- 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: 110
10-year publication summary
|
7
|
6
|
9
|
7
|
10
|
4
|
2
|
7
|
11
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 844 |
8 |
| Sika Technology AG | 2995 |
7 |
| Construction Research & Technology GmbH | 604 |
6 |
| Saudi Arabian Oil Company | 14161 |
6 |
| Kao Corporation | 5067 |
5 |
| Nippon Shokubai Co., Ltd. | 1536 |
5 |
| Halliburton Energy Services, Inc. | 21306 |
3 |
| Borregaard AS | 127 |
3 |
| Denka Company Limited | 2711 |
3 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 582 |
3 |
| Graymont Western Canada Inc. | 54 |
3 |
| NUtech Ventures | 363 |
3 |
| Toho Chemical Industry Co., Ltd. | 31 |
3 |
| Aramco Services Company | 4182 |
2 |
| King Fahd University of Petroleum and Minerals | 1563 |
2 |
| Knauf Gips KG | 641 |
2 |
| Obayashi Corporation | 85 |
2 |
| Adaptavate Ltd | 22 |
2 |
| Schlumberger Canada Limited | 7605 |
1 |
| Schlumberger Technology B.v. | 5299 |
1 |
| Other owners | 40 |