- All sections
- G - Physics
- G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; apparatus or arrangements employing analogous techniques using waves other than optical waves; accessories 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: 64
10-year publication summary
7
|
10
|
7
|
12
|
6
|
7
|
3
|
3
|
2
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Seiko Epson Corporation | 18724 |
12 |
Dolby Laboratories Licensing Corporation | 3883 |
4 |
Canon Inc. | 36841 |
3 |
Barco N.V. | 478 |
3 |
Hand held Products, Inc. | 1227 |
2 |
National Research Council of Canada | 1545 |
2 |
Domeprojection.com GmbH | 4 |
2 |
Qualcomm Incorporated | 76576 |
1 |
The Regents of the University of California | 18943 |
1 |
The Boeing Company | 19843 |
1 |
Toshiba Medical Systems Corporation | 2236 |
1 |
Hewlett-Packard Development Company, L.P. | 28538 |
1 |
FUJIFILM Corporation | 27102 |
1 |
Texas Instruments Incorporated | 19376 |
1 |
Ricoh Company, Ltd. | 13266 |
1 |
Koninklijke Philips N.V. | 22975 |
1 |
Koninklijke Philips Electronics N.V. | 13133 |
1 |
Mitsubishi Electric Corporation | 43934 |
1 |
Huawei Technologies Co., Ltd. | 100781 |
1 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
1 |
Other owners | 23 |