Norio Fujii

This inventor holds 11 USPTO granted patents. Top assignees: Rohm Co., Ltd., Teac Corporation. Active years: 1993-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norio Fujii. Retrieved from https://idiyas.com/inventor/norio-fujii

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

Calculating rank

USPTO Granted Patents = 11

% Patents Active = 63.6

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 51(Granted Patents)

Location History:

Ukyo-ku, JP (1996)
Kyoto, JP (1993 - 2010)

Company Filing History:

where one patent can have more than one assignee

Years Active: 1993-2010

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7723975 - Current detecting circuit (2010-05-25),

2. 7279942 - Differential current output unit (2007-10-09),

3. 7145327 - Rotational position detector and recording-reproducing unit utilizing the same (2006-12-05),

4. 6977535 - Differential current output unit (2005-12-20),

5. 6710568 - Motor drive device (2004-03-23),

6. 5523660 - Motor control circuit and motor drive system using the same (1996-06-04),

7. 5436583 - Timing signal generating circuit (1995-07-25),

8. 5345116 - IIL circuit and integrated circuit having the same (1994-09-06),

9. 5299277 - Flexible disk drive device (1994-03-29),

10. 5298840 - Motor control circuit and motor drive system using the same (1994-03-29),

11. 5220257 - Motor torque control circuit with barking control and motor drive system (1993-06-15),

Title: Norio Fujii: Innovator in Current Detection Technology

Introduction

Norio Fujii is a prominent inventor based in Kyoto, Japan, known for his significant contributions to current detection technology. With a total of 11 patents to his name, Fujii has developed innovative solutions that enhance the accuracy and efficiency of electronic circuits.

Latest Patents

Fujii's latest patents include a current detecting circuit that allows for indirect detection of current using a current mirror circuit. This invention achieves good accuracy while maintaining a compact circuit size. The current detection circuit features a current detection current mirror circuit, which includes an output current transistor that supplies an output current and a current detection transistor that provides a detection current proportional to the output current. A compensation current mirror circuit is integrated to equalize the collector voltages of both transistors, enabling accurate output current detection.

Another notable invention is the differential current output unit, which minimizes the number of capacitors and reduces chip area while providing a smoothly varying output current across a zero-crossing point. This unit is constructed entirely from differential circuits and current mirror circuits with predetermined current mirror ratios, ensuring stable output current characteristics.

Career Highlights

Throughout his career, Fujii has worked with reputable companies such as Rohm Co., Ltd. and Teac Corporation. His experience in these organizations has contributed to his expertise in developing advanced electronic components and systems.

Collaborations

Fujii has collaborated with notable colleagues, including Kenji Otani and Motoyasu Yoshino, further enhancing his innovative work in the field of electronics.

Conclusion

Norio Fujii's contributions to current detection technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of electronic systems and a commitment to improving their functionality.

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]