Yukiko Nakajima

This inventor holds 28 USPTO granted patents and 3 published patent applications, plus 2 CIPO patents and 5 EPO patents, primarily in Toner Development. Top assignees: Ricoh Company, Ltd., Kumiai Chemical Industry Co., Ltd.. Active years: 2013-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yukiko Nakajima. Retrieved from https://idiyas.com/inventor/yukiko-nakajima

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

USPTO Granted Patents = 28 (Patent Applications = 3)

% Patents Active = 42.9

CIPO Patents = 2

EPO Patents = 5 (Patent Applications = 2)

Average Co-Inventor Count = 7.2

ph-index = 3

Forward Citations = 36(Granted Patents)

Location History:

Numazu, JP (2013 - 2014)
Shizuoka, JP (2014 - 2015)
Kanagawa, JP (2014 - 2017)
Tokyo, JP (2018)

Company Filing History:

Kumiai Chemical Industry Co., Ltd.

patents

Years Active: 2013-2018

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Areas of Expertise:

Agrochemical Composition

Image Forming Apparatus

Electrophotographic Toner

Developer

Toner Container

Temperature Detector

Color Toner Set

Development Agent

Process Cartridge

Resin for Toner

Fixing Device

Block Copolymer

28 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10091999 - Agrochemical composition for foliage treatment (2018-10-09),

2. 9720339 - Toner, developer using the toner, image forming apparatus (2017-08-01),

3. 9519235 - Toner, developer using the toner, image forming apparatus (2016-12-13),

4. 9310735 - Fixing device and image forming apparatus having temperature detector (2016-04-12),

5. 9223268 - Fixing device, belt device, and image forming apparatus (2015-12-29),

6. 9141013 - Electrophotographic toner, developer containing the toner, and image forming apparatus (2015-09-22),

7. 9134638 - Toner, developer using the toner, image forming apparatus (2015-09-15),

8. 9128397 - Resin for use in toner, toner using the resin, developer using the toner, image forming apparatus and method using the toner, and method of manufacturing resin (2015-09-08),

9. 9127118 - Resin for toner, toner using the resin, and development agent using the toner (2015-09-08),

10. 9012116 - Toner and developer (2015-04-21),

11. 9005859 - Colorless transparent toner, toner set, development agent, image forming apparatus, and printed matter (2015-04-14),

12. 8951707 - Toner, developer and image forming apparatus (2015-02-10),

13. 8951705 - Development agent and image forming apparatus employing same (2015-02-10),

14. 8932790 - Toner, developer including the toner, image forming apparatus using the toner, and block copolymer (2015-01-13),

15. 8883385 - Toner, development agent, and image forming apparatus using the same (2014-11-11),

Title: Yukiko Nakajima: Innovator in Toner Technology

Introduction

Yukiko Nakajima is a prominent inventor based in Kanagawa, Japan, known for her significant contributions to the field of imaging technology. With a remarkable portfolio of 27 patents, Nakajima has made strides in the development of advanced toner formulations and image forming apparatuses. Her work has greatly influenced the efficiency and quality of printing technologies.

Latest Patents

Among her latest patents, Nakajima has developed groundbreaking toner compositions and related technologies. One key patent features a toner that incorporates at least a crystalline resin as a binder. Notably, this toner displays a tetrahydrofuran soluble content that includes 5.0% or more as a peak area of a component with a molecular weight of 100,000 or greater. The weight-average molecular weight of this component falls within the range of 20,000 to 60,000, showcasing Nakajima's innovative approach to improving toner performance in various imaging applications.

Career Highlights

Yukiko Nakajima currently works at Ricoh Company, Ltd., a respected leader in imaging and electronics solutions. Her extensive experience and innovative mindset have positioned her as a key player within the company, contributing to its advancements in printing technology and image quality. Through her patents, she has demonstrated a deep understanding of the materials and processes that enhance the efficiency of imaging devices.

Collaborations

In her endeavors, Nakajima collaborates with esteemed colleagues, including Akiyoshi Sabu and Masahide Yamada. Together, they form a dynamic team that pushes the boundaries of toner and image forming technologies, ensuring continuous innovation and excellence in the field.

Conclusion

Yukiko Nakajima's contributions to the toner technology landscape underscore her talent and dedication as an inventor. With her impressive array of patents and collaborative spirit at Ricoh Company, Ltd., Nakajima continues to influence the future of imaging technologies, enhancing the way we interact with printing solutions.

Profile summary based on public USPTO records.