- All sections
- C - Chemistrymetallurgy
- C08L - Compositions of macromolecular compounds
- C08L 79/04 - Polycondensates having nitrogen-containing heterocyclic rings in the main chainPolyhydrazidesPolyamide acids or similar polyimide precursors
Patent holdings for IPC class C08L 79/04
Total number of patents in this class: 708
10-year publication summary
|
61
|
54
|
46
|
59
|
50
|
51
|
54
|
34
|
40
|
27
|
| 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 |
43 |
| Shengyi Technology Co., Ltd. | 262 |
39 |
| FUJIFILM Corporation | 29437 |
36 |
| Toray Industries, Inc. | 6950 |
26 |
| Nissan Chemical Corporation | 2033 |
21 |
| Nissan Chemical Industries, Ltd. | 1711 |
19 |
| 3m Innovative Properties Company | 17823 |
16 |
| Adeka Corporation | 1365 |
10 |
| PBI Performance Products, Inc. | 81 |
10 |
| Hitachi Chemical Company, Ltd. | 2344 |
9 |
| Kolon Industries, Inc. | 1688 |
9 |
| Saudi Arabian Oil Company | 13224 |
9 |
| Soprema | 83 |
9 |
| Universite de Haute Alsace | 151 |
9 |
| BASF SE | 20940 |
8 |
| KCC Corporation | 312 |
8 |
| LG Chem, Ltd. | 17635 |
7 |
| Alcon, Inc. | 5434 |
7 |
| Nanyang Technological University | 2015 |
7 |
| Samsung Electronics Co., Ltd. | 146811 |
6 |
| Other owners | 400 |