Inventor · disambiguated record
Chang Ra
Also filed as: RA CHANG H · RA CHANG-HO
3 granted patents·3 pending applications·33 citations·filing 1982–2012
68Inventor score
Top patents by PatentIndex Score
6 records- 0169US9067783B2Graphene-based photodetector including complex transparent electrode, method of manufacturing the same, and device including the sameCHOI JAE-YOUNG·Filed 2012·Granted Jun 30, 2015·2 cites·23 claims
- 0263US5668070ACeramic composition for absorbing electromagnetic wave and a method for manufacturing the sameFiled 1996·Granted Sep 16, 1997·24 cites·11 claims
- 0337US2006266979A1Ceramic powder emitting far infrared ray, high-density bio-stone manufactured by using the same and manufacturing method thereofCHANG HO RA·Filed 2006·Application pending·0 cites
- 0430US2001053464A1Telecommunication apparatus having electromagnetic wave absorbing deviceFiled 2001·Application pending·0 cites
- 0527US2005099342A1Device for reducing the electromagnetic wave of a mobile communication terminalFiled 2001·Application pending·0 cites
- 0626US4481560ASafety lamp with noctilucent lens holderNAMBANG CORP·Filed 1982·Granted Nov 6, 1984·7 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →