Inventor · disambiguated record

I. Ching Chiu

Also filed as: CHIU I-CHING

2 granted patents·29 citations·filing 1988–1993

59Inventor score

Technology areasC07C C10M

Files withPENNZOIL PROD CO2

Top patents by PatentIndex Score

2 records

0176US4863622APhosphorus-free antiwear/antifriction additivesPENNZOIL PROD CO·Filed 1988·Granted Sep 5, 1989·26 cites·20 claims
0245US5319144AProcess for productin of 4,4'-thiobis phenolsPENNZOIL PROD CO·Filed 1993·Granted Jun 7, 1994·3 cites·8 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →