Inventor · disambiguated record
John A. Mcdougal
Also filed as: MCDOUGAL JOHN A
20 granted patents·519 citations·filing 1977–1992
96Inventor score
Files withMCDOUGAL JOHN A19
Top patents by PatentIndex Score
20 records- 0198US4514712AIgnition coilMCDOUGAL JOHN A·Filed 1978·Granted Apr 30, 1985·119 cites·33 claims
- 0286US4704943AImpact structuresMCDOUGAL JOHN A·Filed 1985·Granted Nov 10, 1987·62 cites·7 claims
- 0384US4257373AInternal combustion engine ignition systemMCDOUGAL JOHN A·Filed 1978·Granted Mar 24, 1981·18 cites·35 claims
- 0482US4116173AInternal combustion engine ignition systemMCDOUGAL JOHN A·Filed 1977·Granted Sep 26, 1978·29 cites·35 claims
- 0580US5133322AInternal combustion engine ignition system and cleaning deviceMCDOUGAL JOHN A·Filed 1991·Granted Jul 28, 1992·24 cites·3 claims
- 0678US4821697AFuel octane evaluation systemMCDOUGAL JOHN A·Filed 1987·Granted Apr 18, 1989·27 cites·31 claims
- 0777US4517540ASpiral windingsMCDOUGAL JOHN A·Filed 1980·Granted May 14, 1985·39 cites·19 claims
- 0875US4809662AInternal combustion engine ignition systemMCDOUGAL JOHN A·Filed 1988·Granted Mar 7, 1989·16 cites·27 claims
- 0975US4266421AVibration sensors for internal combustion enginesMCDOUGAL JOHN A·Filed 1979·Granted May 12, 1981·21 cites·24 claims
- 1073US5210458ASpark plugMCDOUGAL JOHN A·Filed 1991·Granted May 11, 1993·33 cites·39 claims
- 1170US4869175AImpact structuresMCDOUGAL JOHN A·Filed 1987·Granted Sep 26, 1989·23 cites·18 claims
- 1266US4471737AInternal combustion engine ignition systemMCDOUGAL JOHN A·Filed 1982·Granted Sep 18, 1984·18 cites·4 claims
- 1364US4947680ASeparation of variables in an ion gap controlled engineMCDOUGAL JOHN A·Filed 1989·Granted Aug 14, 1990·20 cites·27 claims
- 1459US5514314ASpark plug and methodFiled 1992·Granted May 7, 1996·18 cites·15 claims
- 1557US5085192AInternal combustion engine ignition system and cleaning deviceMCDOUGAL JOHN A·Filed 1991·Granted Feb 4, 1992·10 cites·6 claims
- 1650US4718381AInternal combustion engine ignition systemMCDOUGAL JOHN A·Filed 1986·Granted Jan 12, 1988·7 cites·4 claims
- 1748US4960093AInternal combustion engine ignition system and cleaning deviceMCDOUGAL JOHN A·Filed 1989·Granted Oct 2, 1990·6 cites·14 claims
- 1845US4837544ASpiral windingsMCDOUGAL JOHN A·Filed 1988·Granted Jun 6, 1989·12 cites·16 claims
- 1938US5029567AInternal combustion engine ignition system and cleaning deviceMCDOUGAL JOHN A·Filed 1990·Granted Jul 9, 1991·10 cites·8 claims
- 2035US4993371AInternal combustion engine ignition system and cleaning deviceMCDOUGAL JOHN A·Filed 1990·Granted Feb 19, 1991·7 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →