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For the Inventor, By the Inventor

Odawara, Japan

Junichi Iida

This inventor holds 10 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1990-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junichi Iida. Retrieved from https://idiyas.com/inventor/junichi-iida-rs050mjy

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

USPTO Granted Patents = 10

% Patents Active = 50.0

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 112(Granted Patents)


Location History:

  • Yokohama, JP (1990 - 1992)
  • Chigasaki, JP (1995)
  • Odawara, JP (2006 - 2015)

Company Filing History:

goldMedal10 out of 42,731 
 
Hitachi, Ltd.
 patents

Years Active: 1990-2015

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10 patents (USPTO):Explore Patents
1. 8972660 - Disk subsystem and data restoration method (2015-03-03),
2. 8190822 - Storage control unit and data management method (2012-05-29),
3. 7870338 - Flushing cached data upon power interruption (2011-01-11),
4. 7707357 - Storage control system and method having first and second channel control sections which convert file level data to block level data, judge whether block level data is to be stored in external storage and identifies save destination address of file level data based on metadata (2010-04-27),
5. 7337264 - Storage control system and method which converts file level data into block level data which is stored at different destinations based on metadata of files being managed (2008-02-26),
6. 7143228 - Storage control system and method for storing block level data in internal or external storage control system based on control information via networks (2006-11-28),
7. 7003553 - Storage control system with channel control device having data storage memory and transfer destination circuit which transfers data for accessing target cache area without passing through data storage memory (2006-02-21),
8. 5414681 - Focusing search circuit and focusing servo circuit which are used in (1995-05-09),
9. 5144609 - Apparatus for tracking an optical disc (1992-09-01),
10. 4951275 - Apparatus for tracking optical disk (1990-08-21),

Title: Innovations by Junichi Iida

Introduction

Junichi Iida is a prominent inventor based in Odawara, Japan. He has made significant contributions to the field of data management and storage systems. With a total of 10 patents to his name, Iida's work has had a substantial impact on technology.

Latest Patents

One of his latest patents is a disk subsystem and data restoration method. This innovation allows for a shortened rise time when the disk subsystem is restored. The method involves saving the shared memory management table to non-volatile memory along with cache data when the power is shut off. Upon restoration of power, the shared memory management table is referenced, and duplex data is assigned by two non-volatile memories, facilitating a smooth restoration process.

Another notable patent is a storage control unit and data management method. In this invention, an I/O processor determines if the amount of dirty data on a cache memory exceeds a threshold value. If it does, a portion of the dirty data is written to a storage device. Additionally, if a power source monitoring and control unit detects a voltage abnormality, it maintains power supply using battery power, allowing the processor to save dirty data to non-volatile memory.

Career Highlights

Junichi Iida is currently employed at Hitachi, Ltd., where he continues to innovate in the field of data management. His work has been instrumental in developing advanced storage solutions that enhance data reliability and efficiency.

Collaborations

Iida has collaborated with notable colleagues such as Hiroki Kanai and Keishi Tamura. Their combined expertise has contributed to the success of various projects and patents.

Conclusion

Junichi Iida's contributions to technology through his patents and innovations have made a lasting impact on data management systems. His work continues to influence the industry and pave the way for future advancements.

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]
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