Inventor · disambiguated record
Chang-Tzu Chen
Also filed as: CHEN CHANG-TZU
3 granted patents·6 pending applications·14 citations·filing 2004–2024
63Inventor score
Technology areasA61M
Files withCHEN CHANG-TZU7
Top patents by PatentIndex Score
9 records- 0158US8105276B2Disposable safety injection apparatusCHEN CHANG-TZU·Filed 2006·Granted Jan 31, 2012·7 cites·11 claims
- 0252US2025229035A1Freeze-dry powder injector restoring deviceCHEN CHANG TZU·Filed 2024·Application pending·0 cites
- 0349US7621888B2Safety hypodermic syringeCHEN CHANG-TZU·Filed 2006·Granted Nov 24, 2009·1 cites·7 claims
- 0446US2024066230A1Freeze-dry powder injector restoring deviceCHEN CHANG TZU·Filed 2022·Application pending·0 cites
- 0542US6908450B1Syringe protective structureFiled 2004·Granted Jun 21, 2005·6 cites·9 claims
- 0636US2007173758A1Safety hypodermic syringeCHEN CHANG-TZU·Filed 2006·Application pending·0 cites
- 0734US2006264826A1Self-destructive safety syringeCHEN CHANG-TZU·Filed 2005·Application pending·0 cites
- 0834US2006111678A1Syringe protective structureCHEN CHANG-TZU·Filed 2004·Application pending·0 cites
- 0927US2005101918A1Protective injection needleFiled 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →