- All sections
- B - Performing operations; transporting
- B09C - Reclamation of contaminated soil
- B09C 1/02 - Extraction using liquids, e.g. washing, leaching
Patent holdings for IPC class B09C 1/02
Total number of patents in this class: 315
10-year publication summary
|
26
|
37
|
28
|
24
|
20
|
8
|
21
|
13
|
17
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Envit, Environmental Technologies and Engineering Ltd. | 9 |
8 |
| Takenaka Corporation | 49 |
6 |
| Yoshino Gypsum Co., Ltd. | 238 |
6 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10682 |
5 |
| Dowa ECO-SYSTEM Co., Ltd. | 54 |
5 |
| Mitsubishi Gas Chemical Company, Inc. | 3343 |
5 |
| Brice Environmental Services Corporation | 4 |
4 |
| Ethical Solutions, LLC | 15 |
4 |
| Hyundai Engineering & Construction Co., Ltd. | 22 |
4 |
| Taiheiyo Cement Corporation | 237 |
4 |
| Takenaka Civil Engineering & Construction Co., Ltd. | 11 |
4 |
| Hitachi, Ltd. | 15203 |
3 |
| FRx Inc. | 4 |
3 |
| GreenStract, LLC | 9 |
3 |
| Indian Institute of Technology Bombay | 247 |
3 |
| M-I L.L.C. | 856 |
3 |
| OxyTec LLC | 10 |
3 |
| Soletanche Freyssinet | 478 |
3 |
| Tosoh Corporation | 1212 |
3 |
| Waseda University | 433 |
3 |
| Other owners | 233 |