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USPTO Patent Rankings Data through Dec 31, 2025
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Sumio Okuno — 23 Patents

Hitachi: 23 patents #1,433 of 28,497Top 6%
SISumitomo Light Metal Industries: 2 patents #54 of 254Top 25%
Kudamatsu, JP: #17 of 290 inventorsTop 6%
Overall (All Time): #178,160 of 4,157,543Top 5%
23 Patents All Time
Sumio Okuno has been granted 23 US patents while listed as an inventor at Hitachi. The first was granted in 1985 and the most recent in May 2005. Sumio Okuno ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list Sumio Okuno in Kudamatsu, JP.

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6886474 Railway car Takahisa Yamamoto, Toshiaki Makino, Yoshihiko Ina 2005-05-03 $93,000
6871599 Railway car Kazufumi Yamaji, Kentaro Masai 2005-03-29 $111,000
6722285 Railway car Hideyuki Nakamura, Toshiaki Makino, Toshiaki Sagawa 2004-04-20 $259,000
6712007 Railway car Takahisa Yamamoto, Toshiaki Makino, Yoshihiko Ina 2004-03-30 $280,000
6582832 Hollow-shaped material Takeshi Kawasaki, Toshiaki Makino 2003-06-24 $113,000
6550397 Car body Takeshi Kawasaki, Toshiaki Makino, Kentaro Masai, Kazufumi Yamaji 2003-04-22 $117,000
6394000 Car body Takeshi Kawasaki, Toshiaki Makino, Kentaro Masai, Kazufumi Yamaji 2002-05-28 $184,000
5480729 Honeycomb panel having inserts for fixing a member in an opening in the panel Morishige Hattori, Mamoru Ohara, Koichiro Okuto, Hiroshi Irie 1996-01-02 $121,000
5439415 Rolling stock ventilator and its control method Haruo Hirikawa, Shinichiroo Ishikawa, Morishige Hattori, Masakazu Matsumoto 1995-08-08 $105,000
5353502 Method of producing a honeycomb panel insert for fixing a member in an opening Morishige Hattori, Mamoru Ohara, Koichiro Okuto, Hiroshi Irie 1994-10-11 $120,000
5287814 Car body of railway rolling stock and method for fabricating car body Kentaro Masai, Seiichi Okamoto, Keiji Ohmura 1994-02-22 $157,000
5267515 Vehicle body construction having longitudinally elongated extruded panels and continuous welds joining the panels Hitoshi Tsuruda, Morishige Hattori, Masato Okazaki, Hiroyuki Yamada, Kiyotaka Kikumoto +2 more 1993-12-07 $114,000
5199632 Railway car body structures and methods of making them Michifumi Takeichi, Masato Okazaki, Morishige Hattori 1993-04-06 $48,000
5188039 Method of fixing inside panel of car and structure for fixing the same Keiji Ohmura, Kentaro Masai, Hideshi Ooba, Senzoo Hida, Seiichi Okamoto 1993-02-23 $29,000
5140913 Railway car body structures Michifumi Takeichi, Masato Okazaki, Morishige Hattori 1992-08-25 $39,000
5113769 Car body for railway rolling stock and method for fabricating car body Michifumi Takeichi, Keiji Ohmura, Msato Okazaki, Hitoshi Tsuruda, Hiroyuki Yamada +2 more 1992-05-19 $32,000
5109777 Car body for railway rolling stock with joggled adjacent side sheet end construction for smooth exterior Keiji Ohmura, Michifumi Takeichi, Kentarou Masai, Seiichi Okamoto, Masatake Nakamura 1992-05-05 $26,000
5098007 Method of manufacturing a vehicle body Hitoshi Tsuruda, Morishige Hattori, Masato Okazaki, Hiroyuki Yamada, Kiyotaka Kikumoto +2 more 1992-03-24 $34,000
4995321 Car body for railway rolling stock Keiji Ohmura, Michifumi Takeichi, Masato Okazaki, Hitoshi Tsuruda 1991-02-26 $57,000
4993329 Car body for railway rolling stock and method of fabricating the car body Michifumi Takeich, Keiji Ohmura, Masato Okazaki, Hitoshi Tsuruda 1991-02-19 $66,000
4966082 Construction and a manufacturing method of underframe for a rolling stock Michifumi Takeichi, Hisashi Tani, Katsuyuki Terada, Takeyuki Watanabe, Masayuki Dogen 1990-10-30 $37,000
4580522 Rotary substrate holder of molecular beam epitaxy apparatus Kazumasa Fujioka, Muneo Mizumoto, Hideaki Kamohara, Shinjiro Ueda, Takao Kuroda +2 more 1986-04-08 $41,000
4542712 Apparatus for molecular beam epitaxy Kazuo Sato, Sumio Yamaguchi, Shigeo Kato, Yasuhide Matsumura, Muneo Mizumoto +1 more 1985-09-24 $28,000