Yoshito Yamakawa

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flood prevention device
- Patent number 10,787,780
- Issue date Sep 29, 2020
- Hitachi Zosen Corporation
- Yuichiro Kimura
- E04 - BUILDING
Information Patent Grant
Rotation bearing of flap gate and flap gate
- Patent number 10,697,144
- Issue date Jun 30, 2020
- Hitachi Zosen Corporation
- Yuichiro Kimura
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Door structure for floating flap gate
- Patent number 9,926,682
- Issue date Mar 27, 2018
- Hitachi Zosen Corporation
- Hiroaki Arai
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Floating flap gate
- Patent number 9,528,239
- Issue date Dec 27, 2016
- Hitachi Zosen Corporation
- Kyouichi Nakayasu
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Flap gate-type waterproof panel for wall installation
- Patent number 9,267,322
- Issue date Feb 23, 2016
- Hitachi Zosen Corporation
- Masaki Inui
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
FLOATING FLAP GATE APPARATUS
- Publication number 20210172138
- Publication date Jun 10, 2021
- Hitachi Zosen Corporation
- Toshiaki MORII
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
FLOOD PREVENTION DEVICE
- Publication number 20190390425
- Publication date Dec 26, 2019
- Yuichiro KIMURA
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
ROTATION BEARING OF FLAP GATE AND FLAP GATE
- Publication number 20190345684
- Publication date Nov 14, 2019
- HITACHI ZOSEN CORPORATION
- Yuichiro KIMURA
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
FLAP GATE-TYPE WATERPROOF PANEL FOR WALL INSTALLATION
- Publication number 20140230328
- Publication date Aug 21, 2014
- HITACHI ZOSEN CORPORATION
- Masaki Inui
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
DOOR STRUCTURE FOR FLOATING FLAP GATE
- Publication number 20140193202
- Publication date Jul 10, 2014
- HITACHI ZOSEN CORPORATION
- Hiroaki Arai
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
FLOATING FLAP GATE
- Publication number 20140140770
- Publication date May 22, 2014
- HITACHI ZOSEN CORPORATION
- Kyouichi Nakayasu
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING