- All sections
- B - Performing operationstransporting
- B24B - Machines, devices, or processes for grinding or polishingdressing or conditioning of abrading surfacesfeeding of grinding, polishing, or lapping agents
- B24B 21/04 - Machines or devices using grinding or polishing beltsAccessories therefor for grinding plane surfaces
Patent holdings for IPC class B24B 21/04
Total number of patents in this class: 60
10-year publication summary
|
4
|
4
|
8
|
4
|
10
|
5
|
5
|
3
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ebara Corporation | 2083 |
3 |
| Hymmen GmbH Maschinen- und Anlagenbau | 32 |
3 |
| Lissmac Maschinenbau GmbH | 20 |
3 |
| Supfina Grieshaber GmbH & Co. KG | 81 |
3 |
| HOMAG Bohrsysteme GmbH | 40 |
3 |
| Sumitomo Electric Industries, Ltd. | 14990 |
2 |
| Applied Materials, Inc. | 17779 |
2 |
| HOMAG GmbH | 255 |
2 |
| HKC Corporation Limited | 3192 |
2 |
| Chongqing HKC Optoelectronics Technology Co., ltd. | 1336 |
2 |
| Surfaces Technological Abrasives S.p.A. | 6 |
2 |
| Samsung Electronics Co., Ltd. | 139302 |
1 |
| 3m Innovative Properties Company | 17969 |
1 |
| Micron Technology, Inc. | 25845 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 40644 |
1 |
| Corning Incorporated | 10139 |
1 |
| Tsinghua University | 5708 |
1 |
| Anchor Wall Systems, Inc. | 209 |
1 |
| Bando Chemical Industries, Ltd. | 581 |
1 |
| Berndorf Band GmbH | 113 |
1 |
| Other owners | 24 |