- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/21 - UreaDerivatives thereof, e.g. biuret
Patent holdings for IPC class C08K 5/21
Total number of patents in this class: 346
10-year publication summary
|
20
|
11
|
31
|
22
|
36
|
35
|
31
|
22
|
27
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29437 |
16 |
| BASF SE | 20940 |
14 |
| Huntsman International LLC | 721 |
11 |
| BYK-Chemie GmbH | 446 |
9 |
| Mitsubishi Chemical Corporation | 4525 |
8 |
| Bridgestone Corporation | 7235 |
7 |
| Allnex Netherlands B.V. | 192 |
7 |
| NEC Corporation | 35778 |
6 |
| Board of Regents, The University of Texas System | 5808 |
6 |
| PPG Industries Ohio, Inc. | 3449 |
6 |
| Henkel AG & Co. KGaA | 10583 |
6 |
| Axalta Coating Systems IP Co., LLC | 475 |
6 |
| Sika Technology AG | 2867 |
6 |
| Solvay Specialty Polymers Italy S.p.A. | 757 |
6 |
| Total Marketing Services | 453 |
5 |
| Eneos Materials Corporation | 264 |
5 |
| SWIMC, LLC | 2501 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5669 |
3 |
| Daikin Industries, Ltd. | 10027 |
3 |
| Toray Industries, Inc. | 6950 |
3 |
| Other owners | 209 |