- All sections
- D - Textilespaper
- D21G - Calendersaccessories for paper-making machines
- D21G 9/00 - Other accessories for paper-making machines
Patent holdings for IPC class D21G 9/00
Total number of patents in this class: 609
10-year publication summary
|
34
|
49
|
52
|
29
|
41
|
35
|
38
|
26
|
45
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2743 |
105 |
| Seiko Epson Corporation | 20327 |
47 |
| Metso Paper, Inc. | 335 |
29 |
| International Paper Company | 599 |
23 |
| GPCP IP Holdings LLC | 1530 |
23 |
| Valmet Automation Oy | 112 |
20 |
| S.A. Giuseppe Cristini S.p.A. | 26 |
17 |
| Honeywell Limited | 111 |
14 |
| ABB Schweiz AG | 7656 |
13 |
| Honeywell International Inc. | 12776 |
12 |
| Honeywell ASCa Inc. | 99 |
12 |
| Procemex Oy | 34 |
12 |
| Valmet AB | 555 |
12 |
| Kemira Oyj | 1261 |
11 |
| Runtech Systems Oy | 22 |
11 |
| The Procter & Gamble Company | 21853 |
10 |
| Andritz AG | 245 |
9 |
| Stowe Woodward Licensco, LLC | 51 |
9 |
| Ecolab USA Inc. | 5810 |
8 |
| IBS of America | 26 |
8 |
| Other owners | 204 |