- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit 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: 919
10-year publication summary
|
39
|
62
|
88
|
77
|
92
|
100
|
107
|
75
|
81
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 23338 |
50 |
| Lintec Corporation | 1915 |
32 |
| Watlow Electric Manufacturing Company | 569 |
30 |
| Kurabe Industrial Co., Ltd. | 52 |
19 |
| Kyocera Corporation | 12735 |
17 |
| Nippon Sheet Glass Company, Limited | 992 |
15 |
| LG Electronics Inc. | 69257 |
14 |
| Dai Nippon Printing Co., Ltd. | 3891 |
13 |
| FUJIFILM Corporation | 27102 |
12 |
| Agc, Inc. | 4029 |
12 |
| Applied Materials, Inc. | 16587 |
11 |
| KT & G Corporation | 1876 |
10 |
| RAI Strategic Holdings, Inc. | 1026 |
10 |
| Tomoegawa Co., Ltd. | 252 |
10 |
| Panasonic Corporation | 20786 |
8 |
| Nitto Denko Corporation | 7879 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
8 |
| NGK Insulators, Ltd. | 4589 |
8 |
| Goodrich Corporation | 2081 |
8 |
| Nifco Inc. | 1103 |
7 |
| Other owners | 617 |