- 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: 7296
10-year publication summary
|
616
|
804
|
831
|
839
|
822
|
831
|
703
|
627
|
489
|
142
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
805 |
| Sony Corporation | 32931 |
305 |
| Coretronic Corporation | 1165 |
263 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
188 |
| Appotronics Corporation Limited | 1111 |
172 |
| Dolby Laboratories Licensing Corporation | 3883 |
164 |
| Canon Inc. | 36841 |
153 |
| Samsung Electronics Co., Ltd. | 131630 |
138 |
| Ricoh Company, Ltd. | 13266 |
125 |
| Maxell, Ltd. | 2533 |
117 |
| Casio Computer Co., Ltd. | 3343 |
104 |
| Hisense Laser Display Co., Ltd. | 315 |
101 |
| FUJIFILM Corporation | 27102 |
94 |
| Google LLC | 38759 |
94 |
| Maxell Holdings, Ltd. | 1422 |
92 |
| Texas Instruments Incorporated | 19376 |
91 |
| Sharp NEC Display Solutions, Ltd. | 493 |
84 |
| Microsoft Technology Licensing, LLC | 51439 |
81 |
| JVC Kenwood Corporation | 2774 |
66 |
| Hewlett-Packard Development Company, L.P. | 28538 |
59 |
| Other owners | 4000 |