- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 3/20 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
Patent holdings for IPC class H05B 3/20
Total number of patents in this class: 1007
10-year publication summary
|
61
|
85
|
70
|
83
|
97
|
101
|
74
|
83
|
69
|
49
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 24431 |
52 |
| Lintec Corporation | 1968 |
34 |
| Watlow Electric Manufacturing Company | 581 |
32 |
| Kyocera Corporation | 13909 |
21 |
| Kurabe Industrial Co., Ltd. | 56 |
20 |
| Nippon Sheet Glass Company, Limited | 984 |
16 |
| RAI Strategic Holdings, Inc. | 1163 |
15 |
| LG Electronics Inc. | 73531 |
14 |
| KT & G Corporation | 2648 |
14 |
| Agc, Inc. | 4913 |
14 |
| FUJIFILM Corporation | 29543 |
12 |
| Dai Nippon Printing Co., Ltd. | 4113 |
12 |
| Applied Materials, Inc. | 18861 |
11 |
| NGK Insulators, Ltd. | 5016 |
10 |
| Tomoegawa Co., Ltd. | 244 |
10 |
| Nissha Co., Ltd. | 309 |
10 |
| Panasonic Corporation | 20050 |
8 |
| Nitto Denko Corporation | 8280 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 31806 |
8 |
| Goodrich Corporation | 2141 |
8 |
| Other owners | 678 |