Inventor · disambiguated record
I-Long Chang
Also filed as: CHANG I-LONG
3 granted patents·152 citations·filing 2001–2003
76Inventor score
Files withIND TECH RES INST3
Top patents by PatentIndex Score
3 records- 0193US6514311B1Clean process of recovering metals from waste lithium ion batteriesIND TECH RES INST·Filed 2001·Granted Feb 4, 2003·80 cites·11 claims
- 0289US6835228B1Process of recovering valuable metals from waste secondary batteriesIND TECH RES INST·Filed 2003·Granted Dec 28, 2004·58 cites·7 claims
- 0376US6764584B2Process for producing lithium concentrate from brine or seawaterIND TECH RES INST·Filed 2002·Granted Jul 20, 2004·14 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →