- All sections
- C - Chemistry; metallurgy
- C08L - Compositions of macromolecular compounds
- C08L 79/04 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
Patent holdings for IPC class C08L 79/04
Total number of patents in this class: 663
10-year publication summary
|
67
|
63
|
56
|
48
|
59
|
54
|
54
|
52
|
34
|
19
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shengyi Technology Co., Ltd. | 255 |
40 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
38 |
| FUJIFILM Corporation | 27102 |
31 |
| Toray Industries, Inc. | 6652 |
21 |
| Nissan Chemical Corporation | 1725 |
21 |
| Nissan Chemical Industries, Ltd. | 1822 |
19 |
| 3m Innovative Properties Company | 18406 |
17 |
| Adeka Corporation | 1333 |
10 |
| PBI Performance Products, Inc. | 90 |
10 |
| Hitachi Chemical Company, Ltd. | 2455 |
9 |
| Kolon Industries, Inc. | 1506 |
9 |
| Saudi Arabian Oil Company | 11322 |
9 |
| Soprema | 80 |
9 |
| Universite de Haute Alsace | 136 |
9 |
| BASF SE | 19740 |
8 |
| KCC Corporation | 256 |
8 |
| LG Chem, Ltd. | 17205 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Agency for Science, Technology and Research | 3512 |
6 |
| Huntsman Advanced Materials Americas LLC | 136 |
6 |
| Other owners | 370 |