Masataka Fujinaga

This inventor holds 15 USPTO granted patents and 2 published patent applications and 5 EPO patents. Top assignees: Ube Industries, Inc., Ube Electronics, Ltd.. Active years: 1984-2018.

USPTO Granted Patents = 15 (Patent Applications = 2)

% Patents Active = 33.3

EPO Patents = 5 (Patent Applications = 12)

Average Co-Inventor Count = 3.7

ph-index = 3

Forward Citations = 94(Granted Patents)

Location History:

Mine, JP (2010)
Yamaguchi, JP (1998 - 2015)
Ube, JP (1984 - 2018)

Company Filing History:

Ube Electronics, Ltd.

patents

Years Active: 1984-2018

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10125313 - Oxynitride phosphor powder and method for producing same (2018-11-13),

2. 9828545 - (Oxy)nitride phosphor powder and method of producing same (2017-11-28),

3. 9777215 - Oxynitride phosphor powder (2017-10-03),

4. 9758720 - Oxynitride phosphor powder, silicon nitride powder for production of oxynitride phosphor powder, and production method of oxynitride phosphor powder (2017-09-12),

5. 9708533 - Wavelength conversion member and light-emitting device employing same (2017-07-18),

6. 9382477 - Oxynitride phosphor powder (2016-07-05),

7. 9085462 - Silicon nitride powder production method, silicon nitride powder, silicon nitride sintered body and circuit substrate using same (2015-07-21),

8. 9023241 - [object Object] (2015-05-05),

9. 9023240 - [object Object] (2015-05-05),

10. 8974698 - Production method of sialon-based oxynitride phosphor, and sialon-based oxynitride phosphor (2015-03-10),

11. 7696845 - Dielectric filter for base station communication equipment (2010-04-13),

12. 6885262 - Band-pass filter using film bulk acoustic resonator (2005-04-26),

13. 6599854 - Dielectric ceramic composition (2003-07-29),

14. 5827792 - Dielectric ceramic composition (1998-10-27),

15. 4444907 - Methacrylic acid production catalyst (1984-04-24),

Title: Masataka Fujinaga: Innovator in Oxynitride Phosphor Technology

Introduction

Masataka Fujinaga is a prominent inventor based in Ube, Japan. He has made significant contributions to the field of phosphor technology, particularly in the development of oxynitride phosphor powders. With a total of 15 patents to his name, Fujinaga's work has advanced the efficiency and effectiveness of phosphor materials used in various applications.

Latest Patents

Fujinaga's latest patents include innovative methods for producing oxynitride phosphor powders. One notable patent describes an oxynitride phosphor powder that exhibits a fluorescence peak wavelength of 587 to 630 nm, along with a high external quantum efficiency. The production method involves mixing silicon nitride powder with various sources of aluminum, calcium, and europium, followed by firing the mixture at temperatures between 1500 to 2000°C in an inert or reducing gas atmosphere. Another patent focuses on an (oxy)nitride phosphor powder with a fluorescence peak wavelength of 610 to 625 nm, which also boasts higher external quantum efficiency compared to conventional materials. This powder includes an α-type SiAlON and aluminum nitride, with specific compositional formulas to ensure optimal performance.

Career Highlights

Fujinaga has had a distinguished career, working with notable companies such as Ube Industries, Inc. and Ube Electronics, Ltd. His expertise in phosphor technology has positioned him as a key figure in the industry, contributing to advancements that enhance the performance of lighting and display technologies.

Collaborations

Throughout his career, Fujinaga has collaborated with talented individuals, including Shinsuke Jida and Takuma Sakai. These partnerships have fostered innovation and have been instrumental in the development of new technologies in the field of phosphors.

Conclusion

Masataka Fujinaga's contributions to the field of oxynitride phosphor technology have made a significant impact on the industry. His innovative patents and collaborations highlight his role as a leading inventor in this specialized area.