- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/3447 - Five-membered rings condensed with carbocyclic rings
Patent holdings for IPC class C08K 5/3447
Total number of patents in this class: 134
10-year publication summary
|
10
|
7
|
3
|
10
|
10
|
6
|
7
|
14
|
4
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30653 |
10 |
| BASF SE | 21328 |
5 |
| Bridgestone Corporation | 7268 |
5 |
| Mitsubishi Chemical Corporation | 4742 |
4 |
| SABIC Global Technologies B.V. | 4619 |
4 |
| Sumitomo Chemical Company, Limited | 8967 |
3 |
| Daikin Industries, Ltd. | 10509 |
3 |
| The Furukawa Electric Co., Ltd. | 3692 |
3 |
| Arisawa Mfg. Co., Ltd. | 133 |
3 |
| Denka Company Limited | 2757 |
3 |
| DIC Corporation | 3992 |
3 |
| DONGWOO FINE-CHEM Co., Ltd. | 1441 |
3 |
| Orient Chemical Industries, Ltd. | 22 |
3 |
| Otsuka Chemical Co., Ltd. | 282 |
3 |
| Canon Inc. | 44222 |
2 |
| Continental Reifen Deutschland GmbH | 2540 |
2 |
| Fujikura Ltd. | 3117 |
2 |
| Asahi Organic Chemicals Industry Co., Ltd. | 74 |
2 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 380 |
2 |
| Ecolab USA Inc. | 5826 |
2 |
| Other owners | 67 |