- 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: 339
10-year publication summary
|
21
|
21
|
20
|
14
|
12
|
16
|
6
|
21
|
9
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 3104 |
28 |
| Total Research & Technology Feluy | 437 |
20 |
| Saudi Arabian Oil Company | 14305 |
15 |
| Shell Internationale Research Maatschappij B.V. | 3394 |
14 |
| BASF Corporation | 1681 |
12 |
| Shell Oil Company | 2068 |
9 |
| Advanced Refining Technologies LLC | 57 |
9 |
| China Petroleum & Chemical Corporation | 2166 |
9 |
| Shell USA, Inc. | 1341 |
9 |
| ExxonMobil Research And Engineering Company | 2400 |
8 |
| Indian Oil Corporation Limited | 336 |
8 |
| Research Institute of Petroleum Processing, Sinopec | 361 |
8 |
| BASF SE | 21306 |
6 |
| PetroChina Company Limited | 886 |
6 |
| Hindustan Petroleum Corporation Limited | 229 |
5 |
| Johnson Matthey Public Limited Company | 1763 |
5 |
| Ketjen Limited Liability Company | 66 |
5 |
| ExxonMobil Chemical Patents Inc. | 3768 |
4 |
| Saudi Basic Industries Corporation | 524 |
4 |
| AMG Chemistry and Catalysis Consulting, LLC | 4 |
4 |
| Other owners | 151 |