Sumio Iijima

This inventor holds 36 USPTO granted patents and 5 published patent applications and 4 EPO patents, primarily in Carbon Nanotubes. Top assignees: Nec Corporation, National Institute of Advanced Industrial Science and Technology, Japan Science and Technology Agency. Active years: 1995-2025.

USPTO Granted Patents = 36 (Patent Applications = 5)

% Patents Active = 69.4

EPO Patents = 4 (Patent Applications = 3)

Average Co-Inventor Count = 3.0

ph-index = 10

Forward Citations = 508(Granted Patents)

Location History:

Aichi, JP (2005 - 2011)
Nagoya, JP (2007 - 2011)
Ibaraki, JP (2010 - 2013)
Tokyo, JP (1995 - 2014)
Tsukuba, JP (2015)
Minato-ku, JP (2012 - 2016)

Company Filing History:

National Institute of Advanced Industrial Science and Technology

patents

7 out of 1,328

Japan Science and Technology Agency

Daikin Industries, Ltd.

patents

6. 1 out of 6

Fuchita Nanotechnology Ltd.

patents

7. 1 out of 373

Japan Science and Technology Corporation

patents

8. 1 out of 57

Japanese Foundation for Cancer Research

Sii Nanotechnology Inc.

patents

where one patent can have more than one assignee

Years Active: 1995-2025

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Areas of Expertise:

Carbon Nanotube

Graphene Production

Separation Method

Nanocarbon Aggregate

Carbon Film Laminate

Single-Walled Carbon Nanotube

Carbon Nanohorn

Drug-Carbon Complex

X-Ray Analyzer

Catalyst-Supporting Composite

Hybrid Carbon Nanotube

Electric Double-Layer Capacitor

36 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12486173 - Production method for thin film of aligned carbon nanotube (2025-12-02),

2. 12415729 - Carbon nanotube separation method and separation apparatus (2025-09-16),

3. 9399579 - Substance-encapsulating carbon nanohorn aggregate and process for producing the same (2016-07-26),

4. 9156699 - Method for producing graphene, and graphene (2015-10-13),

5. 9074278 - Carbon film laminate (2015-07-07),

6. 8882970 - Apparatus and method for manufacturing carbon nanohorns (2014-11-11),

7. 8835006 - Carbon nanohorn carried material and process for producing carbon nanotube (2014-09-16),

8. 8501276 - Carbon film (2013-08-06),

9. 8329135 - Aligned carbon nanotube bulk structure having portions different in density (2012-12-11),

10. 8318308 - Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use (2012-11-27),

11. 8202817 - Nanocarbon aggregate and method for manufacturing the same (2012-06-19),

12. 8202505 - Aligned carbon nanotube bulk aggregate, process for producing the same and uses thereof (2012-06-19),

13. 8178203 - Aligned single-walled carbon nanotube aggregate, bulk aligned single-walled carbon nanotube aggregate, and powdered aligned single-walled carbon nanotube aggregate (2012-05-15),

14. 8119094 - Fluorine storage material (2012-02-21),

15. 8114518 - Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use (2012-02-14),

Title: Sumio Iijima: Pioneering Nanotechnology Inventor

Introduction: Sumio Iijima, a renowned inventor hailing from Tokyo, Japan, is widely recognized for his groundbreaking contributions to the field of nanotechnology.

Latest Patents: Sumio Iijima holds numerous patents in the field of nanotechnology, with his most recent inventions focusing on carbon nanotubes and their applications in various industries.

Career Highlights: Throughout his illustrious career, Sumio Iijima has conducted extensive research on nanomaterials, particularly carbon nanotubes, leading to significant advancements in materials science and technology.

Collaborations: Sumio Iijima has collaborated with leading scientists, researchers, and institutions worldwide to further explore the potential of nanotechnology, resulting in innovative solutions and discoveries.

Conclusion: Sumio Iijima's pioneering work in nanotechnology has not only revolutionized the field but has also paved the way for future innovations and technological advancements.