- 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 11/14 - Secondary fibres
Patent holdings for IPC class D21H 11/14
Total number of patents in this class: 321
10-year publication summary
25
|
17
|
22
|
36
|
21
|
53
|
37
|
37
|
59
|
14
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Kemira Oyj | 1167 |
38 |
Seiko Epson Corporation | 18724 |
21 |
GPCP IP Holdings LLC | 1733 |
21 |
Footprint International, LLC | 69 |
16 |
Eastman Chemical Company | 2239 |
10 |
Fiberlean Technologies Limited | 116 |
10 |
Stora Enso Oyj | 1504 |
8 |
Uni-Charm Corporation | 611 |
6 |
Enzymatic Deinking Technologies, LLC | 44 |
6 |
Valmet AB | 463 |
6 |
Solenis Technologies, L.P. | 306 |
5 |
Kimberly-clark Worldwide, Inc. | 5854 |
4 |
Billerud AB | 72 |
4 |
IKEA Supply AG | 272 |
4 |
Mayr-Melnhof Karton Aktiengesellschaft | 209 |
4 |
Nippon Paper Industries Co., Ltd. | 782 |
4 |
North Carolina State University | 1492 |
4 |
WestRock MWV, LLC | 335 |
4 |
Purdue Research Foundation | 3277 |
3 |
Anaergia Inc. | 111 |
3 |
Other owners | 140 |