- All sections
- D - Textiles; paper
- D21G - Calenders; accessories 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: 568
10-year publication summary
|
32
|
60
|
34
|
49
|
52
|
29
|
41
|
35
|
35
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2727 |
98 |
| Metso Paper, Inc. | 528 |
42 |
| Seiko Epson Corporation | 18724 |
36 |
| GPCP IP Holdings LLC | 1733 |
26 |
| International Paper Company | 857 |
22 |
| Valmet Automation Oy | 107 |
19 |
| S.A. Giuseppe Cristini S.p.A. | 22 |
15 |
| Honeywell Limited | 106 |
14 |
| Honeywell ASCa Inc. | 107 |
13 |
| Procemex Oy | 40 |
12 |
| Honeywell International Inc. | 13799 |
11 |
| Runtech Systems Oy | 25 |
11 |
| The Procter & Gamble Company | 22178 |
10 |
| Valmet AB | 463 |
9 |
| Valmet Technologies Oy | 284 |
9 |
| ABB Schweiz AG | 6321 |
8 |
| ABB Ltd. | 29 |
8 |
| Ecolab USA Inc. | 5190 |
8 |
| IBS of America | 25 |
8 |
| Kemira Oyj | 1167 |
8 |
| Other owners | 181 |