- All sections
- A - Human necessities
- A42B - Hatshead coverings
- A42B 3/28 - Ventilating arrangements
Patent holdings for IPC class A42B 3/28
Total number of patents in this class: 559
10-year publication summary
|
72
|
67
|
76
|
68
|
86
|
68
|
60
|
62
|
62
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stryker Corporation | 5263 |
49 |
| Bell Sports LLC | 233 |
37 |
| Riddell, Inc. | 238 |
17 |
| 3m Innovative Properties Company | 17507 |
16 |
| Illinois Tool Works Inc. | 11745 |
11 |
| Bombardier Recreational Products Inc. | 1487 |
11 |
| George Tfe SCP | 55 |
10 |
| Dyson Technology Limited | 3924 |
9 |
| HJC Corp. | 152 |
9 |
| Shoei Co., Ltd. | 273 |
8 |
| Specialized Bicycle Components, Inc. | 740 |
8 |
| Public University Corporation SUWA University of Science Foundation | 19 |
8 |
| Microclimate, Inc. | 15 |
8 |
| Kimpex Inc. | 88 |
7 |
| Klein Tools, Inc. | 194 |
7 |
| Milwaukee Electric Tool Corporation | 4836 |
7 |
| T.h.i. Total Healthcare Innovation GmbH | 11 |
7 |
| Bell Sports, Inc. | 156 |
6 |
| SFT Laboratory Co., Ltd. | 71 |
6 |
| Fujita Corporation | 41 |
5 |
| Other owners | 313 |