- 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 21/06 - Paper forming aids
Patent holdings for IPC class D21H 21/06
Total number of patents in this class: 81
10-year publication summary
9
|
9
|
7
|
7
|
8
|
9
|
5
|
4
|
8
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Kemira Oyj | 1167 |
15 |
Kimberly-clark Worldwide, Inc. | 5854 |
5 |
Seiko Epson Corporation | 18724 |
5 |
Ecolab USA Inc. | 5190 |
5 |
BASF SE | 19740 |
4 |
Stora Enso Oyj | 1504 |
4 |
Archroma IP GmbH | 460 |
3 |
Solenis Technologies Cayman, L.P. | 303 |
3 |
S.p.c.m. SA | 308 |
3 |
Sumitomo Seika Chemicals Co., Ltd. | 1028 |
3 |
MT AquaPolymer, Inc. | 13 |
3 |
Arjowiggins Security | 143 |
2 |
International Dioxcide, Inc. | 14 |
2 |
International Paper Company | 857 |
2 |
Solenis Technologies, L.P. | 306 |
2 |
Solenis Technologies Cayman, L.P. | 81 |
2 |
BASF AG | 1258 |
1 |
Georgia-Pacific Chemicals LLC | 204 |
1 |
Akzo Nobel N.V. | 240 |
1 |
Buckman Laboratories International, Inc. | 244 |
1 |
Other owners | 14 |