- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 3/28 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
Patent holdings for IPC class H05B 3/28
Total number of patents in this class: 537
10-year publication summary
|
19
|
45
|
52
|
39
|
62
|
70
|
59
|
59
|
35
|
47
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5103 |
53 |
| Watlow Electric Manufacturing Company | 580 |
28 |
| Niterra Co., Ltd. | 1311 |
17 |
| Kyocera Corporation | 13962 |
16 |
| Goodrich Corporation | 2137 |
12 |
| Tokyo Electron Limited | 12979 |
11 |
| Rolls-Royce PLC | 3134 |
11 |
| MICO Ceramics Ltd. | 63 |
10 |
| Applied Materials, Inc. | 18932 |
9 |
| Jabil Inc. | 520 |
9 |
| NHK Spring Co., Ltd. | 1901 |
8 |
| Lam Research Corporation | 5311 |
7 |
| Altria Client Services LLC | 2226 |
6 |
| Eberspacher catem GmbH & Co. KG | 98 |
6 |
| Progress Profiles SpA | 95 |
6 |
| Semes Co., Ltd. | 1516 |
6 |
| Samsung Electronics Co., Ltd. | 147787 |
5 |
| LG Electronics Inc. | 73588 |
5 |
| Robert Bosch GmbH | 42815 |
5 |
| LG Innotek Co., Ltd. | 7823 |
5 |
| Other owners | 302 |