Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12305266 | High-strength steel plate having excellent formability, toughness and weldability, and production method of same | Hiroyuki Kawata, Eisaku Sakurada, Takafumi Yokoyama | 2025-05-20 |
| 12247263 | Steel sheet and method for producing same | Hiroyuki Kawata | 2025-03-11 |
| 12024752 | Steel sheet and method for manufacturing same | Hiroyuki Kawata, Kengo Takeda | 2024-07-02 |
| 11885025 | High-strength steel sheet having excellent moldability and impact resistance, and method for manufacturing high-strength steel sheet having excellent moldability and impact resistance | Hiroyuki Kawata, Eisaku Sakurada, Takafumi Yokoyama | 2024-01-30 |
| 11732341 | Metal coated steel sheet, manufacturing method of hot-dip galvanized steel sheet, and manufacturing method of alloyed galvannealed steel sheet | Jun Haga, Koutarou Hayashi, Kunio Hayashi, Masaharu Kameda, Akihiro Uenishi +1 more | 2023-08-22 |
| 11680303 | Steel sheet and manufacturing method therefor | Takafumi Yokoyama, Riki Okamoto, Hiroyuki Kawata, Kohei Ueda, Eisaku Sakurada | 2023-06-20 |
| 11649531 | Steel sheet and plated steel sheet | Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata | 2023-05-16 |
| 11447848 | Steel sheet and manufacturing method of therefor | Takafumi Yokoyama, Riki Okamoto, Hiroyuki Kawata, Eisaku Sakurada, Yuji Yamaguchi +5 more | 2022-09-20 |
| 11377710 | Steel sheet and manufacturing method therefor | Takafumi Yokoyama, Riki Okamoto, Hiroyuki Kawata, Eisaku Sakurada, Yuji Yamaguchi +5 more | 2022-07-05 |
| 11236412 | Steel sheet and plated steel sheet | Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata | 2022-02-01 |
| 11230755 | Steel sheet and plated steel sheet | Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata | 2022-01-25 |
| 11225701 | Hot dip galvanized steel sheet and hot dip galvannealed steel sheet | Jun Haga, Koutarou Hayashi, Kunio Hayashi, Masaharu Kameda, Akihiro Uenishi +1 more | 2022-01-18 |
| 11118252 | Galvannealed steel sheet | Hiroyuki Kawata, Yuji Yamaguchi, Satoshi Uchida, Yoshinori Imai, Riki Okamoto | 2021-09-14 |
| 10889879 | Steel sheet and plated steel sheet | Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata | 2021-01-12 |
| 10745775 | Galvannealed steel sheet and method for producing the same | Jun Haga, Koutarou Hayashi, Hiroyuki Kawata, Riki Okamoto, Akihiro Uenishi | 2020-08-18 |
| 10501832 | Plated steel sheet | Koutarou Hayashi, Akihiro Uenishi, Masaharu Kameda, Jun Haga, Kunio Hayashi +1 more | 2019-12-10 |
| 10465272 | High-strength hot-dip galvanized steel sheet and high-strength alloyed hot-dip galvanized steel sheet having excellent plating adhesion, formability, and hole expandability with tensile strength of 980 MPa or more and manufacturing method therefor | Chisato Wakabayashi, Masafumi Azuma, Nobuhiro Fujita | 2019-11-05 |
| 10266928 | Method for producing a cold-rolled steel sheet | Yuri Toda, Riki Okamoto, Nobuhiro Fujita, Hiroshi Yoshida, Toshio Ogawa +2 more | 2019-04-23 |
| 10167539 | Hot-rolled steel sheet and method for producing same | Kunio Hayashi, Kazuaki Nakano, Riki Okamoto, Nobuhiro Fujita | 2019-01-01 |
| 10066283 | High-strength cold-rolled steel sheet having excellent uniform elongation and hole expandability | Yuri Toda, Riki Okamoto, Nobuhiro Fujita, Hiroshi Yoshida, Toshio Ogawa | 2018-09-04 |
| 10060006 | High-strength cold-rolled steel sheet having excellent local deformability | Yoshihiro Suwa, Kazuaki Nakano, Kunio Hayashi, Riki Okamoto, Nobuhiro Fujita | 2018-08-28 |
| 9988697 | High-strength hot-rolled steel sheet having excellent local deformability and manufacturing method thereof | Yoshihiro Suwa, Kazuaki Nakano, Kunio Hayashi, Riki Okamoto, Nobuhiro Fujita | 2018-06-05 |
| 9970074 | Cold-rolled steel sheet, galvanized cold-rolled steel sheet and method of manufacturing the same | Kaoru Kawasaki, Masaharu Kameda, Riki Okamoto | 2018-05-15 |
| 9783878 | High-strength hot-dip galvanized steel sheet and high-strength alloyed hot-dip galvanized steel sheet having excellent plating adhesion, formability, and hole expandability with tensile strength of 980 MPa or more and manufacturing method therefor | Chisato Wakabayashi, Masafumi Azuma, Nobuhiro Fujita | 2017-10-10 |
| 9631265 | Hot-rolled steel sheet and method for producing same | Kunio Hayashi, Kazuaki Nakano, Riki Okamoto, Nobuhiro Fujita | 2017-04-25 |