Assignee
CHINA RAILWAY NO 4 ENG GROUP
CN·1 granted patent·3 pending applications·1 citations·filing 2024–2025
Top patents by PatentIndex Score
4 records- 0175US12303966B1Molding machines for flexible production of rebars of bottom, web, and top plates of precast small box girders and methods for using thereofCHINA RAILWAY NO 4 ENG GROUP·Filed 2024·Granted May 20, 2025·1 cites·9 claims
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- 0342US2025154059A1Low-alkali accelerator and preparation methodCHINA RAILWAY NO 4 ENG GROUP·Filed 2025·Application pending·0 cites
- 0440US2025243112A1Method for increasing amount of air-quenched steel slag aggregate in concreteCHINA RAILWAY NO 4 ENG GROUP·Filed 2025·Application pending·0 cites
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