Assignee
QINGDAO QINGFLEX HOSE FACTORY
CN·2 granted patents·2 citations·filing 2023–2025
Top patents by PatentIndex Score
2 records- 0188US12109777B1Acid fracturing hose and preparation method thereofQINGDAO QINGFLEX HOSE FACTORY·Filed 2023·Granted Oct 8, 2024·2 cites·8 claims
- 0250US12510195B1Steel wire pre-embedded integrated full-bore acid fracturing hose assembly and preparation method thereofQINGDAO QINGFLEX HOSE FACTORY·Filed 2025·Granted Dec 30, 2025·0 cites·5 claims
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