- All sections
- A - Human necessities
- A47L - Domestic washing or cleaning; suction 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: 478
10-year publication summary
|
20
|
33
|
32
|
34
|
36
|
43
|
47
|
37
|
42
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omachron Intellectual Property Inc. | 869 |
49 |
| LG Electronics Inc. | 69257 |
45 |
| Dyson Technology Limited | 3124 |
30 |
| Hilti Aktiengesellschaft | 3227 |
27 |
| Alfred Kärcher GmbH & Co. KG | 398 |
23 |
| BISSELL Inc. | 1064 |
21 |
| Samsung Electronics Co., Ltd. | 131630 |
17 |
| Bissel Inc. | 358 |
16 |
| Aktiebolaget Electrolux | 758 |
12 |
| Husqvarna AB | 2824 |
12 |
| Sharkninja Operating LLC | 1968 |
12 |
| Alfred Kärcher SE & Co. KG | 547 |
12 |
| Conrad in Trust, Wayne | 96 |
8 |
| Kingclean Electric Co., Ltd. | 111 |
7 |
| Black & Decker, Inc. | 2402 |
6 |
| Nilfisk A/S | 153 |
6 |
| Sharp Kabushiki Kaisha | 18957 |
6 |
| G.b.d. Corp. | 47 |
5 |
| Jiangsu Midea Cleaning Appliances Co., Ltd. | 231 |
5 |
| Toshiba Lifestyle Products & Services Corporation | 274 |
5 |
| Other owners | 154 |