Masayuki Ishii

USPTO Granted Patents = 41 (Patent Applications = 11)

CIPO Patents = 2

EPO Patents = 6 (Patent Applications = 3)

Average Co-Inventor Count = 3.1

ph-index = 11

Forward Citations = 404(Granted Patents)

Location History:

Hyogo, JP (1988)
Itami, JP (1986 - 2000)
Numazu, JP (2007 - 2012)
Shizuoka-ken, JP (2008 - 2015)
Shizuoka, JP (2014 - 2022)

Company Filing History:

Sumitomo Electric Industries, Limited

patents

1 out of 232

Director-general of Agency of Industrial Science and Technology

patents

Years Active: 1986-2025

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41 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12429786 - Electronic device and method for producing the same, image forming method, and image forming apparatus (2025-09-30),

2. 11281118 - Toner, toner accommodating container, developer, developing device, process cartridge, image forming apparatus, and image forming method (2022-03-22),

3. 11036156 - Toner, developer, toner stored unit, image forming apparatus, image forming method, and printed matter producing method (2021-06-15),

4. 11036152 - Toner, image forming method, image forming apparatus, and process cartridge (2021-06-15),

5. 10754270 - Toner, production method of toner, image forming method, image forming apparatus, and process cartridge (2020-08-25),

6. 9182695 - External additive for toner, toner covered with external additive, development agent, toner container, and image forming apparatus (2015-11-10),

7. 9176409 - Toner, development agent, toner container, and image forming apparatus (2015-11-03),

8. 8927186 - Toner, and developer, image forming method and process cartridge using the toner (2015-01-06),

9. 8778583 - Toner, developer, image forming apparatus, and process cartridge (2014-07-15),

10. 8652721 - Toner, developer, and method of manufacturing toner (2014-02-18),

11. 8105743 - Fine organic silicone particle for latent electrostatic image developing toners, external additive for toners, toner for developing latent electrostatic image, and two-component developer (2012-01-31),

12. 8084181 - Carrier and method for producing the same, developer and image forming method (2011-12-27),

13. 8076051 - Method for preparing resin and particulate material, toner prepared by the method, developer including the toner, toner container, and process cartridge, image forming method and apparatus using the developer (2011-12-13),

14. 8043785 - Carrier, method for producing the same, developer, and image forming method (2011-10-25),

15. 7803508 - Toner as well as developer and image forming method using the same (2010-09-28),

Title: **Masayuki Ishii: Innovator in Toner Technology**

Introduction

Masayuki Ishii, an accomplished inventor based in Numazu, Japan, has made significant contributions to the field of imaging technology through his innovative work at Ricoh Company, Ltd. With a remarkable portfolio of 28 patents, Ishii's inventions have greatly enhanced the efficiency and performance of toner products.

Latest Patents

Ishii's latest patents showcase his expertise in toner technology and image formation methods. One of his notable inventions involves a toner formula that includes base particles and external additives. The base particles consist of a binder resin and a colorant, while the external additives incorporate various fluorine-containing compounds such as aluminum hydroxide, boehmite, and pseudoboehmite. Additionally, Ishii has developed toner particles with precise characteristics, wherein a specific percentage of particles retains a high average circularity, contributing to superior toner performance.

Career Highlights

Throughout his career at Ricoh Company, Ltd., Ishii has focused on pushing the boundaries of imaging solutions. His work has not only led to significant advancements in toner formulations but has also addressed industry needs for more effective and efficient image forming apparatuses and processes.

Collaborations

Masayuki Ishii has collaborated with fellow innovators Chiaki Tanaka and Satoshi Mochizuki, showcasing a team-oriented approach in developing cutting-edge technologies in the imaging sector. Their collective efforts have resulted in patents that continue to influence various applications in printing and copying technologies.

Conclusion

Masayuki Ishii stands out as a key innovator in the toner technology landscape. His dedication to research and development at Ricoh Company, Ltd. has resulted in numerous patents that enhance the functionality and efficiency of imaging equipment. As technology continues to evolve, Ishii's contributions will undoubtedly play a pivotal role in shaping the future of imaging solutions.

This text is generated by artificial intelligence and may not be accurate.