- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment 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: 229
10-year publication summary
|
15
|
30
|
17
|
15
|
10
|
15
|
9
|
5
|
8
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Arjowiggins Security | 143 |
23 |
| Oberthur Fiduciaire SAS | 159 |
22 |
| Crane & Co., Inc. | 113 |
15 |
| Giesecke+Devrient Currency Technology GmbH | 817 |
12 |
| Giesecke & Devrient GmbH | 990 |
11 |
| Arjowiggins | 20 |
7 |
| De La Rue International Limited | 416 |
7 |
| BASF SE | 19740 |
6 |
| Bundesdruckerei GmbH | 1024 |
6 |
| KBA-NotaSys SA | 159 |
5 |
| Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie "goznak" (fgup "goznak") | 27 |
5 |
| Merck Patent GmbH | 5909 |
4 |
| Stora Enso Oyj | 1504 |
4 |
| Toppan Printing Co., Ltd. | 2212 |
4 |
| Dai Nippon Printing Co., Ltd. | 3891 |
3 |
| Canadian Bank Note Company, Limited | 58 |
3 |
| Fabrica Nacional de Moneda y Timbre - Real Casa de La Moneda | 43 |
3 |
| Hueck FOLIEN Ges.m.b.H. | 140 |
3 |
| Omya International AG | 816 |
3 |
| UPM-Kymmene Corporation | 868 |
3 |
| Other owners | 80 |