Inventor · disambiguated record
John R. Marshall
Also filed as: MARSHALL III JOHN · MARSHALL JOHN · MARSHALL JOHN R · MARSHALL JOHN REUBEN
17 granted patents·6 pending applications·734 citations·filing 1973–2023
95Inventor score
Files withBIOJECT INC4ELECTROPORE INC4INOVIO PHARMACEUTICALS INC2PROTOCOL SYS INC2WILLIAMSON DANIEL E2
Top patents by PatentIndex Score
23 records- 0196US4923814AHigh speed, high power apparatus for vesicle prealignment, poration, loading and fusion in uniform electric fields and method thereforELECTROPORE INC·Filed 1989·Granted May 8, 1990·109 cites·26 claims
- 0292US4946793AImpedance matching for instrumentation which electrically alters vesicle membranesELECTROPORE INC·Filed 1988·Granted Aug 7, 1990·194 cites·15 claims
- 0389US6676630B2Needle-free injection systemBIOJECT MEDICAL TECHNOLOGIES I·Filed 2002·Granted Jan 13, 2004·193 cites·19 claims
- 0485US4906576AHigh speed, high power apparatus for vesicle prealignment, poration, loading and fusion in uniform electric fields and method thereforELECTROPORE INC·Filed 1987·Granted Mar 6, 1990·57 cites·18 claims
- 0578US5298137AMethod and apparatus for linear magnetron sputteringSURFACE SOLUTIONS INC·Filed 1992·Granted Mar 29, 1994·37 cites·47 claims
- 0678US2023329973A1Intradermal injection deviceINOVIO PHARMACEUTICALS INC·Filed 2023·Application pending·0 cites
- 0768US11723840B2Intradermal injection deviceINOVIO PHARMACEUTICALS INC·Filed 2019·Granted Aug 15, 2023·0 cites·12 claims
- 0868US10045911B2Intradermal injection deviceWILLIAMSON DANIEL E·Filed 2010·Granted Aug 14, 2018·3 cites·15 claims
- 0966US4849089ADisposable electromanipulation chamberELECTROPORE INC·Filed 1989·Granted Jul 18, 1989·27 cites·24 claims
- 1064US4185664ALow noise fluid pressure reducerDRESSER IND·Filed 1978·Granted Jan 29, 1980·19 cites·10 claims
- 1159US2019008724A1Intradermal injection deviceGENETRONICS INC·Filed 2018·Application pending·0 cites
- 1256US6935384B2Needle-free injection systemBIOJECT INC·Filed 2003·Granted Aug 30, 2005·13 cites·27 claims
- 1352US2009137949A1Needle-free injection device with nozzle auto-disableBIOJECT INC·Filed 2007·Application pending·0 cites
- 1451US3930475AEngine exhaust gas recirculating controlFORD MOTOR CO·Filed 1973·Granted Jan 6, 1976·10 cites·10 claims
- 1549US7238167B2Needle-free injection systemBIOJECT INC·Filed 2004·Granted Jul 3, 2007·1 cites·20 claims
- 1649US5351694ANoninvasive-blood-pressure (NIBP) monitoring apparatus with noninflatable, pressure-information-providing (PIP) structurePROTOCOL SYS INC·Filed 1992·Granted Oct 4, 1994·44 cites·12 claims
- 1748US2009137948A1Needle-free injection device with auto-disableBIOJECT INC·Filed 2007·Application pending·0 cites
- 1845US2004185952A1Game ball monitoring method and apparatusFiled 2003·Application pending·0 cites
- 1941US10697614B2LampMARSHALL JOHN REUBEN·Filed 2017·Granted Jun 30, 2020·0 cites·20 claims
- 2037US2011315269A1High workload injection systemWILLIAMSON DANIEL E·Filed 2010·Application pending·0 cites
- 2135US5692513ANoninvasive-blood-pressure(NIBP) monitoring apparatus with noninflatable, pressure-information-providing (PIP) structurePROTOCOL SYS INC·Filed 1994·Granted Dec 2, 1997·16 cites·29 claims
- 2235US4824241AAtomic spectroscopyPHILIPS CORP·Filed 1987·Granted Apr 25, 1989·5 cites·8 claims
- 2332US6024658AGame ball monitoring method and apparatusFiled 1995·Granted Feb 15, 2000·6 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when John R. Marshall files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →