- All sections
- G - Physics
- G02F - Optical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein; non-linear optics; frequency-changing of light; optical logic elements; optical analogue/digital converters
- G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
Patent holdings for IPC class G02F 1/21
Total number of patents in this class: 1266
10-year publication summary
105
|
99
|
132
|
136
|
129
|
123
|
132
|
154
|
131
|
35
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Osaka Cement Co., Ltd. | 783 |
81 |
Fujitsu Optical Components Limited | 266 |
55 |
Sumitomo Electric Industries, Ltd. | 14131 |
47 |
Nippon Telegraph and Telephone Corporation | 14195 |
41 |
Cisco Technology, Inc. | 18858 |
35 |
TDK Corporation | 6306 |
31 |
Marvell Asia PTE, Ltd. | 6841 |
28 |
Nokia Solutions And Networks Oy | 5698 |
27 |
Ciena Corporation | 1927 |
25 |
Psiquantum, Corp. | 300 |
25 |
NEC Corporation | 32703 |
24 |
Cavium International | 5549 |
24 |
Huawei Technologies Co., Ltd. | 100781 |
21 |
Massachusetts Institute of Technology | 9795 |
21 |
Samsung Electronics Co., Ltd. | 131630 |
20 |
Fujitsu Limited | 19265 |
19 |
Mitsubishi Electric Corporation | 43934 |
17 |
California Institute of Technology | 3884 |
16 |
NeoPhotonics Corporation | 127 |
16 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
13 |
Other owners | 680 |