- 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: 1255
10-year publication summary
|
89
|
98
|
119
|
129
|
152
|
133
|
119
|
88
|
83
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Covestro Deutschland AG | 2725 |
103 |
| DIC Corporation | 3759 |
46 |
| BASF SE | 20803 |
42 |
| Bayer MaterialScience AG | 806 |
34 |
| Mitsubishi Chemical Corporation | 4492 |
32 |
| Dow Global Technologies LLC | 10384 |
28 |
| Asahi Kasei Kabushiki Kaisha | 2640 |
26 |
| Saudi Aramco Technologies Company | 108 |
25 |
| Lubrizol Advanced Materials, Inc. | 953 |
21 |
| 3m Innovative Properties Company | 17855 |
19 |
| Ube Industries, Ltd. | 853 |
19 |
| Covestro LLC | 580 |
18 |
| Bayer Intellectual Property GmbH | 2519 |
17 |
| Covestro Intellectual Property GmbH & Co. KG | 275 |
17 |
| PPG Industries Ohio, Inc. | 3458 |
16 |
| Mitsui Chemicals, Inc. | 3206 |
16 |
| Axalta Coating Systems IP Co., LLC | 475 |
16 |
| Tosoh Corporation | 1270 |
16 |
| Acushnet Company | 2489 |
15 |
| Rohm and Haas Company | 2910 |
12 |
| Other owners | 717 |