Inventor · disambiguated record
Yuehsiung Chang
Also filed as: CHANG YUEHSIUNG
6 granted patents·78 citations·filing 1984–1988
83Inventor score
Top patents by PatentIndex Score
6 records- 0168US4865754ALubricant overbased phenate detergent with improved water toleranceAMOCO CORP·Filed 1987·Granted Sep 12, 1989·22 cites·18 claims
- 0268US4519881ARegeneration of alkaline treating agentsSTANDARD OIL CO INDIANA·Filed 1984·Granted May 28, 1985·17 cites·5 claims
- 0353US4680098AAqueous recovery of cobalt or cobalt and manganese from solution also containing oxygenated aromatic compoundsAMOCO CORP·Filed 1986·Granted Jul 14, 1987·18 cites·22 claims
- 0446US4664824APhenate product and processAMOCO CORP·Filed 1986·Granted May 12, 1987·9 cites·29 claims
- 0545US4608184APhenate process and composition improvementAMOCO CORP·Filed 1985·Granted Aug 26, 1986·9 cites·15 claims
- 0636US4873007AMethod for producing sulfurized alkylphenolsAMOCO CORP·Filed 1988·Granted Oct 10, 1989·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →