- 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: 7953
10-year publication summary
|
831
|
839
|
822
|
833
|
710
|
633
|
506
|
417
|
412
|
278
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20365 |
923 |
| Coretronic Corporation | 1374 |
316 |
| Sony Corporation | 30097 |
290 |
| Samsung Electronics Co., Ltd. | 158605 |
289 |
| Dolby Laboratories Licensing Corporation | 4363 |
181 |
| Appotronics Corporation Limited | 1135 |
174 |
| Panasonic Projector & Display Corporation | 489 |
151 |
| Canon Inc. | 44134 |
144 |
| Hisense Laser Display Co., Ltd. | 456 |
136 |
| Ricoh Company, Ltd. | 13334 |
126 |
| Maxell, Ltd. | 3066 |
125 |
| FUJIFILM Corporation | 30628 |
110 |
| Texas Instruments Incorporated | 19639 |
108 |
| Casio Computer Co., Ltd. | 3491 |
101 |
| Google LLC | 44674 |
97 |
| Maxell Holdings, Ltd. | 1255 |
86 |
| Microsoft Technology Licensing, LLC | 54524 |
83 |
| JVC Kenwood Corporation | 3136 |
74 |
| Sharp Corporation | 10847 |
73 |
| LG Electronics Inc. | 75910 |
70 |
| Other owners | 4296 |