Patent holdings for IPC class E02D 5/16

Total number of patents in this class: 9

10-year publication summary

3
5
1
4
1
0
0
1
1
0
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Nippon Steel & Sumitomo Metal Corporation
1981
4
CMI Limited Company
46
2
Pnd Engineers, Inc.
21
1
J.D. Fields & Company, Inc.
2
1
China Harbour Engineering Company Ltd.
98
1
Other owners 0