- 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 21/48 - Elements suited for physical verification, e.g. by irradiation
Patent holdings for IPC class D21H 21/48
Total number of patents in this class: 181
10-year publication summary
|
33
|
11
|
9
|
11
|
9
|
7
|
5
|
5
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Arjowiggins Security | 125 |
16 |
| Giesecke+Devrient Currency Technology GmbH | 902 |
14 |
| Giesecke & Devrient GmbH | 863 |
11 |
| Oberthur Fiduciaire SAS | 136 |
9 |
| Bundesdruckerei GmbH | 1001 |
6 |
| Omya International AG | 771 |
5 |
| Bank of Canada | 143 |
4 |
| Crane & Co., Inc. | 123 |
4 |
| Fabrica Nacional de Moneda y Timbre - Real Casa de La Moneda | 39 |
4 |
| Toppan Printing Co., Ltd. | 2130 |
4 |
| Authentix, Inc. | 135 |
3 |
| D W Spinks (Embossing) Ltd. | 10 |
3 |
| SICPA Holding SA | 918 |
3 |
| IDEMIA Identity & Security USA LLC | 231 |
3 |
| Security Fibres UK Limited | 5 |
3 |
| Auburn University | 508 |
2 |
| China Banknote Printing and Minting Corporation | 105 |
2 |
| De La Rue International Limited | 387 |
2 |
| Fasver | 25 |
2 |
| The Governing Council of The University of Toronto, | 1484 |
2 |
| Other owners | 79 |