- All sections
- A - Human necessities
- A45D - Hairdressing or shaving equipment equipment for cosmetics or cosmetic treatments, e.g. for manicuring or pedicuring
- A45D 20/22 - Helmets with hot air supply or ventilating means, e.g. electrically heated air current
Patent holdings for IPC class A45D 20/22
Total number of patents in this class: 4
10-year publication summary
|
1
|
4
|
0
|
2
|
0
|
1
|
1
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dickson Industrial Co. Ltd. | 6 |
1 |
| Tight & Right Hair Revolution, Inc. | 4 |
1 |
| Sharp Kabushiki Kaisha | 18540 |
1 |
| SOTRO Innovations Inc. | 3 |
1 |
| Other owners | 0 |