- All sections
- C - Chemistrymetallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 18/44 - Polycarbonates
Patent holdings for IPC class C08G 18/44
Total number of patents in this class: 1284
10-year publication summary
|
81
|
90
|
114
|
123
|
147
|
126
|
119
|
87
|
82
|
61
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Covestro Deutschland AG | 2774 |
103 |
| DIC Corporation | 3823 |
48 |
| BASF SE | 21036 |
43 |
| Mitsubishi Chemical Corporation | 4585 |
36 |
| Bayer MaterialScience AG | 777 |
34 |
| Asahi Kasei Kabushiki Kaisha | 2705 |
26 |
| Saudi Aramco Technologies Company | 109 |
25 |
| Dow Global Technologies LLC | 10459 |
23 |
| Lubrizol Advanced Materials, Inc. | 953 |
21 |
| Ube Industries, Ltd. | 834 |
19 |
| 3m Innovative Properties Company | 17762 |
18 |
| Tosoh Corporation | 1327 |
18 |
| Bayer Intellectual Property GmbH | 2486 |
17 |
| Covestro LLC | 586 |
17 |
| Covestro Intellectual Property GmbH & Co. KG | 276 |
17 |
| Mitsui Chemicals, Inc. | 3235 |
16 |
| Axalta Coating Systems IP Co., LLC | 474 |
16 |
| Acushnet Company | 2538 |
15 |
| PPG Industries Ohio, Inc. | 3435 |
13 |
| Econic Technologies Ltd | 48 |
13 |
| Other owners | 746 |