- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/38 - Gaseous or foamed well-drilling compositions
Patent holdings for IPC class C09K 8/38
Total number of patents in this class: 91
10-year publication summary
12
|
8
|
5
|
9
|
10
|
14
|
5
|
3
|
2
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Halliburton Energy Services, Inc. | 20165 |
22 |
Saudi Arabian Oil Company | 11322 |
8 |
China University of Petroleum (Beijing) | 258 |
4 |
BASF SE | 19740 |
3 |
Green Products & Technologies, L.L.C. | 37 |
3 |
Societe d'Exploitation de Produits pour Les Industries Chimiques SEPPIC | 401 |
3 |
Shell Internationale Research Maatschappij B.V. | 3792 |
2 |
Advansix Resins & Chemicals LLC | 278 |
2 |
Aramco Services Company | 3504 |
2 |
BYK-Chemie GmbH | 437 |
2 |
Dongying Taier Petrol Technology Co., Ltd | 4 |
2 |
Instituto Mexicano Del Petroleo | 213 |
2 |
Lamberti SpA | 258 |
2 |
Momentive Performance Materials Inc. | 861 |
2 |
Southwest Petroleum University | 403 |
2 |
Championx LLC | 311 |
2 |
Schlumberger Canada Limited | 6913 |
1 |
Schlumberger Technology B.v. | 4951 |
1 |
Schlumberger Holdings Limited | 2947 |
1 |
3m Innovative Properties Company | 18406 |
1 |
Other owners | 24 |