- 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 |