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Sumio Iijima — 35 Patents

Nec: 24 patents #376 of 14,502Top 3%

NTNational Institute Of Advanced Industrial Science And Technology: 10 patents #56 of 3,134Top 2%

JAJapan Science And Technology Agency: 7 patents #44 of 2,171Top 3%

DIDaikin Industries: 1 patents #1,764 of 2,957Top 60%

MUMeijo University: 1 patents #35 of 103Top 35%

JRJapanese Foundation For Cancer Research: 1 patents #37 of 125Top 30%

FNFuchita Nanotechnology: 1 patents #4 of 10Top 40%

JTJapan Science And Technology: 1 patents #225 of 836Top 30%

Overall (All Time): #96,288 of 4,157,543Top 3%

35 Patents All Time

Sumio Iijima has been granted 35 US patents while listed as an inventor at Nec. The first was granted in 1995 and the most recent in December 2025. Sumio Iijima ranks #96,288 of 4,157,543 US inventors in our database (top 2.3%). Patent records list Sumio Iijima in Miyoshi, MH, JP.

Patents per Year

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12486173	Production method for thin film of aligned carbon nanotube	Ryota Yuge	2025-12-02
12415729	Carbon nanotube separation method and separation apparatus	Ryota Yuge	2025-09-16
9399579	Substance-encapsulating carbon nanohorn aggregate and process for producing the same	Ryota Yuge, Masako Yudasaka, Toshinari Ichihashi	2016-07-26
9156699	Method for producing graphene, and graphene	Takatoshi Yamada, Jaeho Kim, Masatou Ishihara, Yoshinori Koga, Masataka Hasegawa	2015-10-13
9074278	Carbon film laminate	Masataka Hasegawa, Masatou Ishihara, Yoshinori Koga, Jaeho Kim, Kazuo Tsugawa	2015-07-07
8882970	Apparatus and method for manufacturing carbon nanohorns	Takeshi Azami, Daisuke Kasuya, Tsutomu Yoshitake, Yoshimi Kubo, Masako Yudasaka +1 more	2014-11-11
8835006	Carbon nanohorn carried material and process for producing carbon nanotube	Masako Yudasaka, Jin Miyawaki	2014-09-16
8501276	Carbon film	Yoshinori Koga, Masataka Hasegawa, Kazuo Tsugawa, Masatou Ishihara	2013-08-06
8329135	Aligned carbon nanotube bulk structure having portions different in density	Kenji Hata, Don N. Futaba, Motoo Yumura	2012-12-11
8318308	Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use	Kenji Hata, Motoo Yumura, Don N. Futaba	2012-11-27
8202505	Aligned carbon nanotube bulk aggregate, process for producing the same and uses thereof	Kenji Hata, Don N. Futaba, Motoo Yumura	2012-06-19
8202817	Nanocarbon aggregate and method for manufacturing the same	Ryota Yuge, Masako Yudasaka	2012-06-19
8178203	Aligned single-walled carbon nanotube aggregate, bulk aligned single-walled carbon nanotube aggregate, and powdered aligned single-walled carbon nanotube aggregate	Kenji Hata, Motoo Yumura, Don N. Futaba	2012-05-15
8119094	Fluorine storage material	Hidekazu Touhara, Yoshio Nojima, Tomohiro Isogai, Masako Yudasaka	2012-02-21
8114518	Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use	Kenji Hata, Motoo Yumura, Don N. Futaba	2012-02-14
8093174	Catalyst-supporting carbon nanohorn composite and process for producing same	Ryota Yuge, Masako Yudasaka	2012-01-10
8084505	Substance-containing carbon nanohorn composite having polyamine plug and process for producing the same	Ryota Yuge, Hideki Yorimitsu, Masako Yudasaka	2011-12-27
8007909	Carbon film	Yoshinori Koga, Masataka Hasegawa, Kazuo Tsugawa, Masatou Ishihara	2011-08-30
8007908	Single walled carbon nanohorn adsorptive material and method for production thereof	Katsuyuki Murata, Katsumi Kaneko, Masako Yudasaka	2011-08-30
7854991	Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use	Kenji Hata, Motoo Yumura, Don N. Futaba	2010-12-21
7803346	Method of selecting structure of carbon nanotube through photoirradiation	Masako Yudasaka, Minfang Zhang	2010-09-28
7537786	Complex of drug-carbon nanohorn and a process for producing the complex	Masako Yudasaka, Kumiko Ajima, Tatsuya Murakami, Kiyotaka Shiba	2009-05-26
7501024	Carbon nanohorn producing device and carbon nanohorn producing method	Takeshi Azami, Daisuke Kasuya, Tsutomu Yoshitake, Yoshimi Kubo, Masako Yudasaka	2009-03-10
7462462	Peptide capable of binding to nanographite structures	Kiyotaka Shiba, Daisuke Kase	2008-12-09
7384520	Method for manufacturing hybrid carbon nanotube	Shunji Bandow, Kazutomo Suenaga, Kaori Hirahara	2008-06-10