- All sections
- B - Performing operationstransporting
- B32B - Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form
- B32B 23/20 - Layered products essentially comprising cellulosic plastic substances comprising esters
Patent holdings for IPC class B32B 23/20
Total number of patents in this class: 185
10-year publication summary
|
16
|
31
|
24
|
18
|
8
|
7
|
19
|
10
|
15
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29095 |
32 |
| Solutia Inc. | 417 |
18 |
| Nitto Denko Corporation | 8151 |
7 |
| Konica Minolta, Inc. | 8624 |
7 |
| Dai Nippon Printing Co., Ltd. | 4025 |
7 |
| 3m Innovative Properties Company | 17865 |
6 |
| Celanese International Corporation | 915 |
6 |
| Celanese Acetate LLC | 72 |
5 |
| Shanjin Optoelectronics (Suzhou) Co., Ltd. | 136 |
5 |
| Samsung SDI Co., Ltd. | 7769 |
4 |
| Konica Minolta Opto, Inc. | 1102 |
4 |
| Samsung Display Co., Ltd. | 33816 |
3 |
| Eastman Chemical Company | 2257 |
3 |
| Essilor International (compagnie Generale D'optique) | 2962 |
3 |
| Zeon Corporation | 4052 |
3 |
| LG Chem, Ltd. | 17479 |
2 |
| Konica Minolta Advanced Layers, Inc. | 217 |
2 |
| Cargill, Incorporated | 2891 |
2 |
| Dexerials Corporation | 1936 |
2 |
| DONGWOO FINE-CHEM Co., Ltd. | 1287 |
2 |
| Other owners | 62 |