Inventor · disambiguated record
John Pfeifer
Also filed as: PFEIFER JOHN · PFEIFER JOHN E · PFEIFER JOHN EDWARD
14 granted patents·3 pending applications·486 citations·filing 1976–2023
93Inventor score
Top patents by PatentIndex Score
17 records- 0195US6087815APortable power system using DC to DC converterFISKARS INC·Filed 1997·Granted Jul 11, 2000·231 cites·11 claims
- 0293US5929597APortable electrical power system to supply direct current voltageFISKARS INC·Filed 1997·Granted Jul 27, 1999·115 cites·4 claims
- 0386US9950241B2Snow ski assembliesPFEIFER JOHN·Filed 2014·Granted Apr 24, 2018·9 cites·16 claims
- 0478USD882009SSnow skiPFEIFER JOHN·Filed 2017·Granted Apr 21, 2020·3 cites·1 claims
- 0576US6768549B1Ampoule analyzer apparatusFiled 2000·Granted Jul 27, 2004·16 cites·7 claims
- 0674US11786799B2Snow ski assembliesPFEIFER JOHN·Filed 2021·Granted Oct 17, 2023·1 cites·26 claims
- 0774US4091371ATouch-responsive portable intrusion alarmSIMCO INC·Filed 1976·Granted May 23, 1978·24 cites·5 claims
- 0871US5398019APortable sensor for detecting bends of the back of a person past a predetermined lumbosacral angleBARNETT LARRY W·Filed 1993·Granted Mar 14, 1995·37 cites·1 claims
- 0969US6762842B2Light analyzer apparatusMICROCENSUS LLC·Filed 2002·Granted Jul 13, 2004·9 cites·8 claims
- 1067US6493085B1Light analyzer apparatusMICROCENSUS LLC·Filed 2000·Granted Dec 10, 2002·8 cites·19 claims
- 1166US11007421B2Snow ski assembliesPFEIFER JOHN·Filed 2018·Granted May 18, 2021·1 cites·19 claims
- 1265US2024115924A1Snow ski assembliesJ&M SPORTS ENTPR LLC·Filed 2023·Application pending·0 cites
- 1362USD994812SSnow skiPFEIFER JOHN·Filed 2020·Granted Aug 8, 2023·0 cites·1 claims
- 1461US6444462B1Incubation system for an analyzer apparatusMICROCENSUS LLC·Filed 2000·Granted Sep 3, 2002·8 cites·19 claims
- 1553US5716128APower takeoff and lighting unit for fluorescent fixtureMARKSON ROSENTHAL & CO·Filed 1996·Granted Feb 10, 1998·24 cites·21 claims
- 1643US2005241983A1Monitored medication packageSNYDER WILLIAM B·Filed 2005·Application pending·0 cites
- 1742US2008111517A1Charge Controller for DC-DC Power ConversionPFEIFER JOHN E·Filed 2006·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when John Pfeifer 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 →