Inventor · disambiguated record
Andrew J. D. Ritchie
Also filed as: RITCHIE ANDREW J · RITCHIE ANDREW J D
6 granted patents·8 pending applications·210 citations·filing 1996–2024
87Inventor score
Top patents by PatentIndex Score
14 records- 0193US11034912B2Lubricating oil compositionsINFINEUM INT LTD·Filed 2014·Granted Jun 15, 2021·23 cites·6 claims
- 0289US6869919B2Lubricating oil compositionsINFINEUM INT LTD·Filed 2002·Granted Mar 22, 2005·34 cites·34 claims
- 0389US6715473B2EGR equipped diesel engines and lubricating oil compositionsINFINEUM INT LTD·Filed 2002·Granted Apr 6, 2004·40 cites·40 claims
- 0486US5994277ALubricating compositions with improved antioxidancy comprising added copper, a molybdenum containing compound, aromatic amine and ZDDPEXXON CHEMICAL PATENTS INC·Filed 1996·Granted Nov 30, 1999·48 cites·16 claims
- 0584US7018958B2Lubricating oil compositionsINFINEUM INT LTD·Filed 2002·Granted Mar 28, 2006·32 cites·10 claims
- 0675US6310010B1High molecular weight dispersant compositions and their preparationEXXON CHEMICAL PATENTS INC·Filed 1999·Granted Oct 30, 2001·33 cites·25 claims
- 0762US2025197755A1Lubricant Compositions Containing Molybdenum For Reduced Pre-ignition In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 0861US2025197764A1Lubricant Compositions Containing Detergent For Reduced Pre-ignition In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 0961US2025197762A1Lubricant Compositions For Reduced Pre-ignition In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 1056US2025197761A1Lubricant Compositions Containing Magnesium Detergent For Reduced Pre-ignition In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 1156US2025197763A1Lubricant Compositions Containing Silicon For Reduced Pre-ignition In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 1253US2025197765A1Lubricant Compositions Containing Phosphorus For Use In Hydrogen Fueled EnginesINFINEUM INT LTD·Filed 2024·Application pending·0 cites
- 1347US2005119138A1Lubricating oil compositionsFiled 2004·Application pending·0 cites
- 1442US2005124509A1Lubricating oil compositionsFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →