- All sections
- B - Performing operationstransporting
- B23B - Turningboring
- B23B 31/20 - Longitudinally-split sleeves, e.g. collet chucks
Patent holdings for IPC class B23B 31/20
Total number of patents in this class: 347
10-year publication summary
|
39
|
30
|
39
|
40
|
29
|
27
|
13
|
20
|
13
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Franz Haimer Maschinenbau KG | 143 |
27 |
| Iscar, Ltd. | 1132 |
14 |
| Kennametal Inc. | 1390 |
13 |
| Star Micronics Co., Ltd. | 283 |
13 |
| Haimer GmbH | 73 |
10 |
| Robert Bosch GmbH | 42742 |
9 |
| Schaublin SA | 38 |
9 |
| Hainbuch GmbH Spannende Technik | 37 |
8 |
| Black & Decker, Inc. | 2408 |
7 |
| Rego-Fix AG | 37 |
7 |
| Shin-yain Industrial Co., Ltd. | 29 |
7 |
| JBS System GmbH | 6 |
6 |
| Gyrus ACMI, Inc. | 1220 |
5 |
| GSI Group Limited | 24 |
5 |
| Big Daishowa Co., Ltd. | 85 |
5 |
| Techtronic Cordless GP, Gainful Plan Trading Limited, an entity organized in the British Virgin Islands and TTI Finance Ltd., an entity organized in the British Virgin Islands | 1597 |
5 |
| Albrecht Präzision GmbH & Co. KG | 11 |
4 |
| ANCA Pty Ltd | 42 |
4 |
| citizen Machinery Co., Ltd. | 195 |
4 |
| citizen Watch Co., Ltd. | 1076 |
4 |
| Other owners | 181 |