Haruo Keida

This inventor holds 11 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Microcomputer Engineering, Ltd.. Active years: 1976-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Haruo Keida. Retrieved from https://idiyas.com/inventor/haruo-keida

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 6

Forward Citations = 106(Granted Patents)

Location History:

Kodaira, JA (1976)
Tokorozawa, JP (1990 - 1996)

Company Filing History:

Hitachi Microcomputer Engineering, Ltd.

patents

where one patent can have more than one assignee

Years Active: 1976-1996

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5581698 - Semiconductor integrated circuit device with test mode for testing CPU (1996-12-03),

2. 5497482 - Data processor in which external sync signal may be selectively inhibited (1996-03-05),

3. 5493686 - Data processor in which external sync signal may be selectively inhibited (1996-02-20),

4. 5247521 - Data processor (1993-09-21),

5. 5228139 - Semiconductor integrated circuit device with test mode for testing CPU (1993-07-13),

6. 5179694 - Data processor in which external sync signal may be selectively inhibited (1993-01-12),

7. 5142536 - Data processor (1992-08-25),

8. 4989208 - Data processor (1991-01-29),

9. 4975593 - Microcomputer with synchronized data transfer (1990-12-04),

10. 4967352 - Data processor in which external sync signal may be selectively inhibited (1990-10-30),

11. 3991326 - MISFET switching circuit for a high withstand voltage (1976-11-09),

Title: Haruo Keida: A Pioneer in Semiconductor Innovations

Introduction

Haruo Keida, an esteemed inventor based in Tokorozawa, Japan, has significantly contributed to the field of semiconductor technology. With a remarkable portfolio of 11 patents, he has established himself as a leading innovator in the intricate world of integrated circuit devices and microcomputers.

Latest Patents

Among his latest inventions is a semiconductor integrated circuit device that incorporates a test mode for CPU evaluation. This invention features an output gate that can selectively output individual signals to an internal bus, enabling innovative interchanges among various functional modules connected to the bus. Additionally, he has developed a data processor that allows for the selective inhibition of an external sync signal. This technology allows the external sync signal, necessary for external expansion, to be effectively controlled in single-chip mode, reducing noise and power consumption through an intelligent integration of control gates and signals.

Career Highlights

Haruo Keida has had an impressive career, having worked with renowned companies such as Hitachi, Ltd. and Hitachi Microcomputer Engineering, Ltd. His time in these organizations has been marked by significant contributions to the development of advanced microcomputing solutions and semiconductor applications.

Collaborations

Throughout his career, Keida has collaborated with numerous talented colleagues, including Takashi Tsukamoto and Nobutaka Nagasaki. These partnerships have facilitated the exchange of innovative ideas and expertise, which have been instrumental in the execution of groundbreaking projects.

Conclusion

Haruo Keida's accomplishments as an inventor reflect his dedication to advancing semiconductor technology. His patents not only showcase his technical prowess but also his commitment to fostering innovation in the electronics field. With a legacy of impactful inventions and collaborations, Keida continues to inspire future generations of inventors and engineers in their pursuit of technological 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]