- All sections
- D - Textiles; paper
- D21G - Calenders; accessories for paper-making machines
- D21G 1/00 - Calenders; Smoothing apparatus
Patent holdings for IPC class D21G 1/00
Total number of patents in this class: 231
10-year publication summary
|
11
|
16
|
5
|
16
|
10
|
12
|
21
|
9
|
9
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Metso Paper, Inc. | 528 |
57 |
| Voith Patent GmbH | 2727 |
44 |
| Andritz Kusters GmbH | 50 |
12 |
| The Procter & Gamble Company | 22178 |
8 |
| Kimberly-clark Worldwide, Inc. | 5854 |
7 |
| Billerudkorsnas AB | 91 |
7 |
| Stora Enso Oyj | 1504 |
5 |
| Valmet AB | 463 |
5 |
| Valmet Technologies, Inc. | 174 |
4 |
| Ing. Gerritse Holding B.V. | 7 |
4 |
| Futura S.p.A. | 134 |
3 |
| Matthews International Corporation | 350 |
3 |
| Structured I, LLC | 54 |
3 |
| Seiko Epson Corporation | 18724 |
2 |
| ABB Ltd. | 29 |
2 |
| Giorgio Trani | 11 |
2 |
| Koenig & Bauer AG | 958 |
2 |
| Kolon Industries, Inc. | 1506 |
2 |
| Mondi AG | 129 |
2 |
| Nippon Paper Industries Co., Ltd. | 782 |
2 |
| Other owners | 55 |