Issued Patents All Time
Showing 1–25 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12421423 | Polishing method, machine device manufacturing method, and machine device | Ryuji Monden | 2025-09-23 |
| 12049601 | Method for producing lubricating oil composition, and lubricating oil composition | Ryuji Monden | 2024-07-30 |
| 11932820 | Lubricating oil composition and method for producing lubricating oil composition | Ryuji Monden | 2024-03-19 |
| 11795411 | Lubricating oil composition, method for producing same and vacuum apparatus | Ryuji Monden | 2023-10-24 |
| 11407960 | Lubricating oil composition and method for producing same | Ryuji Monden, Yu Gao, Masumi Kuritani | 2022-08-09 |
| 11220652 | Method for inspecting lubricating oil composition and method for producing lubricating oil composition | Ryuji Monden, Yu Gao, Masumi Kuritani | 2022-01-11 |
| 11214749 | Lubricating oil composition and method of producing the same | Ryuji Monden, Yu Gao, Masumi Kuritani | 2022-01-04 |
| 9783876 | Stainless steel for oil wells and stainless steel pipe for oil wells | Shinjiro Nakatsuka, Taro Ohe, Hisashi Amaya, Hideki Takabe, Yohei Otome +3 more | 2017-10-10 |
| 9644048 | Composition for anode buffer layer, high-molecular weight compound for anode buffer layer, organic electroluminescence element, and production process and uses of the same | Haruka Osako, Nobuhiro Natori, Tsuyoshi Katoh, Yosuke Fukuchi | 2017-05-09 |
| 9322087 | Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well | Hideki Takabe, Hisashi Amaya, Taro Ohe, Yohei Otome | 2016-04-26 |
| 9303296 | High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well | Taro Ohe, Hisashi Amaya, Hideki Takabe, Yohei Otome | 2016-04-05 |
| 9175360 | Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe | Keisuke Hitoshio, Yuji Arai | 2015-11-03 |
| 9109268 | Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well | Hideki Takabe, Hisashi Amaya, Taro Ohe, Yohei Otome | 2015-08-18 |
| 9090957 | Martensitic stainless steel oil country tubular good | Hisashi Amaya, Masakatsu Ueda | 2015-07-28 |
| 8852366 | Method for producing steel pipe with excellent expandability | Yuji Arai | 2014-10-07 |
| 8845830 | Method of manufacturing heavy-wall seamless steel pipe | Yuji Arai | 2014-09-30 |
| 8735875 | Light emitting element, method for manufacturing light emitting element, image display device, and illuminating device | Masaru Tajima, Kanjiro Sako, Katsumasa Hirose | 2014-05-27 |
| 8696834 | Method for manufacturing seamless pipes | Keiichi Kondo, Toshiharu Abe, Yuichi Yano, Yuji Arai | 2014-04-15 |
| 8608872 | High-strength stainless steel pipe excellent in sulfide stress cracking resistance and high-temperature carbonic-acid gas corrosion resistance | Hisashi Amaya, Hideki Takabe, Taro Ohe | 2013-12-17 |
| 8268650 | Process for manufacturing sealed organic electroluminescence devices | Kanjiro Sako, Katsumasa Hirose | 2012-09-18 |
| 8157930 | Martensitic stainless steel | Hisashi Amaya, Masakatsu Ueda, Keiichi Nakamura, Takahiro Kushida | 2012-04-17 |
| 8070890 | Induction hardened hollow driving shaft | Kouichi Kuroda | 2011-12-06 |
| 7931757 | Seamless steel pipe for line pipe and a process for its manufacture | Yuji Arai, Nobuyuki Hisamune | 2011-04-26 |
| 7896985 | Seamless steel pipe for line pipe and a process for its manufacture | Yuji Arai, Nobuyuki Hisamune | 2011-03-01 |
| 7896984 | Method for manufacturing seamless steel pipe for line pipe | Kenji Kobayashi, Tomohiko Omura, Yuji Arai, Nobuyuki Hisamune | 2011-03-01 |