- All sections
- C - Chemistry; metallurgy
- C08J - Working-up; general processes of compounding; after-treatment not covered by subclasses , , , or
- C08J 3/21 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase
Patent holdings for IPC class C08J 3/21
Total number of patents in this class: 281
10-year publication summary
|
16
|
21
|
14
|
30
|
28
|
22
|
26
|
42
|
27
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8808 |
8 |
| Dow Global Technologies LLC | 10147 |
8 |
| Arkema France | 3790 |
7 |
| 3m Innovative Properties Company | 18406 |
6 |
| SABIC Global Technologies B.V. | 4044 |
6 |
| Agc, Inc. | 4029 |
5 |
| Xerox Corporation | 7503 |
4 |
| Celanese International Corporation | 879 |
4 |
| Chemtura Corporation | 211 |
4 |
| Zeon Corporation | 3854 |
4 |
| Kao Corporation | 4843 |
3 |
| ExxonMobil Chemical Patents Inc. | 4286 |
3 |
| Arkema Inc. | 1075 |
3 |
| Chryso | 112 |
3 |
| Interfacial Consultants LLC | 32 |
3 |
| Compagnie Generale des Etablissements Michelin | 4450 |
3 |
| Toyo Tire Corporation | 943 |
3 |
| Continuus Materials Intellectual Property, LLC | 40 |
3 |
| SHPP Global Technologies B.V. | 1045 |
3 |
| Massachusetts Institute of Technology | 9795 |
2 |
| Other owners | 196 |