- All sections
- G - Physics
- G02B - Optical elements, systems or apparatus
- G02B 15/177 - 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 interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Patent holdings for IPC class G02B 15/177
Total number of patents in this class: 387
10-year publication summary
69
|
65
|
52
|
53
|
32
|
33
|
21
|
15
|
11
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Canon Inc. | 36841 |
77 |
FUJIFILM Corporation | 27102 |
63 |
Nikon Corporation | 7162 |
44 |
OM Digital Solutions Corp. | 706 |
23 |
Konica Minolta, Inc. | 8349 |
10 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
9 |
Olympus Corporation | 13667 |
8 |
Young Optics Inc. | 247 |
8 |
Sony Corporation | 32931 |
7 |
Ricoh Company, Ltd. | 13266 |
7 |
Samsung Electro-mechanics Co., Ltd. | 4798 |
7 |
Seiko Epson Corporation | 18724 |
5 |
Ricoh Imaging Company, Ltd. | 153 |
5 |
Hoya Corporation | 2822 |
5 |
Ability Opto-Electronics Technology Co., Ltd. | 362 |
5 |
Nittoh Inc. | 96 |
5 |
Hanwha Vision Co., Ltd. | 568 |
5 |
Ability Enterprise Co., Ltd. | 88 |
4 |
Cooke Optics Limited | 44 |
4 |
Coretronic Corporation | 1165 |
4 |
Other owners | 82 |