Kawasaki, Japan

Katsuji Hirochi

This inventor holds 3 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1987-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuji Hirochi. Retrieved from https://idiyas.com/inventor/katsuji-hirochi

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


% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 3

Forward Citations = 13(Granted Patents)


Location History:

  • Yokohama, JP (1987)
  • Kawasaki, JP (1989)

Company Filing History:


Years Active: 1987-1989

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3 patents (USPTO):Explore Patents

Title: Katsuji Hirochi: Innovator in Semiconductor Technology

Introduction

Katsuji Hirochi is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on enhancing the performance and reliability of integrated circuits.

Latest Patents

One of Hirochi's latest patents is a Schmitt circuit for semiconductor integrated circuits. This innovation allows for the selection of resistances from a plurality of options to achieve desired threshold voltages. By selecting specific electrodes for wiring connections, the Schmitt circuits can exhibit different threshold voltages, enhancing their functionality in various applications.

Another significant patent is related to a transistor-transistor logic (TTL) circuit. This circuit design includes multiple input terminals and an output transistor, with elements that are operatively connected to manage signal propagation delay times. This design prevents overshoot, ringing, or noise, while optimizing output characteristics based on the load being driven by the TTL circuit.

Career Highlights

Katsuji Hirochi is currently employed at Fujitsu Corporation, where he continues to innovate in the semiconductor field. His work has been instrumental in advancing the capabilities of integrated circuits, making them more efficient and reliable.

Collaborations

Hirochi has collaborated with notable coworkers such as Yoshiki Shimauchi and Takahiro Kato. Their combined expertise has contributed to the successful development of various technologies in the semiconductor industry.

Conclusion

Katsuji Hirochi's contributions to semiconductor technology through his patents and work at Fujitsu Corporation highlight his role as a key innovator in the field. His advancements in circuit design continue to influence the development of more efficient electronic 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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