- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/3437 - Six-membered rings condensed with carbocyclic rings
Patent holdings for IPC class C08K 5/3437
Total number of patents in this class: 268
10-year publication summary
|
23
|
30
|
24
|
19
|
21
|
24
|
17
|
25
|
15
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7228 |
10 |
| Continental Reifen Deutschland GmbH | 2455 |
10 |
| LG Chem, Ltd. | 17644 |
8 |
| Seiko Epson Corporation | 19510 |
8 |
| FUJIFILM Corporation | 29543 |
8 |
| BASF SE | 20979 |
7 |
| Solventum Intellectual Properties Company | 3332 |
7 |
| Henkel AG & Co. KGaA | 10609 |
6 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 370 |
6 |
| Canon Inc. | 40352 |
5 |
| Covestro Deutschland AG | 2765 |
5 |
| DIC Corporation | 3812 |
5 |
| Akron Polymer Solutions, Inc. | 20 |
5 |
| Sumitomo Chemical Company, Limited | 9047 |
4 |
| Namics Corporation | 448 |
4 |
| Sennics Co., Ltd. | 95 |
4 |
| Xerox Corporation | 6986 |
3 |
| The Boeing Company | 20117 |
3 |
| Ricoh Company, Ltd. | 13316 |
3 |
| Arkema Inc. | 1067 |
3 |
| Other owners | 154 |