Inventor · disambiguated record
John Spence Hayes Chapman, Jr.
Also filed as: CHAPMAN JOHN · CHAPMAN JR JOHN SPENCE HAYES
1 granted patent·4 pending applications·61 citations·filing 1991–2011
50Inventor score
Top patents by PatentIndex Score
5 records- 0186US5165374AInlet arrangement for an internal combustion engineROVER GROUP·Filed 1991·Granted Nov 24, 1992·61 cites·15 claims
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- 0432US2011186001A1Modifying an Internal Combustion Engine for Radical Ignition CombustionTOTAL ENERGY RENEWABLE POWER SYSTEM TERPS LLC·Filed 2010·Application pending·0 cites
- 0532US2012103287A1Modifying an Internal Combustion Engine for Radical Ignition CombustionMCCOWAN WILLIAM PAUL·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →