- All sections
- G - Physics
- G03B - Apparatus or arrangements for taking photographs or for projecting or viewing themapparatus or arrangements employing analogous techniques using waves other than optical wavesaccessories therefor
- G03B 21/20 - Lamp housings
Patent holdings for IPC class G03B 21/20
Total number of patents in this class: 5368
10-year publication summary
|
390
|
523
|
656
|
579
|
483
|
464
|
359
|
313
|
310
|
106
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20043 |
693 |
| Coretronic Corporation | 1345 |
469 |
| Appotronics Corporation Limited | 1130 |
405 |
| Hisense Laser Display Co., Ltd. | 447 |
209 |
| Sony Corporation | 30353 |
171 |
| Panasonic Intellectual Property Management Co., Ltd. | 33690 |
156 |
| Casio Computer Co., Ltd. | 3493 |
156 |
| Ricoh Company, Ltd. | 13303 |
125 |
| Delta Electronics, Inc. | 2795 |
90 |
| Canon Inc. | 42505 |
89 |
| Sharp NEC Display Solutions, Ltd. | 539 |
88 |
| Dolby Laboratories Licensing Corporation | 4286 |
79 |
| Qisda Corporation | 506 |
73 |
| Signify Holding B.V. | 7915 |
70 |
| Maxell, Ltd. | 2952 |
58 |
| Barco N.V. | 556 |
57 |
| OSRAM GmbH | 2261 |
54 |
| Samsung Electronics Co., Ltd. | 154751 |
52 |
| Texas Instruments Incorporated | 19628 |
51 |
| Maxell Holdings, Ltd. | 1273 |
47 |
| Other owners | 2176 |