Fuji, Japan

Hiroo Watai

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1993-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroo Watai. Retrieved from https://idiyas.com/inventor/hiroo-watai

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 = 4.0

ph-index = 2

Forward Citations = 20(Granted Patents)


Location History:

  • Hadano, JP (1993)
  • Fuji, JP (1995 - 1998)

Company Filing History:


Years Active: 1993-1998

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3 patents (USPTO):Explore Patents

Title: Hiroo Watai: Innovator in Logic Circuit Design

Introduction

Hiroo Watai is a prominent inventor based in Fuji, Japan. He has made significant contributions to the field of logic circuit design, holding a total of 3 patents. His innovative methods have advanced the efficiency and effectiveness of circuit systems.

Latest Patents

Watai's latest patents include a "Logic Circuit Generating Method and Apparatus" and a "Logical Operation Method Employing Parallel Arithmetic Unit." The logic circuit generating method focuses on minimizing the fan-out count of cells or cell macros within a circuit system. This method transforms a Boolean expression into a two-branch tree, optimizing the assignment of cells to reduce loads on output nets. The logical operation method evaluates output data from a memory element based on a sequence of input values, utilizing a parallel arithmetic unit to enhance processing speed and efficiency.

Career Highlights

Hiroo Watai is currently employed at Hitachi, Ltd., where he continues to develop innovative solutions in logic circuit design. His work has been instrumental in improving high-speed logic and fault simulations, particularly for synchronous sequential circuits.

Collaborations

Watai has collaborated with notable colleagues, including Masahiko Nagai and Takaharu Nagumo, contributing to various projects that push the boundaries of technology in circuit design.

Conclusion

Hiroo Watai's contributions to logic circuit design exemplify the spirit of innovation. His patents and methods have significantly impacted the efficiency of circuit systems, showcasing his expertise and dedication to advancing technology.

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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