Inventor · disambiguated record
John M. Sewell
Also filed as: SEWELL JOHN M
8 granted patents·974 citations·filing 1989–2012
90Inventor score
Top patents by PatentIndex Score
8 records- 0190US6491647B1Physiological sensing deviceACTIVE SIGNAL TECHNOLOGIES INC·Filed 1999·Granted Dec 10, 2002·694 cites·93 claims
- 0284US8265291B2High sensitivity noise immune stethoscopeBRIDGER KEITH·Filed 2006·Granted Sep 11, 2012·53 cites·30 claims
- 0381US9078571B2High sensitivity noise immune stethoscopeBRIDGER KEITH·Filed 2012·Granted Jul 14, 2015·18 cites·18 claims
- 0481US6751954B2Compact hybrid actuatorFiled 2002·Granted Jun 22, 2004·23 cites·15 claims
- 0569US6887199B2Brain assessment monitorACTIVE SIGNAL TECHNOLOGIES INC·Filed 2002·Granted May 3, 2005·58 cites·43 claims
- 0661US5919144AApparatus and method for measurement of intracranial pressure with lower frequencies of acoustic signalACTIVE SIGNAL TECHNOLOGIES INC·Filed 1997·Granted Jul 6, 1999·113 cites·24 claims
- 0730US5394376AMethod and apparatus for acoustic attenuationMARTIN MARIETTA CORP·Filed 1993·Granted Feb 28, 1995·10 cites·2 claims
- 0829US4907209ALow frequency sound transducerMARTIN MARIETTA CORP·Filed 1989·Granted Mar 6, 1990·5 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →