- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 68/04 - Preparation of esters of carbonic or haloformic acids from carbon dioxide or inorganic carbonates
Patent holdings for IPC class C07C 68/04
Total number of patents in this class: 89
10-year publication summary
|
3
|
6
|
1
|
4
|
4
|
9
|
6
|
2
|
5
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Gas Chemical Company, Inc. | 3468 |
16 |
| Asahi Kasei Kabushiki Kaisha | 2677 |
6 |
| Nippon Steel Corporation | 6274 |
4 |
| Nippon Steel Engineering Co., Ltd. | 206 |
4 |
| Industrial Technology Research Institute | 5081 |
3 |
| Asahi Kasei Chemicals Corporation | 678 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3548 |
2 |
| National Institute of Advanced Industrial Science and Technology | 3789 |
2 |
| Council of Scientific & Industrial Research | 1427 |
2 |
| E3tec Service, LLC | 6 |
2 |
| Indian Oil Corporation Limited | 335 |
2 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
2 |
| Omya International AG | 771 |
2 |
| Qatar Foundation for Education, Science and Community Development | 211 |
2 |
| Reliance Industries Limited | 450 |
2 |
| Tohoku University | 2792 |
2 |
| Tosoh Corporation | 1295 |
2 |
| Lotte Advanced Materials Co., Ltd. | 405 |
2 |
| Shell USA, Inc. | 1225 |
2 |
| Topsoe A/S | 898 |
2 |
| Other owners | 25 |