- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 24/18 - Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
Patent holdings for IPC class C04B 24/18
Total number of patents in this class: 98
10-year publication summary
|
7
|
6
|
6
|
9
|
6
|
9
|
3
|
2
|
7
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 835 |
8 |
| Sika Technology AG | 2881 |
7 |
| Construction Research & Technology GmbH | 641 |
6 |
| Saudi Arabian Oil Company | 13428 |
5 |
| Nippon Shokubai Co., Ltd. | 1497 |
4 |
| Kao Corporation | 4982 |
3 |
| Borregaard AS | 125 |
3 |
| Denka Company Limited | 2630 |
3 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 625 |
3 |
| NUtech Ventures | 341 |
3 |
| Halliburton Energy Services, Inc. | 20977 |
2 |
| Aramco Services Company | 4039 |
2 |
| King Fahd University of Petroleum and Minerals | 1305 |
2 |
| Obayashi Corporation | 74 |
2 |
| Toho Chemical Industry Co., Ltd. | 31 |
2 |
| Adaptavate Ltd | 20 |
2 |
| Schlumberger Canada Limited | 7373 |
1 |
| Schlumberger Technology B.v. | 5189 |
1 |
| Schlumberger Holdings Limited | 2800 |
1 |
| BASF SE | 21039 |
1 |
| Other owners | 37 |