- 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: 1081
10-year publication summary
|
88
|
80
|
109
|
91
|
96
|
111
|
98
|
67
|
65
|
50
|
| 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 | 17367 |
60 |
| Sumitomo Electric Industries, Ltd. | 15535 |
43 |
| Hamamatsu Photonics K.K. | 4426 |
40 |
| Lumentum Japan, Inc. | 227 |
37 |
| Mitsubishi Electric Corporation | 46249 |
35 |
| Huawei Technologies Co., Ltd. | 113191 |
34 |
| Sumitomo Electric Device Innovations, Inc. | 448 |
24 |
| The Furukawa Electric Co., Ltd. | 3670 |
23 |
| Fujitsu Limited | 18404 |
18 |
| II-VI Delaware, Inc. | 1680 |
18 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10931 |
14 |
| Rockley Photonics Limited | 337 |
14 |
| Kyoto University | 2803 |
13 |
| Electronics and Telecommunications Research Institute | 9408 |
11 |
| Toshiba Corporation | 12376 |
10 |
| Infinera Corporation | 635 |
10 |
| Lumentum Operations LLC | 738 |
10 |
| nLIGHT, Inc. | 412 |
10 |
| OSRAM Opto Semiconductors GmbH | 3310 |
9 |
| Marvell Asia PTE, Ltd. | 6532 |
9 |
| Other owners | 639 |