- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/04 - Preparation of sulfurPurification from gaseous sulfur compounds including gaseous sulfides
Patent holdings for IPC class C01B 17/04
Total number of patents in this class: 523
10-year publication summary
|
20
|
35
|
30
|
36
|
38
|
24
|
22
|
24
|
24
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13442 |
83 |
| Aramco Services Company | 4042 |
24 |
| Shell Internationale Research Maatschappij B.V. | 3555 |
23 |
| Fluor Technologies Corporation | 375 |
18 |
| Phillips 66 Company | 1051 |
15 |
| Haldor Topsøe A/S | 646 |
12 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
11 |
| Linde Aktiengesellschaft | 1496 |
10 |
| China Petroleum & Chemical Corporation | 1921 |
8 |
| Air Products and Chemicals, Inc. | 1446 |
7 |
| ExxonMobil Upstream Research Company | 2389 |
7 |
| Shandong University | 1058 |
7 |
| WorleyParsons Group, Inc. | 12 |
7 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4008 |
6 |
| Politecnico di Milano | 857 |
6 |
| Topsoe A/S | 925 |
6 |
| Uop LLC | 4247 |
5 |
| Chevron U.S.A. Inc. | 4010 |
5 |
| Gas Technology Institute | 347 |
5 |
| Knauf Gips KG | 610 |
5 |
| Other owners | 253 |