- 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: 555
10-year publication summary
|
45
|
52
|
39
|
62
|
70
|
59
|
62
|
35
|
54
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5205 |
53 |
| Watlow Electric Manufacturing Company | 587 |
28 |
| Kyocera Corporation | 14195 |
17 |
| Niterra Co., Ltd. | 1355 |
17 |
| Applied Materials, Inc. | 19717 |
12 |
| Goodrich Corporation | 2189 |
12 |
| MICO Ceramics Ltd. | 66 |
12 |
| Tokyo Electron Limited | 13410 |
11 |
| Rolls-Royce PLC | 3173 |
11 |
| 3D Print Innovations, LLC | 53 |
9 |
| NHK Spring Co., Ltd. | 1931 |
8 |
| Lam Research Corporation | 5452 |
7 |
| Altria Client Services LLC | 2327 |
6 |
| Eberspacher catem GmbH & Co. KG | 99 |
6 |
| Semes Co., Ltd. | 1558 |
6 |
| Samsung Electronics Co., Ltd. | 151726 |
5 |
| LG Electronics Inc. | 74447 |
5 |
| LG Innotek Co., Ltd. | 8062 |
5 |
| Lexmark International, Inc. | 1601 |
5 |
| ASM IP Holding B.V. | 2233 |
5 |
| Other owners | 315 |