- 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 | 19319 |
12 |
| Dolby Laboratories Licensing Corporation | 4116 |
4 |
| Canon Inc. | 39713 |
3 |
| Barco N.V. | 537 |
3 |
| Mitsubishi Electric Corporation | 45962 |
2 |
| Hand held Products, Inc. | 1260 |
2 |
| National Research Council of Canada | 1549 |
2 |
| Domeprojection.com GmbH | 4 |
2 |
| Qualcomm Incorporated | 84971 |
1 |
| The Regents of the University of California | 19868 |
1 |
| The Boeing Company | 20042 |
1 |
| Toshiba Medical Systems Corporation | 2126 |
1 |
| FUJIFILM Corporation | 29305 |
1 |
| Texas Instruments Incorporated | 19480 |
1 |
| Ricoh Company, Ltd. | 13247 |
1 |
| Koninklijke Philips N.V. | 24718 |
1 |
| Koninklijke Philips Electronics N.V. | 9765 |
1 |
| Huawei Technologies Co., Ltd. | 111975 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
1 |
| Casio Computer Co., Ltd. | 3423 |
1 |
| Other owners | 23 |