- 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: 123
10-year publication summary
|
13
|
10
|
7
|
3
|
10
|
10
|
6
|
7
|
13
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29399 |
9 |
| Bridgestone Corporation | 7237 |
5 |
| BASF SE | 20915 |
4 |
| Mitsubishi Chemical Corporation | 4514 |
4 |
| SABIC Global Technologies B.V. | 4344 |
4 |
| Sumitomo Chemical Company, Limited | 9047 |
3 |
| Daikin Industries, Ltd. | 10004 |
3 |
| Arisawa Mfg. Co., Ltd. | 129 |
3 |
| DIC Corporation | 3802 |
3 |
| Orient Chemical Industries, Ltd. | 29 |
3 |
| Otsuka Chemical Co., Ltd. | 290 |
3 |
| Canon Inc. | 39960 |
2 |
| Continental Reifen Deutschland GmbH | 2457 |
2 |
| Fujikura Ltd. | 2938 |
2 |
| The Furukawa Electric Co., Ltd. | 3652 |
2 |
| Asahi Organic Chemicals Industry Co., Ltd. | 81 |
2 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 371 |
2 |
| Denka Company Limited | 2580 |
2 |
| DONGWOO FINE-CHEM Co., Ltd. | 1334 |
2 |
| Ecolab USA Inc. | 5491 |
2 |
| Other owners | 61 |