- All sections
- C - Chemistry; metallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 64/30 - General preparatory processes using carbonates
Patent holdings for IPC class C08G 64/30
Total number of patents in this class: 647
10-year publication summary
|
60
|
48
|
37
|
43
|
49
|
45
|
47
|
45
|
50
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17632 |
69 |
| Mitsubishi Chemical Corporation | 4438 |
58 |
| Mitsubishi Gas Chemical Company, Inc. | 3343 |
53 |
| SABIC Global Technologies B.V. | 4193 |
51 |
| Covestro Deutschland AG | 2685 |
36 |
| Sabic Innovative Plastics IP B.V. | 683 |
23 |
| International Business Machines Corporation | 60075 |
15 |
| Teijin Limited | 1232 |
15 |
| Mitsubishi Rayon Co., Ltd. | 949 |
10 |
| Roquette Freres | 1025 |
10 |
| Shell Internationale Research Maatschappij B.V. | 3721 |
9 |
| Agency for Science, Technology and Research | 3563 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2560 |
9 |
| Brightgene Bio-Medical Technology Co., Ltd. | 66 |
9 |
| Lotte Advanced Materials Co., Ltd. | 411 |
9 |
| General Electric Company | 17803 |
7 |
| Shell Oil Company | 2155 |
7 |
| Samyang Corporation | 384 |
7 |
| Centre National de La Recherche Scientifique (cnrs) | 3139 |
7 |
| Covestro Intellectual Property GmbH & Co. KG | 276 |
7 |
| Other owners | 227 |