Ryuta KUMAGAI

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic disk device and write method
- Patent number 12,300,278
- Issue date May 13, 2025
- Kabushiki Kaisha Toshiba
- Takao Aoki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device and recording method of the same
- Patent number 10,872,040
- Issue date Dec 22, 2020
- Kabushiki Kaisha Toshiba
- Takahiro Shinbori
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Magnetic disk device and recording method of the same
- Patent number 10,592,423
- Issue date Mar 17, 2020
- Kabushiki Kaisha Toshiba
- Takahiro Shinbori
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information recording device and data recovery method
- Patent number 9,105,297
- Issue date Aug 11, 2015
- Kabushiki Kaisha Toshiba
- Ryuta Kumagai
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC DISK DEVICE AND WRITE METHOD
- Publication number 20250061919
- Publication date Feb 20, 2025
- Kabushiki Kaisha Toshiba
- Takao AOKI
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC DISK DEVICE AND RECORDING METHOD OF THE SAME
- Publication number 20200174941
- Publication date Jun 4, 2020
- Kabushiki Kaisha Toshiba
- Takahiro Shinbori
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MAGNETIC DISK DEVICE AND RECORDING METHOD OF THE SAME
- Publication number 20190286568
- Publication date Sep 19, 2019
- Kabushiki Kaisha Toshiba
- Takahiro Shinbori
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INFORMATION RECORDING DEVICE AND DATA RECOVERY METHOD
- Publication number 20150062739
- Publication date Mar 5, 2015
- Kabushiki Kaisha Toshiba
- Ryuta KUMAGAI
- G11 - INFORMATION STORAGE