- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir relevant apparatus
- B01J 37/28 - Phosphorising
Patent holdings for IPC class B01J 37/28
Total number of patents in this class: 332
10-year publication summary
|
20
|
19
|
20
|
14
|
12
|
13
|
5
|
19
|
9
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 3012 |
28 |
| Total Research & Technology Feluy | 446 |
20 |
| Shell Internationale Research Maatschappij B.V. | 3517 |
14 |
| Saudi Arabian Oil Company | 13814 |
12 |
| BASF Corporation | 1696 |
11 |
| Shell Oil Company | 2117 |
9 |
| Advanced Refining Technologies LLC | 58 |
9 |
| China Petroleum & Chemical Corporation | 1993 |
9 |
| Shell USA, Inc. | 1273 |
9 |
| ExxonMobil Research And Engineering Company | 2502 |
8 |
| Indian Oil Corporation Limited | 334 |
8 |
| Research Institute of Petroleum Processing, Sinopec | 368 |
8 |
| BASF SE | 21135 |
6 |
| PetroChina Company Limited | 744 |
6 |
| Hindustan Petroleum Corporation Limited | 221 |
5 |
| Johnson Matthey Public Limited Company | 1737 |
5 |
| Ketjen Limited Liability Company | 64 |
5 |
| ExxonMobil Chemical Patents Inc. | 3910 |
4 |
| Saudi Basic Industries Corporation | 536 |
4 |
| AMG Chemistry and Catalysis Consulting, LLC | 4 |
4 |
| Other owners | 148 |