- 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: 1267
10-year publication summary
|
89
|
98
|
118
|
128
|
152
|
131
|
120
|
91
|
83
|
42
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Covestro Deutschland AG | 2754 |
103 |
| DIC Corporation | 3802 |
47 |
| BASF SE | 20915 |
42 |
| Bayer MaterialScience AG | 800 |
34 |
| Mitsubishi Chemical Corporation | 4519 |
32 |
| Asahi Kasei Kabushiki Kaisha | 2677 |
26 |
| Saudi Aramco Technologies Company | 109 |
25 |
| Dow Global Technologies LLC | 10349 |
23 |
| Lubrizol Advanced Materials, Inc. | 952 |
21 |
| 3m Innovative Properties Company | 17819 |
19 |
| Ube Industries, Ltd. | 848 |
19 |
| Covestro LLC | 583 |
18 |
| Bayer Intellectual Property GmbH | 2496 |
17 |
| Covestro Intellectual Property GmbH & Co. KG | 275 |
17 |
| PPG Industries Ohio, Inc. | 3448 |
16 |
| Mitsui Chemicals, Inc. | 3220 |
16 |
| Axalta Coating Systems IP Co., LLC | 475 |
16 |
| Tosoh Corporation | 1292 |
16 |
| Acushnet Company | 2513 |
15 |
| Arkema France | 4149 |
11 |
| Other owners | 734 |