Inventor · disambiguated record

Hou Chang

Also filed as: CHANG HOU C · CHANG HOU-SHENG

1 granted patent·1 pending application·10 citations·filing 1999–2003

32Inventor score

Technology areasB23Q C30B

Top patents by PatentIndex Score

2 records

0128US6203458B1Speed adjusting device for a drill pressFiled 1999·Granted Mar 20, 2001·10 cites·4 claims
0223US2005101133A1Method for making negative thermal expansion material zirconium tungstateFiled 2003·Application pending·0 cites

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