- 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 21/18 - Fire preventing or extinguishing
Patent holdings for IPC class G03B 21/18
Total number of patents in this class: 77
10-year publication summary
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1
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0
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0
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1
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0
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0
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0
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19352 |
22 |
| Sanyo Electric Co., Ltd. | 3688 |
8 |
| Coretronic Corporation | 1280 |
5 |
| Qisda Corporation | 471 |
4 |
| SANYO Technology Center (Shenzhen) Co., Ltd. | 29 |
4 |
| Canon Inc. | 39888 |
3 |
| Casio Computer Co., Ltd. | 3431 |
3 |
| Delta Electronics, Inc. | 2605 |
3 |
| Samsung Electronics Co., Ltd. | 146092 |
2 |
| Sony Corporation | 31052 |
2 |
| Ricoh Company, Ltd. | 13247 |
2 |
| Dell Products L.P. | 14479 |
2 |
| Christie Digital Systems USA, Inc. | 168 |
2 |
| Young Green Energy Co. | 6 |
2 |
| Sharp NEC Display Solutions, Ltd. | 519 |
2 |
| Panasonic Holdings Corporation | 1737 |
2 |
| The Boeing Company | 20043 |
1 |
| Texas Instruments Incorporated | 19470 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 31375 |
1 |
| Konica Minolta Opto, Inc. | 1082 |
1 |
| Other owners | 5 |