- 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: 701
10-year publication summary
|
46
|
66
|
58
|
58
|
41
|
32
|
23
|
27
|
18
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 16273 |
31 |
| Cisco Technology, Inc. | 22479 |
29 |
| Toshiba Corporation | 12551 |
17 |
| Mitsubishi Electric Corporation | 47893 |
14 |
| Nippon Telegraph and Telephone Corporation | 15921 |
13 |
| Texas Instruments Incorporated | 19660 |
12 |
| Raytheon Company | 8460 |
12 |
| Huawei Technologies Co., Ltd. | 122656 |
11 |
| Marvell Asia PTE, Ltd. | 6317 |
11 |
| Cavium International | 4687 |
11 |
| NEC Corporation | 36830 |
10 |
| Analog Devices, Inc. | 3323 |
10 |
| Hamamatsu Photonics K.K. | 4654 |
10 |
| Avago Technologies International Sales Pte. Limited | 8566 |
9 |
| Fujitsu Limited | 16873 |
8 |
| Hewlett Packard Enterprise Development LP | 11006 |
8 |
| II-VI Delaware, Inc. | 1625 |
8 |
| Samsung Electronics Co., Ltd. | 157039 |
7 |
| ams International AG | 446 |
7 |
| Semtech Corporation | 369 |
7 |
| Other owners | 456 |