- All sections
- B - Performing operations; transporting
- B23B - Turning; boring
- B23B 21/00 - Lathe carriages; Cross-slides; Tool posts; Similar parts of any machine tools
Patent holdings for IPC class B23B 21/00
Total number of patents in this class: 59
10-year publication summary
|
4
|
8
|
6
|
4
|
6
|
1
|
3
|
4
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Machinery, Ltd. | 1386 |
8 |
| Star Micronics Co., Ltd. | 266 |
7 |
| citizen Holdings Co., Ltd. | 332 |
4 |
| citizen Machinery Co., Ltd. | 176 |
4 |
| citizen Watch Co., Ltd. | 1062 |
3 |
| DMG MORI Co., Ltd. | 751 |
3 |
| Toshiba Kikai Kabushiki Kaisha | 300 |
3 |
| citizen Machinery Miyano Co., Ltd. | 27 |
2 |
| Fuji Machine Mfg. Co., Ltd. | 982 |
2 |
| Sumitomo Electric Hardmetal Corp. | 969 |
1 |
| Kyocera Corporation | 12735 |
1 |
| Seiko Instruments Inc. | 660 |
1 |
| NTN Corporation | 5008 |
1 |
| NSK Ltd. | 2719 |
1 |
| Aisin Kiko Co., Ltd. | 6 |
1 |
| Dexerials Corporation | 1826 |
1 |
| Fuji Corporation | 2924 |
1 |
| Kanzaki Kokyukoki Mfg. Co., Ltd. | 193 |
1 |
| Kennametal Widia Produktions GmbH & Co. KG | 34 |
1 |
| Kingsand Machinery Ltd. | 12 |
1 |
| Other owners | 12 |