Masanori Fujisawa

This inventor holds 37 USPTO granted patents, primarily in Organic EL Technology. Top assignees: Rohm Co., Ltd., Nec Corporation. Active years: 1995-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masanori Fujisawa. Retrieved from https://idiyas.com/inventor/masanori-fujisawa

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

Calculating rank

USPTO Granted Patents = 37

% Patents Active = 81.1

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 268(Granted Patents)

Location History:

Ukyo-ku, JP (1998)
Kyoto, JP (1995 - 2011)

Company Filing History:

where one patent can have more than one assignee

Years Active: 1995-2011

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Areas of Expertise:

Organic EL Circuit

Display Device

D/A Converter

Active Matrix Panel

Reference Current Generator

Audio Signal Amplifier

Piezoelectric Transformer

Power Amplifier

Integrated Circuit Development

Non-Contact Communication

Regulated Power Supply

IC Card Display

37 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7876297 - Organic EL drive circuit with a D/A converter circuit and organic EL display device using the same (2011-01-25),

2. 7688289 - Organic EL driver circuit and organic EL display device (2010-03-30),

3. 7586469 - Organic EL drive circuit and organic EL display device using the same organic EL drive circuit (2009-09-08),

4. 7471050 - Organic EL drive circuit and organic EL display device (2008-12-30),

5. 7456767 - D/A converter circuit, organic EL drive circuit, and organic EL display (2008-11-25),

6. 7446737 - Organic EL panel driving circuit, organic EL display device and organic EL panel driving circuit inspecting device (2008-11-04),

7. 7400097 - Organic EL display device (2008-07-15),

8. 7372439 - Reference current generator circuit of organic EL drive circuit, organic EL drive circuit and organic EL display device (2008-05-13),

9. 7243311 - Method and apparatus for supporting development of integrated circuit and a transactional business method involving contracting and licensing (2007-07-10),

10. 7129916 - Organic EL element drive circuit and organic EL display device using the same drive circuit (2006-10-31),

11. 7119769 - Active matrix type organic EL panel drive circuit and organic EL display device (2006-10-10),

12. 7109966 - Display element drive circuit and display device (2006-09-19),

13. 7109953 - Drive circuit of active matrix type organic EL panel and organic EL display device using the same drive circuit (2006-09-19),

14. 7098905 - Active matrix type organic EL panel drive circuit and organic EL display device (2006-08-29),

15. 7084577 - Organic EL element drive circuit and organic EL display device using the same drive circuit (2006-08-01),

Title: The Innovations of Masanori Fujisawa

Introduction:

Masanori Fujisawa, a prominent inventor based in Kyoto, Japan, has made significant contributions to the field of electronics and display technology. With an impressive portfolio of 37 patents, Fujisawa is recognized for his innovative designs and solutions that enhance the functionality and efficiency of organic Electroluminescent (EL) displays.

Latest Patents:

Among his latest patents are the organic EL drive circuit with a D/A converter circuit and the organic EL display device utilizing this technology. These inventions aim to prevent screen sticking issues in organic EL panels by reducing the output current of relatively high withstand voltage transistors within the D/A converter circuit. This innovative approach allows for the connection of multiple high-voltage transistors, effectively reducing the circuit's area while maintaining optimal performance. The design incorporates low withstand voltage transistors as output side components, further enhancing the reliability and efficiency of the display device.

Career Highlights:

Fujisawa's career boasts significant tenures at notable companies, including Rohm Co., Ltd. and NEC Corporation. His work in these organizations has been instrumental in driving forward-looking innovations in electronic circuits and display technologies, paving the way for advancements in consumer electronics.

Collaborations:

Throughout his illustrious career, Fujisawa has collaborated with esteemed colleagues such as Shinichi Abe and Jun Maede. These partnerships have fostered a creative environment that has contributed to the success of his innovative projects, leading to breakthroughs in organic EL technology.

Conclusion:

Masanori Fujisawa's contributions to organic EL displays and driving circuits underscore his status as a visionary inventor in the electronics industry. His patents reflect a commitment to advancing display technologies and improving user experience in electronic devices. As he continues to innovate, Fujisawa's work will undoubtedly inspire future generations of inventors and engineers.

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]