Hirotsugu Kajihara

This inventor holds 16 USPTO granted patents and 6 published patent applications, primarily in Memory Systems. Top assignees: Kabushiki Kaisha Toshiba, Kioxia Corporation. Active years: 2010-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotsugu Kajihara. Retrieved from https://idiyas.com/inventor/hirotsugu-kajihara

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 16 (Patent Applications = 6)

% Patents Active = 62.5

Average Co-Inventor Count = 1.9

ph-index = 3

Forward Citations = 68(Granted Patents)

Location History:

Kanagawa, JP (2011 - 2012)
Yokohama, JP (2010 - 2024)

Company Filing History:

10 out of 53,286

Kabushiki Kaisha Toshiba

Years Active: 2010-2026

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Areas of Expertise:

Memory Accesses

Nonvolatile Memory

Garbage Collection

Wireless Communication

Power Transmission

Semiconductor Integrated Circuit

Synchronization Circuit

Control Method

Power Receiver

Radio Receiver

Hardware Engine

Gated Clock

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12710897 - MEMORY SYSTEM TRACKING MEMORY ACCESSES (2026-08-18),

2. 12645400 - Information processing system controlling first and second memory devices (2026-06-02),

3. 12499041 - Memory system limiting range of scan in garbage collection (2025-12-16),

4. 11977775 - Memory system (2024-05-07),

5. 11762597 - Memory system and control method controlling nonvolatile memory in accordance with command issued by processor (2023-09-19),

6. 11435952 - Memory system and control method controlling nonvolatile memory in accordance with command issued by processor (2022-09-06),

7. 9094051 - Power transmitter, power receiver and power transmission and reception system (2015-07-28),

8. 9020421 - Wireless communication device and wireless communication system (2015-04-28),

9. 8989653 - Power transmitter, power receiver and power transmission and reception system (2015-03-24),

10. 8719741 - Guarding logic inserting method based on gated clock enable signals (2014-05-06),

11. 8576964 - Radio receiver (2013-11-05),

12. 8536936 - Power source controller and semiconductor integrated circuit (2013-09-17),

13. 8214668 - Synchronizing circuit (2012-07-03),

14. 8078837 - Hardware engine control apparatus having hierarchical structure (2011-12-13),

15. 7818602 - Semiconductor integrated circuit device preventing logic transition during a failed clock period (2010-10-19),

Title: Hirotsugu Kajihara: Innovator in Memory Systems

Introduction

Hirotsugu Kajihara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of memory systems, holding a total of 16 patents. His innovative work has advanced the technology used in data storage and processing.

Latest Patents

Kajihara's latest patents include a sophisticated memory system that features a plurality of memory chips and controllers. This system is designed to optimize write operations by adjusting schedules among the memory controllers. Additionally, it incorporates a data encoding circuit that forms groups of divided data, enhancing the efficiency of data retrieval even when some memory chips are busy. Another notable patent involves a control method for nonvolatile memory, which utilizes update frequency information to manage command execution effectively.

Career Highlights

Throughout his career, Hirotsugu Kajihara has worked with leading companies in the technology sector. He has been associated with Kabushiki Kaisha Toshiba and Kioxia Corporation, where he has contributed to various innovative projects and developments in memory technology.

Collaborations

Kajihara has collaborated with notable colleagues such as Kiyoshi Toshimitsu and Toshiki Miyasaka. Their combined expertise has fostered advancements in memory systems and related technologies.

Conclusion

Hirotsugu Kajihara's contributions to memory systems have established him as a key figure in the field of technology. His innovative patents and collaborations continue to influence advancements in data storage solutions.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

6 patents pending: