- 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
|
30
|
39
|
42
|
30
|
28
|
13
|
23
|
14
|
21
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Franz Haimer Maschinenbau KG | 141 |
26 |
| Star Micronics Co., Ltd. | 296 |
15 |
| Kennametal Inc. | 1355 |
13 |
| Iscar, Ltd. | 1082 |
13 |
| Haimer GmbH | 75 |
10 |
| Robert Bosch GmbH | 44291 |
9 |
| Schaublin SA | 38 |
9 |
| Rego-Fix AG | 38 |
8 |
| Hainbuch GmbH Spannende Technik | 37 |
7 |
| Shin-yain Industrial Co., Ltd. | 31 |
7 |
| JBS System GmbH | 7 |
7 |
| Black & Decker, Inc. | 2464 |
6 |
| Gyrus ACMI, Inc. | 1298 |
5 |
| Albrecht Präzision GmbH & Co. KG | 14 |
5 |
| Big Daishowa Co., Ltd. | 93 |
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 | 1607 |
5 |
| ANCA Pty Ltd | 39 |
4 |
| citizen Machinery Co., Ltd. | 213 |
4 |
| citizen Watch Co., Ltd. | 1093 |
4 |
| Noetic Technologies Inc. | 132 |
4 |
| Other owners | 181 |