Hiroki Yamada

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Communication device, surveillance server, and log collection method
- Patent number 12,021,681
- Issue date Jun 25, 2024
- Hitachi Industrial Equipment Systems Co., Ltd.
- Hiroki Yamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Computer system, method for estimating radio wave propagation chara...
- Patent number 11,133,880
- Issue date Sep 28, 2021
- Hitachi, Ltd.
- Hiroki Yamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock recovery circuit with memory storage level comparison with hi...
- Patent number 5,274,681
- Issue date Dec 28, 1993
- NEC Corporation
- Hiroki Yamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Communication System, Management Device, and Terminal
- Publication number 20240378106
- Publication date Nov 14, 2024
- HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Ryo NAKANO
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Information Processing Device, Information Processing System, and U...
- Publication number 20240036888
- Publication date Feb 1, 2024
- HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Hiroki YAMADA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Communication Device, Surveillance Server, and Log Collection Method
- Publication number 20230047615
- Publication date Feb 16, 2023
- HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Hiroki YAMADA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMPUTER SYSTEM, METHOD FOR ESTIMATING RADIO WAVE PROPAGATION CHARA...
- Publication number 20200235835
- Publication date Jul 23, 2020
- Hitachi, Ltd
- Hiroki YAMADA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE