- 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 17/00 - Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
Patent holdings for IPC class D21H 17/00
Total number of patents in this class: 627
10-year publication summary
|
111
|
37
|
53
|
39
|
50
|
39
|
58
|
47
|
50
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 816 |
60 |
| Kemira Oyj | 1167 |
47 |
| Stora Enso Oyj | 1504 |
27 |
| Ecolab USA Inc. | 5190 |
25 |
| Solenis Technologies, L.P. | 306 |
21 |
| Novozymes A/S | 3314 |
12 |
| Buckman Laboratories International, Inc. | 244 |
12 |
| Fiberlean Technologies Limited | 116 |
11 |
| International Paper Company | 857 |
10 |
| GPCP IP Holdings LLC | 1733 |
9 |
| Kimberly-clark Worldwide, Inc. | 5854 |
8 |
| Omya Development AG | 100 |
7 |
| S.p.c.m. SA | 308 |
6 |
| UPM-Kymmene Corporation | 868 |
6 |
| Hewlett-Packard Development Company, L.P. | 28538 |
5 |
| Specialty Minerals (Michigan) Inc. | 209 |
5 |
| Wetend Technologies Oy | 28 |
5 |
| Greentech Global Pte. Ltd. | 22 |
5 |
| BASF SE | 19740 |
4 |
| Philip Morris Products S.A. | 6751 |
4 |
| Other owners | 338 |