EE

Eiji Egawa

HC Hitachi Construction Machinery Co.: 9 patents #142 of 1,234Top 15%
Overall (All Time): #492,731 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12141723 Site management system Hiroshi Watanabe, Seiya Kato, Tsuyoshi Fujita, Masami KAMIBAYASHI 2024-11-12
11748826 Construction site management device and construction site management system Seiya Kato, Hiroshi Watanabe, Tsuyoshi Fujita 2023-09-05
9469969 Device and method for calculating basic information for area limiting excavation control, and construction machinery Yasuhiko Kanari, Akinori Ishii, Shuuichi MEGURIYA 2016-10-18
8585156 Travel control device for work vehicle and work vehicle Tsutomu Udagawa, Tsukasa Toyooka, Makoto Sugaya, Hideo Sorata, Tsuyoshi Nakamura +3 more 2013-11-19
7712565 HST travel system for working machine Tsutomu Udagawa, Akira Nakayama, Kazuo Takiguchi, Tsukasa Toyooka, Makoto Sugaya +1 more 2010-05-11
6101437 Operation control device for three-joint excavator Morio Oshina, Mitsuo Sonoda, Junji Tsumura 2000-08-08
6079131 Operation control device for three-joint type excavator Morio Oshina, Mitsuo Sonoda, Junji Tsumura 2000-06-27
5968104 Front control system for construction machine Kazuo Fujishima, Masakazu Haga, Hiroshi Watanabe 1999-10-19
5957989 Interference preventing system for construction machine Hiroshi Watanabe, Hiroyuki Adachi, Junichi Hosono, Toshiaki Nishida, Mitsuo Kihara +1 more 1999-09-28
5752333 Area limiting excavation control system for construction machines Takashi Nakagawa, Hiroshi Watanabe, Masakazu Haga, Kazuo Fujishima 1998-05-19