- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/31 - Projection devices for colour picture display
Patent holdings for IPC class H04N 9/31
Total number of patents in this class: 7917
10-year publication summary
|
831
|
839
|
822
|
833
|
710
|
633
|
505
|
414
|
413
|
233
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20248 |
917 |
| Coretronic Corporation | 1370 |
316 |
| Sony Corporation | 30208 |
290 |
| Samsung Electronics Co., Ltd. | 157557 |
283 |
| Dolby Laboratories Licensing Corporation | 4320 |
180 |
| Appotronics Corporation Limited | 1132 |
174 |
| Panasonic Projector & Display Corporation | 484 |
150 |
| Canon Inc. | 43768 |
144 |
| Hisense Laser Display Co., Ltd. | 455 |
134 |
| Ricoh Company, Ltd. | 13346 |
126 |
| Maxell, Ltd. | 3015 |
124 |
| FUJIFILM Corporation | 30512 |
110 |
| Texas Instruments Incorporated | 19663 |
108 |
| Casio Computer Co., Ltd. | 3502 |
101 |
| Google LLC | 44482 |
97 |
| Maxell Holdings, Ltd. | 1259 |
86 |
| Microsoft Technology Licensing, LLC | 54439 |
83 |
| Sharp NEC Display Solutions, Ltd. | 536 |
82 |
| JVC Kenwood Corporation | 3133 |
74 |
| LG Electronics Inc. | 75654 |
69 |
| Other owners | 4269 |