- All sections
- A - Human necessities
- A47L - Domestic washing or cleaningsuction cleaners in general
- A47L 9/20 - Means for cleaning filters
Patent holdings for IPC class A47L 9/20
Total number of patents in this class: 553
10-year publication summary
|
32
|
34
|
36
|
43
|
47
|
37
|
43
|
42
|
38
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75973 |
63 |
| Omachron Intellectual Property Inc. | 970 |
58 |
| Dyson Technology Limited | 4028 |
43 |
| Hilti Aktiengesellschaft | 3710 |
36 |
| BISSELL Inc. | 1146 |
22 |
| Sharkninja Operating LLC | 2746 |
20 |
| Samsung Electronics Co., Ltd. | 158842 |
19 |
| Alfred Kärcher GmbH & Co. KG | 348 |
17 |
| Husqvarna AB | 3038 |
16 |
| Bissel Inc. | 274 |
16 |
| Alfred Kärcher SE & Co. KG | 777 |
13 |
| Aktiebolaget Electrolux | 859 |
12 |
| Conrad in Trust, Wayne | 93 |
8 |
| Kingclean Electric Co., Ltd. | 150 |
7 |
| Black & Decker, Inc. | 2464 |
6 |
| Jiangsu Midea Cleaning Appliances Co., Ltd. | 341 |
6 |
| Milwaukee Electric Tool Corporation | 5026 |
6 |
| Toshiba Lifestyle Products & Services Corporation | 230 |
6 |
| Sharp Kabushiki Kaisha | 18486 |
6 |
| Festool GmbH | 413 |
5 |
| Other owners | 168 |