- 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 5/12 - Construction or shape of the optical resonator the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
Patent holdings for IPC class H01S 5/12
Total number of patents in this class: 1041
10-year publication summary
|
88
|
81
|
109
|
91
|
98
|
110
|
97
|
67
|
64
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 16416 |
56 |
| Sumitomo Electric Industries, Ltd. | 15015 |
42 |
| Hamamatsu Photonics K.K. | 4313 |
39 |
| Lumentum Japan, Inc. | 233 |
37 |
| Mitsubishi Electric Corporation | 44962 |
34 |
| Huawei Technologies Co., Ltd. | 107154 |
32 |
| Sumitomo Electric Device Innovations, Inc. | 422 |
23 |
| The Furukawa Electric Co., Ltd. | 3601 |
22 |
| Fujitsu Limited | 18417 |
18 |
| II-VI Delaware, Inc. | 1717 |
18 |
| Kyoto University | 2779 |
15 |
| Rockley Photonics Limited | 337 |
14 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10700 |
11 |
| Toshiba Corporation | 12076 |
10 |
| Electronics and Telecommunications Research Institute | 9039 |
10 |
| Infinera Corporation | 626 |
10 |
| nLIGHT, Inc. | 397 |
10 |
| OSRAM Opto Semiconductors GmbH | 3335 |
9 |
| Lumentum Operations LLC | 715 |
9 |
| Samsung Electronics Co., Ltd. | 139551 |
8 |
| Other owners | 614 |