Hitachi, Japan

Ryo Fujita

This inventor holds 45 USPTO granted patents and 2 published patent applications, primarily in Graphic Processing. Top assignees: Hitachi, Ltd., Hitachi Ulsi Engineering Corp., Renesas Technology Corp.. Active years: 1987-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryo Fujita. Retrieved from https://idiyas.com/inventor/ryo-fujita

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

USPTO Granted Patents = 45 

% Patents Active = 77.8

Average Co-Inventor Count = 4.5

ph-index = 13

Forward Citations = 533(Granted Patents)


Location History:

  • Ibaraki-ken, JP (1999)
  • Tokai-mura, JP (1998 - 2001)
  • Hitachi, JP (1987 - 2015)

Company Filing History:


Years Active: 1987-2015

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Areas of Expertise:
Graphic Processing
Semiconductor IC
Memory Management
Rendering Processor
Graphics System
Image Composing
Cache Evictions
Electron Beam
Graphics Processor
Three-Dimensional Display
Special Purpose Memory
Video Signal Conversion
45 patents (USPTO):Explore Patents

Title: Ryo Fujita: Innovator in Memory Management Technologies

Introduction

Ryo Fujita is a notable inventor based in Hitachi, Japan, recognized for his significant contributions to memory management technologies. With 45 patents to his name, Fujita has been instrumental in advancing the performance and longevity of storage devices through innovative methodologies.

Latest Patents

Ryo Fujita's latest patents focus on memory management methods, storage devices, and computers that utilize non-volatile memory. One patent details a storage device that comprises both non-volatile and volatile memory, along with a memory controller. The unique aspect of this invention involves a free block management table and a worn block management table. The memory controller determines the status of memory blocks based on the number of available free blocks and errors detected, appropriately registering blocks in the worn block management table when necessary.

Another patent involves a storage device that employs non-volatile semiconductor memory to enhance performance and durability. This innovation classifies physical blocks into three distinct types: scratch blocks, data blocks, and erased blocks. The process of data writing, management, and reallocation of blocks based on their status is elaborately defined, allowing for efficient memory usage and long-term reliability.

Career Highlights

Fujita has worked with esteemed companies such as Hitachi, Ltd., where he has pioneered numerous advancements in storage technology. His work is characterized by a profound understanding of memory management systems and an ability to innovate within the semiconductor space.

Collaborations

Throughout his career, Ryo Fujita has collaborated with several prominent figures in the industry, including Kazuyoshi Koga and Yasushi Fukunaga. These partnerships have played a vital role in enhancing his research and have contributed to the development of novel solutions in memory technology.

Conclusion

Ryo Fujita stands out as a distinguished inventor whose work in memory management has influenced the way storage devices operate today. With a portfolio of 45 patents, his innovative spirit continues to drive advancements in technology, paving the way for future developments in memory systems and devices.

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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