Inventor · disambiguated record

Huan Chang

Also filed as: CHANG HUAN · Chang huan-sheng

2 granted patents·0 citations·filing 2020–2024

20Inventor score

Technology areasC21C G02B

Files withLARGAN PRECISION CO LTD1 XUANHUA IRON AND STEEL GROUP CO LTD1

Top patents by PatentIndex Score

2 records

0155US12234521B2Method for controlling nitrogen in steelmaking by spraying hydrogen containing plasmaXUANHUA IRON AND STEEL GROUP CO LTD·Filed 2024·Granted Feb 25, 2025·0 cites·5 claims
0244US11860447B2Imaging optical lens assembly, imaging apparatus and electronic deviceLARGAN PRECISION CO LTD·Filed 2020·Granted Jan 2, 2024·0 cites·28 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →