- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit 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: 470
10-year publication summary
|
15
|
19
|
47
|
55
|
43
|
67
|
72
|
57
|
60
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4589 |
42 |
| Watlow Electric Manufacturing Company | 569 |
30 |
| Kyocera Corporation | 12735 |
16 |
| Niterra Co., Ltd. | 1122 |
14 |
| Goodrich Corporation | 2081 |
12 |
| Rolls-Royce PLC | 2944 |
11 |
| Tokyo Electron Limited | 11599 |
9 |
| Jabil Inc. | 474 |
9 |
| MICO Ceramics Ltd. | 42 |
8 |
| NHK Spring Co., Ltd. | 1657 |
7 |
| Applied Materials, Inc. | 16587 |
6 |
| Lam Research Corporation | 4775 |
6 |
| Eberspacher catem GmbH & Co. KG | 92 |
6 |
| LG Electronics Inc. | 69257 |
5 |
| Robert Bosch GmbH | 40953 |
5 |
| Lexmark International, Inc. | 1793 |
5 |
| Altria Client Services LLC | 1866 |
5 |
| MP Global Products, LLC | 80 |
5 |
| Progress Profiles SpA | 93 |
5 |
| Toto Ltd. | 1096 |
5 |
| Other owners | 259 |