- All sections
- H - Electricity
- H01S - Devices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light; devices 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: 979
10-year publication summary
|
76
|
88
|
81
|
109
|
91
|
98
|
104
|
91
|
66
|
19
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 14195 |
47 |
| Sumitomo Electric Industries, Ltd. | 14131 |
42 |
| Lumentum Japan, Inc. | 240 |
35 |
| Hamamatsu Photonics K.K. | 4161 |
34 |
| Mitsubishi Electric Corporation | 43934 |
32 |
| Huawei Technologies Co., Ltd. | 100781 |
31 |
| The Furukawa Electric Co., Ltd. | 3486 |
22 |
| Sumitomo Electric Device Innovations, Inc. | 405 |
21 |
| Fujitsu Limited | 19265 |
18 |
| II-VI Delaware, Inc. | 1720 |
17 |
| Kyoto University | 2732 |
16 |
| Rockley Photonics Limited | 399 |
15 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
11 |
| Toshiba Corporation | 12017 |
10 |
| nLIGHT, Inc. | 380 |
10 |
| Electronics and Telecommunications Research Institute | 8830 |
9 |
| OSRAM Opto Semiconductors GmbH | 3390 |
9 |
| Freedom Photonics, LLC. | 31 |
9 |
| Infinera Corporation | 620 |
9 |
| Samsung Electronics Co., Ltd. | 131630 |
8 |
| Other owners | 574 |