- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 13/72 - Spiro hydrocarbons
Patent holdings for IPC class C07C 13/72
Total number of patents in this class: 104
10-year publication summary
|
9
|
22
|
17
|
8
|
1
|
3
|
5
|
5
|
1
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17620 |
19 |
| Merck Patent GmbH | 5830 |
10 |
| Duk San Neolux Co., Ltd. | 649 |
6 |
| Guangzhou ChinaRay Optoelectronic Materials Ltd. | 148 |
5 |
| Idemitsu Kosan Co., Ltd. | 4220 |
4 |
| Beijing Aglaia Technology Development Co., Ltd. | 40 |
4 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 257 |
4 |
| 3m Innovative Properties Company | 17849 |
3 |
| Canon Inc. | 39818 |
3 |
| Canon Kabushiki Kaisha | 7055 |
3 |
| Samsung Display Co., Ltd. | 34641 |
2 |
| Tsinghua University | 5919 |
2 |
| Agency for Science, Technology and Research | 3616 |
2 |
| EcoBiotics Ltd | 8 |
2 |
| Guangdong Aglaia Optoelectronic Materials Co., Ltd. | 165 |
2 |
| University-industry Cooperation Group of Kyung Hee University | 1210 |
2 |
| Samsung Electronics Co., Ltd. | 145864 |
1 |
| E. I. du Pont de Nemours and Company | 4086 |
1 |
| FUJIFILM Corporation | 29350 |
1 |
| Semiconductor Energy Laboratory Co., Ltd. | 11398 |
1 |
| Other owners | 27 |