Kodaira, Japan

Tsutomu Hayashi

This inventor holds 5 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.. Active years: 1983-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Hayashi. Retrieved from https://idiyas.com/inventor/tsutomu-hayashi-4hi1vx8i

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 4

Forward Citations = 48(Granted Patents)


Location History:

  • Hitachi, JP (1983 - 1989)
  • Koganei, JP (1997)
  • Kodaira, JP (1997 - 1998)

Company Filing History:


Years Active: 1983-1998

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5 patents (USPTO):Explore Patents

Title: Tsutomu Hayashi: Innovator in Microcomputer Technology

Introduction

Tsutomu Hayashi is a notable inventor based in Kodaira, Japan, with a remarkable portfolio consisting of five patents. His work has significantly contributed to the field of microcomputers, particularly in enhancing the efficiency and capability of CPU architecture.

Latest Patents

Among his latest innovations is the patent for a "Single-chip microcomputer having an expandable address area." This invention adds expansion registers E0 to E7 to the existing general registers R0 to R7 found in an 8-bit CPU. By implementing this design, all registers, including the newly incorporated expansion registers, can be comprehensively understood as address data for accessing memory. The innovation allows for more efficient processing by executing address operations as a single unit, facilitating both the carry and borrow in address handling. The expansion registers, specifically aimed at address generation, result in a reduction of executable instruction types, which ultimately helps manage the logical and physical scales of the CPU without compromising processing capabilities. Notably, this register can be utilized entirely or in parts, making it adaptable for various hardware or software applications, expanding the address space effortlessly.

Career Highlights

Tsutomu Hayashi has made significant strides in his career, particularly during his tenure at renowned companies such as Hitachi Ltd. and Hitachi Engineering Co., Ltd. His experiences in these organizations have shaped his innovative outlook, contributing to his impressive patent portfolio.

Collaborations

Throughout his journey as an inventor, Hayashi has worked alongside esteemed colleagues, including Naoki Mitsuishi and Shiro Baba. These collaborations have fostered an environment rich in knowledge exchange and creativity, further enhancing the innovative output of their collective efforts.

Conclusion

In conclusion, Tsutomu Hayashi stands out as an influential inventor in the realm of microcomputers. His latest patent showcases his ingenuity and dedication to improving CPU architecture, thereby affirming his impact on the technological landscape. With his remarkable career and collaborations, Hayashi continues to inspire future generations of inventors and innovators.

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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