- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 21/40 - Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
Patent holdings for IPC class D21H 21/40
Total number of patents in this class: 206
10-year publication summary
|
17
|
15
|
10
|
15
|
9
|
7
|
8
|
5
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Arjowiggins Security | 117 |
20 |
| Crane & Co., Inc. | 126 |
18 |
| Oberthur Fiduciaire SAS | 138 |
16 |
| Giesecke+Devrient Currency Technology GmbH | 938 |
13 |
| Giesecke & Devrient GmbH | 831 |
8 |
| BASF SE | 21129 |
6 |
| Bundesdruckerei GmbH | 990 |
6 |
| De La Rue International Limited | 371 |
6 |
| Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie "goznak" (fgup "goznak") | 27 |
5 |
| Arjowiggins | 9 |
4 |
| KBA-NotaSys SA | 144 |
4 |
| Toppan Printing Co., Ltd. | 2098 |
4 |
| Dai Nippon Printing Co., Ltd. | 4216 |
3 |
| Fabrica Nacional de Moneda y Timbre - Real Casa de La Moneda | 39 |
3 |
| Hueck FOLIEN Ges.m.b.H. | 152 |
3 |
| Omya International AG | 771 |
3 |
| UPM-Kymmene Corporation | 977 |
3 |
| Arjo Wiggins Fine Papers Limited | 25 |
2 |
| Canadian Bank Note Company, Limited | 44 |
2 |
| China Banknote Printing and Minting Corporation | 107 |
2 |
| Other owners | 75 |