- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 3/44 - Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
Patent holdings for IPC class H05B 3/44
Total number of patents in this class: 590
10-year publication summary
|
24
|
45
|
65
|
132
|
78
|
75
|
67
|
37
|
49
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Altria Client Services LLC | 1866 |
122 |
| Jli National Settlement Trust | 229 |
22 |
| RAI Strategic Holdings, Inc. | 1026 |
17 |
| Shenzhen First Union Technology Co., Ltd. | 611 |
16 |
| Shenzhen Smoore Technology Limited | 1233 |
16 |
| Philip Morris Products S.A. | 6751 |
14 |
| Türk & Hillinger GmbH | 51 |
14 |
| Watlow Electric Manufacturing Company | 569 |
12 |
| Nicoventures Trading Limited | 2898 |
12 |
| Heraeus Noblelight GmbH | 233 |
10 |
| Fontem Ventures B.V. | 312 |
9 |
| Kyocera Corporation | 12735 |
8 |
| NGK Insulators, Ltd. | 4589 |
7 |
| Rosemount Aerospace Inc. | 747 |
7 |
| Panasonic Corporation | 20786 |
6 |
| I.R.C.A. S.p.A. Industria Resistenze Corazzate e Affini | 152 |
6 |
| Japan Tobacco Inc. | 3225 |
6 |
| Philip Morris USA Inc. | 744 |
5 |
| Bestway Inflatables & Material Corp. | 367 |
5 |
| JT International S.A. | 2449 |
5 |
| Other owners | 271 |