Inventor
Shangwen SU
Inventor
CN
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling50%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution50%
PatentTitleYear
12,398,613Side door bolt-free ram blowout preventer2025Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2025Patents assigned to RONGSHENG MACHINERY MFT LTD OF HUABEI OILFIELD HEBEI (1)· patent assignee history
2025Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RONGSHENG MACHINERY MFT LTD OF HUABEI OILFIELD HEBEI | 1 | 2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 1 | 2025 |