- All sections
- B - Performing operations; transporting
- B23K - Soldering or unsoldering; welding; cladding or plating by soldering or welding; cutting by applying heat locally, e.g. flame cutting; working by laser beam
- B23K 9/028 - Seam welding; Backing means; Inserts for curved planar seams
Patent holdings for IPC class B23K 9/028
Total number of patents in this class: 428
10-year publication summary
|
50
|
29
|
28
|
35
|
34
|
34
|
37
|
21
|
28
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Illinois Tool Works Inc. | 11152 |
36 |
| Lincoln Global, Inc. | 2180 |
32 |
| CRC-Evans Pipeline International, Inc. | 46 |
16 |
| Saipem S.p.A. | 513 |
12 |
| Serimax | 29 |
10 |
| Siemens AG | 24990 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
9 |
| JFE Steel Corporation | 6067 |
8 |
| Novarc Technologies Inc. | 32 |
8 |
| General Electric Technology GmbH | 1657 |
7 |
| ZF Friedrichshafen AG | 6820 |
6 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
5 |
| Caterpillar Inc. | 8877 |
4 |
| Saudi Arabian Oil Company | 11322 |
4 |
| Webco Industries, Inc. | 26 |
4 |
| Maus Italia SpA | 11 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
4 |
| Baker Hughes Holdings LLC | 3060 |
4 |
| Baker Hughes Incorporated | 5689 |
3 |
| Kawasaki Heavy Industries, Limited | 1524 |
3 |
| Other owners | 240 |