- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/10 - Cellulose or derivatives thereof
Patent holdings for IPC class C09K 8/10
Total number of patents in this class: 149
10-year publication summary
|
14
|
21
|
12
|
12
|
8
|
8
|
2
|
2
|
4
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20964 |
30 |
| Saudi Arabian Oil Company | 13409 |
16 |
| Schlumberger Technology Corporation | 10898 |
7 |
| Schlumberger Canada Limited | 7369 |
6 |
| Oji Holdings Corporation | 731 |
6 |
| GranBio Intellectual Property Holdings, LLC | 121 |
6 |
| Schlumberger Technology B.v. | 5184 |
5 |
| Services Petroliers Schlumberger | 5830 |
5 |
| Hercules LLC | 224 |
4 |
| Schlumberger Holdings Limited | 2800 |
3 |
| Elkem AS | 60 |
3 |
| Prad Research and Development Limited | 2691 |
3 |
| Dow Global Technologies LLC | 10437 |
2 |
| API Intellectual Property Holdings, LLC | 78 |
2 |
| Aramco Services Company | 4033 |
2 |
| Cellucomp Limited | 37 |
2 |
| Dai-Ichi Kogyo Seiyaku Co., Ltd. | 229 |
2 |
| Gas Technology Institute | 348 |
2 |
| Mitsubishi Gas Chemical Company, Inc. | 3486 |
2 |
| Petroleo Brasileiro S.A. - Petrobras | 865 |
2 |
| Other owners | 39 |