Inventor · disambiguated record
Helena Chang
Also filed as: CHANG HELENA · CHANG HELENA C
2 granted patents·51 citations·filing 1991–2001
64Inventor score
Top patents by PatentIndex Score
2 records- 0179US5190927AHigh-glyceryl, low-acetyl gellan gum for non-brittle gelsMERCK & CO INC·Filed 1991·Granted Mar 2, 1993·40 cites·4 claims
- 0262US6573221B2Non-pyruvylated xanthan in oil field applications utilizing high density calcium-based brinesCP KELCO US INC·Filed 2001·Granted Jun 3, 2003·11 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →