- 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 21/13 - Projectors for producing special effects at the edges of picture, e.g. blurring
Patent holdings for IPC class G03B 21/13
Total number of patents in this class: 65
10-year publication summary
|
10
|
7
|
12
|
6
|
7
|
4
|
3
|
2
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19020 |
12 |
| Dolby Laboratories Licensing Corporation | 4069 |
4 |
| Canon Inc. | 38296 |
3 |
| Barco N.V. | 532 |
3 |
| Mitsubishi Electric Corporation | 44962 |
2 |
| Hand held Products, Inc. | 1278 |
2 |
| National Research Council of Canada | 1573 |
2 |
| Domeprojection.com GmbH | 4 |
2 |
| Qualcomm Incorporated | 82165 |
1 |
| The Regents of the University of California | 19572 |
1 |
| The Boeing Company | 19922 |
1 |
| Toshiba Medical Systems Corporation | 2153 |
1 |
| Hewlett-Packard Development Company, L.P. | 27448 |
1 |
| FUJIFILM Corporation | 28841 |
1 |
| Texas Instruments Incorporated | 19443 |
1 |
| Ricoh Company, Ltd. | 13230 |
1 |
| Koninklijke Philips N.V. | 24106 |
1 |
| Koninklijke Philips Electronics N.V. | 10767 |
1 |
| Huawei Technologies Co., Ltd. | 107154 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 29895 |
1 |
| Other owners | 23 |