- All sections
- C - Chemistry; metallurgy
- C04B - Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment 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: 82
10-year publication summary
|
8
|
7
|
7
|
6
|
9
|
7
|
10
|
4
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 782 |
8 |
| Sika Technology AG | 2650 |
7 |
| Construction Research & Technology GmbH | 640 |
6 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
4 |
| Nippon Shokubai Co., Ltd. | 1487 |
4 |
| Kao Corporation | 4843 |
3 |
| Borregaard AS | 108 |
3 |
| NUtech Ventures | 301 |
3 |
| Halliburton Energy Services, Inc. | 20165 |
2 |
| Denka Company Limited | 2189 |
2 |
| Obayashi Corporation | 55 |
2 |
| Schlumberger Canada Limited | 6913 |
1 |
| Schlumberger Technology B.v. | 4951 |
1 |
| Schlumberger Holdings Limited | 2947 |
1 |
| BASF SE | 19740 |
1 |
| Baerlocher GmbH | 47 |
1 |
| Carnegie Mellon University | 1405 |
1 |
| Forestry and Forest Products Research Institute | 16 |
1 |
| GC Corporation | 418 |
1 |
| GCP Applied Technologies Inc. | 451 |
1 |
| Other owners | 29 |