- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit 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: 398
10-year publication summary
|
38
|
34
|
35
|
22
|
40
|
37
|
22
|
18
|
21
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 14280 |
74 |
| Watlow Electric Manufacturing Company | 576 |
41 |
| Türk & Hillinger GmbH | 48 |
18 |
| NGK Spark Plug Co., Ltd. | 880 |
11 |
| NHK Spring Co., Ltd. | 1943 |
11 |
| I.R.C.A. S.p.A. Industria Resistenze Corazzate e Affini | 164 |
9 |
| Valeo Systemes Thermiques | 2812 |
7 |
| Bleckmann GmbH & Co. KG | 35 |
6 |
| Nicoventures Trading Limited | 4507 |
6 |
| NGK Insulators, Ltd. | 5212 |
5 |
| Niterra Co., Ltd. | 1375 |
5 |
| Robert Bosch GmbH | 43646 |
4 |
| Bosch Corporation | 369 |
4 |
| Shenzhen First Union Technology Co., Ltd. | 950 |
4 |
| Philip Morris Products S.A. | 8013 |
3 |
| Chromalox, Inc. | 57 |
3 |
| DBK David + Baader GmbH | 49 |
3 |
| JT International S.A. | 2827 |
3 |
| ResMed Pty Ltd | 2151 |
3 |
| China Tobacco Hubei Industrial Corporation Limited | 87 |
3 |
| Other owners | 175 |