Patent holdings for IPC class C25D 5/50

Total number of patents in this class: 1016

10-year publication summary

102
99
86
68
64
63
68
65
60
27
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Nippon Steel Corporation
6255
61
Toyo Kohan Co., Ltd.
420
52
Sumitomo Electric Industries, Ltd.
15495
48
Mitsubishi Materials Corporation
2444
40
JFE Steel Corporation
6852
38
Sumitomo Wiring Systems, Ltd.
10363
34
AutoNetworks Technologies, Ltd.
6592
34
JX Nippon Mining & Metals Corporation
1488
26
POSCO Co., Ltd.
1568
20
The Furukawa Electric Co., Ltd.
3652
19
Nippon Steel & Sumitomo Metal Corporation
1988
16
Tata Steel Ijmuiden B.V.
312
16
Savroc Ltd
26
15
Dowa Metaltech Co., Ltd.
164
14
Rtx Corporation
9385
11
International Business Machines Corporation
61257
9
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
2874
9
ThyssenKrupp Steel Europe AG
955
9
Hitachi Metals, Ltd.
1983
7
Applied Materials, Inc.
18658
7
Other owners 531