- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 17/04 - Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
Patent holdings for IPC class C01B 17/04
Total number of patents in this class: 501
10-year publication summary
|
35
|
23
|
39
|
37
|
41
|
41
|
24
|
25
|
27
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 11322 |
62 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
25 |
| Fluor Technologies Corporation | 410 |
20 |
| Aramco Services Company | 3504 |
19 |
| Phillips 66 Company | 1073 |
15 |
| Haldor Topsøe A/S | 698 |
12 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
11 |
| Linde Aktiengesellschaft | 1600 |
10 |
| China Petroleum & Chemical Corporation | 1623 |
8 |
| WorleyParsons Group, Inc. | 13 |
8 |
| ExxonMobil Upstream Research Company | 2525 |
7 |
| Shandong University | 886 |
7 |
| Total SA | 520 |
7 |
| Air Products and Chemicals, Inc. | 1448 |
6 |
| Politecnico di Milano | 790 |
6 |
| Topsoe A/S | 732 |
6 |
| ExxonMobil Research And Engineering Company | 2830 |
5 |
| Centre National de La Recherche Scientifique | 9632 |
5 |
| Uop LLC | 4083 |
5 |
| Chevron U.S.A. Inc. | 3774 |
5 |
| Other owners | 252 |