- 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: 1022
10-year publication summary
|
61
|
85
|
70
|
83
|
97
|
101
|
74
|
83
|
69
|
63
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 24783 |
52 |
| Lintec Corporation | 1993 |
35 |
| Watlow Electric Manufacturing Company | 584 |
32 |
| Kyocera Corporation | 14083 |
21 |
| Kurabe Industrial Co., Ltd. | 57 |
20 |
| KT & G Corporation | 2740 |
16 |
| Nippon Sheet Glass Company, Limited | 977 |
16 |
| RAI Strategic Holdings, Inc. | 1169 |
16 |
| Agc, Inc. | 5018 |
15 |
| LG Electronics Inc. | 73772 |
14 |
| FUJIFILM Corporation | 29817 |
12 |
| Dai Nippon Printing Co., Ltd. | 4146 |
12 |
| Applied Materials, Inc. | 19248 |
11 |
| NGK Insulators, Ltd. | 5144 |
11 |
| Tomoegawa Co., Ltd. | 242 |
10 |
| Nissha Co., Ltd. | 312 |
10 |
| Panasonic Corporation | 19966 |
8 |
| Nitto Denko Corporation | 8355 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 32457 |
8 |
| Goodrich Corporation | 2185 |
8 |
| Other owners | 687 |