Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
SK

Susumu Katsuragi — 5 Patents

Hitachi: 5 patents #7,560 of 28,497Top 30%
HMHino Motors: 1 patents #109 of 311Top 40%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Tochigi, JP: #728 of 2,789 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Susumu Katsuragi has been granted 5 US patents while listed as an inventor at Hitachi. The first was granted in 2005 and the most recent in October 2020. Susumu Katsuragi ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Susumu Katsuragi in Tochigi, JP.

Patents per Year

Patents granted per year, 2005 to 2020Bar chart with a peak of 2 patents in 2017.peak 22005: 1 patents20052009: 1 patents20092017: 2 patents20172020: 1 patents2020

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10815555 Heat-resistant, austenitic cast steel having excellent thermal fatigue properties, and exhaust member made thereof Hirofumi Kimura, Tomonori Namito, Junji Hayakawa 2020-10-27
9765678 Heat-resistant, austenitic cast steel having excellent machinability and exhaust member made thereof Kana Morishita, Kenichi Inoue, Masahide Kawabata, Tomonori Sakuta 2017-09-19
9758851 Heat-resistant, cast ferritic steel having excellent machinability and exhaust member made thereof Masahide Kawabata, Tomonori Sakuta, Kana Morishita, Kenichi Inoue 2017-09-12
7503304 Internal engine piston and its production method Koki Otsuka, Seiichi Endo, Takashi Hattori, Masanori Hara 2009-03-17 $87,000
6846368 Casting steel having high strength and low thermal expansion Toshiaki Nonomura, Yasuhiro Ojiro, Daisuke Izutsu 2005-01-25 $123,000