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USPTO Data Jan 1 1976 - Jan 6 2026
118 Patents
#439 in Tokyo
#995 in Japan
#6,551 in the World
Sumitomo(s.h.i.) Construction Machinery Co., Ltd.
Forward Citations = 274
56 inventors:
Sumitomo(s.h.i.) Construction Machinery Co., Ltd.
Forward Citations = 274
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56 inventors (with patents filed for the assignee):
Takeya Izumikawa (26 out of 35 patents)
Hiroyuki Tsukamoto (17 out of 24 patents)
Kiminori Sano (16 out of 19 patents)
4. Ryuji Shiratani (14 out of 23 patents)
5. Hideto Magaki (14 out of 14 patents)
6. Jitsutaka Takeo (12 out of 15 patents)
7. Takaaki Morimoto (9 out of 12 patents)
8. Youji Misaki (6 out of 10 patents)
9. Takashi Nishi (5 out of 15 patents)
10. Hirofumi Hashimoto (5 out of 5 patents)
11. Ryota Kurosawa (4 out of 7 patents)
12. Makoto Yanagisawa (4 out of 24 patents)
13. Hideaki Kanbayashi (3 out of 5 patents)
14. Kyoko Takanashi (3 out of 3 patents)
15. Sou Sakuta (3 out of 5 patents)
Core Competencies:
Vehicle Shovel
Excavator
Construction Machine
Display Device
Surroundings Monitoring System
Hybrid Construction Machine
Shovel Management Apparatus
Autonomous Aerial Vehicle
Measurement Device
Control Valve
Boom Raising Assistance
Work Machine
118 patents:
Sumitomo (S.H.I.) Construction Machinery Co., Ltd. is a Japanese company specializing in the manufacture, sale, and service of construction machinery. They provide a wide range of products including hydraulic excavators, crawler cranes, wheel loaders, and road paving machinery. With their commitment to delivering high-quality and innovative machines, Sumitomo has become a trusted global leader in the construction equipment industry.
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