- 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: 575
10-year publication summary
|
47
|
56
|
43
|
68
|
75
|
63
|
64
|
38
|
54
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5236 |
57 |
| Watlow Electric Manufacturing Company | 577 |
26 |
| Niterra Co., Ltd. | 1401 |
18 |
| Kyocera Corporation | 14359 |
17 |
| Applied Materials, Inc. | 20375 |
13 |
| Goodrich Corporation | 2182 |
12 |
| MICO Ceramics Ltd. | 71 |
12 |
| Tokyo Electron Limited | 13807 |
11 |
| Rolls-Royce PLC | 3221 |
11 |
| 3D Print Innovations, LLC | 54 |
9 |
| NHK Spring Co., Ltd. | 1983 |
8 |
| LG Innotek Co., Ltd. | 8466 |
7 |
| Lam Research Corporation | 5635 |
7 |
| ASM IP Holding B.V. | 2397 |
7 |
| Altria Client Services LLC | 2435 |
6 |
| Eberspacher catem GmbH & Co. KG | 102 |
6 |
| Semes Co., Ltd. | 1678 |
6 |
| Samsung Electronics Co., Ltd. | 157719 |
5 |
| LG Electronics Inc. | 75694 |
5 |
| Lexmark International, Inc. | 1540 |
5 |
| Other owners | 327 |