- 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: 367
10-year publication summary
|
31
|
22
|
38
|
34
|
35
|
22
|
39
|
35
|
21
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 12735 |
76 |
| Watlow Electric Manufacturing Company | 569 |
40 |
| Türk & Hillinger GmbH | 51 |
18 |
| NGK Spark Plug Co., Ltd. | 935 |
14 |
| NHK Spring Co., Ltd. | 1657 |
10 |
| I.R.C.A. S.p.A. Industria Resistenze Corazzate e Affini | 152 |
7 |
| Robert Bosch GmbH | 40953 |
5 |
| Bleckmann GmbH & Co. KG | 29 |
5 |
| Valeo Systemes Thermiques | 2471 |
5 |
| Bosch Corporation | 404 |
4 |
| NGK Insulators, Ltd. | 4589 |
3 |
| Chromalox, Inc. | 63 |
3 |
| DBK David + Baader GmbH | 43 |
3 |
| Shenzhen First Union Technology Co., Ltd. | 611 |
3 |
| ResMed Pty Ltd | 1995 |
3 |
| China Tobacco Hubei Industrial Corporation Limited | 78 |
3 |
| Salamander International Holdings LLC | 27 |
3 |
| Salamander International LLC | 27 |
3 |
| Dmcx7318 Ltd | 27 |
3 |
| Salamander IP Holdings LLC | 28 |
3 |
| Other owners | 153 |