- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/08 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
Patent holdings for IPC class H03F 3/08
Total number of patents in this class: 699
10-year publication summary
|
46
|
66
|
58
|
58
|
41
|
32
|
23
|
27
|
19
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 16448 |
31 |
| Cisco Technology, Inc. | 22555 |
29 |
| Toshiba Corporation | 12594 |
17 |
| Mitsubishi Electric Corporation | 48172 |
14 |
| Nippon Telegraph and Telephone Corporation | 15939 |
13 |
| Texas Instruments Incorporated | 19640 |
12 |
| Raytheon Company | 8436 |
12 |
| Huawei Technologies Co., Ltd. | 124115 |
11 |
| Marvell Asia PTE, Ltd. | 6258 |
11 |
| Cavium International | 4585 |
11 |
| NEC Corporation | 37168 |
10 |
| Analog Devices, Inc. | 3320 |
10 |
| Hamamatsu Photonics K.K. | 4697 |
9 |
| Avago Technologies International Sales Pte. Limited | 8534 |
9 |
| Fujitsu Limited | 16854 |
8 |
| Hewlett Packard Enterprise Development LP | 11510 |
8 |
| II-VI Delaware, Inc. | 1619 |
8 |
| Samsung Electronics Co., Ltd. | 158442 |
7 |
| ams International AG | 447 |
7 |
| Semtech Corporation | 371 |
7 |
| Other owners | 455 |