- All sections
- B - Performing operations; transporting
- B23B - Turning; boring
- B23B 31/40 - Expansion mandrels
Patent holdings for IPC class B23B 31/40
Total number of patents in this class: 136
10-year publication summary
|
12
|
14
|
22
|
11
|
13
|
12
|
17
|
15
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kuroda Precision Industries Ltd. | 103 |
6 |
| Franz Haimer Maschinenbau KG | 144 |
5 |
| The Gleason Works | 202 |
5 |
| Robert Bosch GmbH | 40953 |
4 |
| CITIC Dicastal CO., LTD | 531 |
4 |
| Hydra-Lock Corporation | 18 |
4 |
| Milwaukee Electric Tool Corporation | 3572 |
4 |
| Reishauer AG | 79 |
4 |
| Hainbuch GmbH Spannende Technik | 40 |
3 |
| Noetic Technologies Inc. | 126 |
3 |
| Sandvik Intellectual Property AB | 1634 |
3 |
| Schaublin SA | 39 |
3 |
| 3m Innovative Properties Company | 18406 |
2 |
| Xerox Corporation | 7503 |
2 |
| Robert Bosch Tool Corporation | 350 |
2 |
| GM Global Technology Operations LLC | 13620 |
2 |
| Makita Corporation | 2339 |
2 |
| EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge | 83 |
2 |
| Genevieve Swiss Industries, Inc. | 3 |
2 |
| Ludwig Ehrhardt GmbH | 21 |
2 |
| Other owners | 72 |