- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 3/48 - Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
Patent holdings for IPC class H05B 3/48
Total number of patents in this class: 373
10-year publication summary
|
22
|
38
|
34
|
35
|
22
|
40
|
36
|
21
|
18
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 13327 |
72 |
| Watlow Electric Manufacturing Company | 575 |
41 |
| Türk & Hillinger GmbH | 48 |
18 |
| NGK Spark Plug Co., Ltd. | 901 |
14 |
| NHK Spring Co., Ltd. | 1766 |
10 |
| I.R.C.A. S.p.A. Industria Resistenze Corazzate e Affini | 163 |
7 |
| Valeo Systemes Thermiques | 2597 |
6 |
| Nicoventures Trading Limited | 3423 |
6 |
| Robert Bosch GmbH | 41717 |
5 |
| Bleckmann GmbH & Co. KG | 32 |
5 |
| Bosch Corporation | 393 |
4 |
| Philip Morris Products S.A. | 7282 |
3 |
| NGK Insulators, Ltd. | 4791 |
3 |
| Chromalox, Inc. | 64 |
3 |
| DBK David + Baader GmbH | 46 |
3 |
| Shenzhen First Union Technology Co., Ltd. | 730 |
3 |
| ResMed Pty Ltd | 2057 |
3 |
| China Tobacco Hubei Industrial Corporation Limited | 84 |
3 |
| Xiamen Fengtao Ceramics Co., Ltd | 27 |
3 |
| Salamander International Holdings LLC | 27 |
3 |
| Other owners | 158 |