Individual holder
CHANG JUNG C
TW·3 granted patents·238 citations·filing 1989–1989
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0193US4912349APivotally adjustable electric hand toolCHANG JUNG C·Filed 1989·Granted Mar 27, 1990·115 cites·8 claims
- 0291US4932294ADIY electric hand tool having a chamber for accommodating tool heads not in useCHANG JUNG C·Filed 1989·Granted Jun 12, 1990·93 cites·5 claims
- 0386USD323606SElectric drillCHANG JUNG C·Filed 1989·Granted Feb 4, 1992·30 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →