Inventor · disambiguated record
Ha K. Cheung
Also filed as: CHEUNG HA · CHEUNG HA K
3 granted patents·12 citations·filing 1989–1994
63Inventor score
Technology areasC09K
Top patents by PatentIndex Score
3 records- 0142US5112524AUnactivated yttrium tantalate phosphorGTE PROD CORP·Filed 1991·Granted May 12, 1992·7 cites·6 claims
- 0231US4935161AProcess for YTaO4 :Nb phosphor preparation using reduced amount of fluxGTE PROD CORP·Filed 1989·Granted Jun 19, 1990·3 cites·3 claims
- 0329US5380463AMethod of making niobium-activated yttrium tantalate x-ray phosphorOSRAM SYLVANIA INC·Filed 1994·Granted Jan 10, 1995·2 cites·10 claims
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