This inventor holds 4 USPTO granted patents. Top assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation. Active years: 2015-2025.
Location History:
- Kanagawa, JP (2015)
- Yokohama Kanagawa, JP (2020)
Company Filing History:
4 out of 53,240 
3 out of 1,696 Years Active: 2015-2025
Title: Ryuta Kumagai: Innovator in Magnetic Disk Technology
Introduction
Ryuta Kumagai is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 4 patents. His work focuses on improving data recording methods and enhancing the reliability of magnetic disk devices.
Latest Patents
Kumagai's latest patents include innovative designs for magnetic disk devices and their associated write methods. One notable patent describes a magnetic disk device that records data in a shingled-recording manner. This device performs sequential writing in a shingled-recording area, utilizing volatile memory to temporarily hold data before writing it to the target track. In the event of an unexpected power cut, the device ensures that unwritten data is stored in nonvolatile memory, thereby safeguarding data integrity.
Another significant patent outlines a magnetic disk device that includes heads and a controller. This controller divides the recording region into track groups of constant size, managing the writing of data efficiently. It assigns unique and logically consecutive numbers to the track groups, enhancing the organization and retrieval of data.
Career Highlights
Throughout his career, Ryuta Kumagai has worked with notable companies, including Kabushiki Kaisha Toshiba and Toshiba Electronic Devices & Storage Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in magnetic disk technology.
Collaborations
Kumagai has collaborated with talented individuals in the field, including Takahiro Shinbori and Takao Aoki. These partnerships have contributed to the advancement of his projects and the successful development of his patents.
Conclusion
Ryuta Kumagai's contributions to magnetic disk technology demonstrate his innovative spirit and commitment to enhancing data storage solutions. His patents reflect a deep understanding of the challenges in the field and offer practical solutions to improve data reliability and efficiency.