- All sections
- B - Performing operationstransporting
- B23B - Turningboring
- B23B 21/00 - Lathe carriagesCross-slidesTool postsSimilar parts of any machine tools
Patent holdings for IPC class B23B 21/00
Total number of patents in this class: 64
10-year publication summary
|
8
|
6
|
4
|
6
|
1
|
3
|
4
|
2
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Machinery, Ltd. | 1500 |
8 |
| Star Micronics Co., Ltd. | 282 |
7 |
| citizen Machinery Co., Ltd. | 195 |
6 |
| citizen Watch Co., Ltd. | 1076 |
5 |
| citizen Holdings Co., Ltd. | 306 |
4 |
| DMG MORI Co., Ltd. | 865 |
3 |
| Toshiba Kikai Kabushiki Kaisha | 285 |
3 |
| citizen Machinery Miyano Co., Ltd. | 27 |
2 |
| Fuji Machine Mfg. Co., Ltd. | 979 |
2 |
| Sumitomo Electric Hardmetal Corp. | 1027 |
1 |
| Kyocera Corporation | 13831 |
1 |
| Seiko Instruments Inc. | 503 |
1 |
| NTN Corporation | 4976 |
1 |
| NSK Ltd. | 2780 |
1 |
| Aisin Kiko Co., Ltd. | 5 |
1 |
| Arthrex, Inc. | 1412 |
1 |
| Dexerials Corporation | 1967 |
1 |
| Fuji Corporation | 3361 |
1 |
| Kanzaki Kokyukoki Mfg. Co., Ltd. | 189 |
1 |
| Kennametal Widia Produktions GmbH & Co. KG | 27 |
1 |
| Other owners | 13 |