- All sections
- B - Performing operationstransporting
- B23B - Turningboring
- B23B 51/02 - Twist drills
Patent holdings for IPC class B23B 51/02
Total number of patents in this class: 780
10-year publication summary
|
48
|
57
|
63
|
70
|
58
|
52
|
42
|
30
|
45
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kennametal Inc. | 1378 |
125 |
| Iscar, Ltd. | 1122 |
59 |
| Kyocera Corporation | 14034 |
37 |
| Robert Bosch GmbH | 42984 |
27 |
| Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG | 135 |
25 |
| Sandvik Intellectual Property AB | 1460 |
25 |
| Hilti Aktiengesellschaft | 3522 |
22 |
| Sumitomo Electric Hardmetal Corp. | 1044 |
21 |
| Milwaukee Electric Tool Corporation | 4542 |
20 |
| OSG Corporation | 348 |
17 |
| TaeguTec, Ltd. | 179 |
14 |
| Black & Decker, Inc. | 2402 |
13 |
| Mitsubishi Materials Corporation | 2472 |
11 |
| Subaru Corporation | 3691 |
11 |
| Gühring oHG | 67 |
10 |
| Korloy Inc. | 254 |
9 |
| SECO Tools AB | 453 |
9 |
| AB Sandvik Coromant | 254 |
8 |
| Allied Machine & Engineering Corp. | 102 |
8 |
| Shenzhen Jinzhou Precision Technology Corp. | 24 |
8 |
| Other owners | 301 |