10,065 in the World

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Tokyo, Japan

Sumitomo Construction Machinery Co., Ltd.

Forward Citations = 21

87 inventors:

goldMedal Takashi Nishi (10 out of 15 patents)

silverMedal Ryuji Shiratani (9 out of 23 patents)

bronzeMedal Takeya Izumikawa (8 out of 34 patents)

4.  Hiroyuki Tsukamoto (7 out of 24 patents)

5.  Takashi Yamamoto (7 out of 40 patents)

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