- All sections
- A - Human necessities
- A61F - Filters implantable into blood vesselsprosthesesdevices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stentsorthopaedic, nursing or contraceptive devicesfomentationtreatment or protection of eyes or earsbandages, dressings or absorbent padsfirst-aid kits
- A61F 13/511 - Topsheet, i.e. the permeable cover or layer facing the skin
Patent holdings for IPC class A61F 13/511
Total number of patents in this class: 1892
10-year publication summary
|
176
|
197
|
178
|
215
|
208
|
159
|
113
|
115
|
110
|
80
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Procter & Gamble Company | 22003 |
539 |
| Unicharm Corporation | 2899 |
343 |
| Daio Paper Corporation | 1387 |
150 |
| Kimberly-clark Worldwide, Inc. | 5443 |
144 |
| Kao Corporation | 4982 |
144 |
| Essity Hygiene and Health Aktiebolag | 2052 |
66 |
| Uni-Charm Corporation | 603 |
26 |
| Fitesa Film Products LLC | 48 |
22 |
| Drylock Technologies, naamloze vennootschap | 270 |
16 |
| Mitsui Chemicals, Inc. | 3239 |
13 |
| Zuiko Corporation | 431 |
13 |
| Ontex Group NV | 169 |
13 |
| Kenvue Brands LLC | 971 |
13 |
| Toray Industries, Inc. | 7002 |
12 |
| Livedo Corporation | 157 |
12 |
| SCA Hygiene Products AB | 645 |
12 |
| Oji Holdings Corporation | 732 |
11 |
| Medline Industries, LP | 2358 |
9 |
| JNC Corporation | 1503 |
8 |
| JNC Fibers Corporation | 53 |
8 |
| Other owners | 318 |