- All sections
- B - Performing operations; transporting
- B21H - Making particular metal objects by rolling, e.g. screws, wheels, rings, barrels, balls
- B21H 3/04 - Making by means of profiled rolls
Patent holdings for IPC class B21H 3/04
Total number of patents in this class: 89
10-year publication summary
10
|
11
|
6
|
10
|
5
|
11
|
7
|
8
|
3
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NSK Ltd. | 2719 |
13 |
Shanghai Pan-China Fastening System Co., Ltd. | 9 |
6 |
LMT Fette Werkzeugtechnik GmbH & Co. KG | 15 |
5 |
Physical Systems, Inc. | 43 |
4 |
NGK Spark Plug Co., Ltd. | 935 |
3 |
Ball Corporation | 390 |
3 |
Belvac Production Machinery, Inc. | 132 |
3 |
Hitachi Astemo, Ltd. | 5618 |
3 |
Schlumberger Technology Corporation | 9690 |
2 |
Illinois Tool Works Inc. | 11152 |
2 |
Kennametal Inc. | 1380 |
2 |
Gottfried Wilhelm Leibniz Universität Hannover | 148 |
2 |
Kamax Holding GmbH & Co. KG | 139 |
2 |
Reed Machinery Inc. | 3 |
2 |
Shanghai Pan-China Fastening Systems Co., Ltd. | 3 |
2 |
Hitachi Automotive Systems, Ltd. | 3970 |
1 |
Robert Bosch GmbH | 40953 |
1 |
Hilti Aktiengesellschaft | 3227 |
1 |
Ankara Industries, Inc. | 2 |
1 |
Bi-mirth Corp. | 13 |
1 |
Other owners | 30 |