Issued Patents 2021
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11167998 | Calcium carbonate and production method therefor | Maya Yoshida | 2021-11-09 |
| 11085095 | High-strength seamless stainless steel pipe for oil country tubular goods and method of manufacturing high-strength seamless stainless steel pipe | Yasuhide Ishiguro | 2021-08-10 |
| 11072835 | High-strength seamless stainless steel pipe for oil country tubular goods, and method for producing the same | Yasuhide Ishiguro | 2021-07-27 |
| 10995200 | Kaolin clay for thermoplastic resin composition and thermoplastic resin composition | Yutaka Minamino, Ruriko Nakagawa, Kosuke Kawai, Masahiro Matsui | 2021-05-04 |
| 10975450 | Low alloy high strength thick-walled seamless steel pipe for oil country tubular goods | Mitsuhiro Okatsu, Masao Yuga, Haruo Nakamichi | 2021-04-13 |