- All sections
- C - Chemistrymetallurgy
- 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: 679
10-year publication summary
|
60
|
48
|
37
|
43
|
49
|
46
|
51
|
45
|
51
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17638 |
74 |
| Mitsubishi Chemical Corporation | 4514 |
61 |
| Mitsubishi Gas Chemical Company, Inc. | 3465 |
59 |
| SABIC Global Technologies B.V. | 4344 |
57 |
| Covestro Deutschland AG | 2748 |
38 |
| Sabic Innovative Plastics IP B.V. | 681 |
23 |
| Teijin Limited | 1246 |
18 |
| International Business Machines Corporation | 61257 |
15 |
| Mitsubishi Rayon Co., Ltd. | 908 |
10 |
| Asahi Kasei Kabushiki Kaisha | 2675 |
10 |
| Roquette Freres | 1023 |
10 |
| Shell Internationale Research Maatschappij B.V. | 3537 |
9 |
| Agency for Science, Technology and Research | 3626 |
9 |
| Brightgene Bio-Medical Technology Co., Ltd. | 65 |
9 |
| Lotte Advanced Materials Co., Ltd. | 405 |
9 |
| Samyang Corporation | 403 |
8 |
| General Electric Company | 13793 |
7 |
| Shell Oil Company | 2139 |
7 |
| Centre National de La Recherche Scientifique (cnrs) | 3107 |
7 |
| Covestro Intellectual Property GmbH & Co. KG | 275 |
7 |
| Other owners | 232 |