- All sections
- H - Electricity
- H01S - Devices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate lightdevices using stimulated emission of electromagnetic radiation in wave ranges other than optical
- H01S 5/50 - Amplifier structures not provided for in groups
Patent holdings for IPC class H01S 5/50
Total number of patents in this class: 598
10-year publication summary
|
45
|
44
|
54
|
54
|
45
|
42
|
55
|
38
|
36
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Furukawa Electric Co., Ltd. | 3695 |
31 |
| Huawei Technologies Co., Ltd. | 124115 |
28 |
| Sony Corporation | 30111 |
17 |
| Mitsubishi Electric Corporation | 48172 |
17 |
| Sumitomo Electric Device Innovations, Inc. | 472 |
17 |
| Nippon Telegraph and Telephone Corporation | 15939 |
15 |
| Wells Fargo Bank, National Association, AS Collateral Agent | 884 |
15 |
| Oracle International Corporation | 13611 |
13 |
| NEC Corporation | 37168 |
11 |
| II-VI Delaware, Inc. | 1619 |
10 |
| OpenLight Photonics, Inc | 200 |
10 |
| International Business Machines Corporation | 62748 |
9 |
| Intel Corporation | 47178 |
9 |
| Fujitsu Limited | 16854 |
9 |
| Gigaphoton Inc. | 1328 |
8 |
| Alcatel Lucent | 4308 |
8 |
| Fujitsu Optical Components Limited | 298 |
7 |
| Cisco Technology, Inc. | 22555 |
7 |
| Sumitomo Electric Industries, Ltd. | 16448 |
6 |
| Samsung Electronics Co., Ltd. | 158442 |
5 |
| Other owners | 346 |