- All sections
- G - Physics
- G02B - Optical elements, systems or apparatus
- G02B 15/22 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances
Patent holdings for IPC class G02B 15/22
Total number of patents in this class: 159
10-year publication summary
|
13
|
16
|
7
|
12
|
18
|
18
|
8
|
10
|
12
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nikon Corporation | 7226 |
27 |
| Canon Inc. | 43869 |
23 |
| FUJIFILM Corporation | 30516 |
19 |
| Navitar, Inc. | 75 |
15 |
| Panasonic Intellectual Property Management Co., Ltd. | 34035 |
12 |
| LG Innotek Co., Ltd. | 8486 |
10 |
| OM Digital Solutions Corp. | 587 |
9 |
| Samsung Electronics Co., Ltd. | 157946 |
4 |
| Ricoh Company, Ltd. | 13333 |
4 |
| Ricoh Imaging Company, Ltd. | 180 |
4 |
| Tamron Co., Ltd. | 228 |
3 |
| Sony Corporation | 30158 |
2 |
| Panasonic Corporation | 18962 |
2 |
| Atlas Lens Co. | 11 |
2 |
| Apple Inc. | 58885 |
1 |
| Seiko Epson Corporation | 20259 |
1 |
| Pentax Ricoh Imaging Company, Ltd. | 104 |
1 |
| Industrial Technology Research Institute | 5205 |
1 |
| Eastman Kodak Company | 2601 |
1 |
| Olympus Corporation | 12937 |
1 |
| Other owners | 17 |