Inventor · disambiguated record
Erkki Niiranen
Also filed as: NIIRANEN ERKKI · NIIRANEN ERKKI O
13 granted patents·1 pending application·302 citations·filing 1989–2015
92Inventor score
Top patents by PatentIndex Score
14 records- 0188US6570472B1Low-pass filterFILTRONIC LK OY·Filed 2000·Granted May 27, 2003·29 cites·10 claims
- 0288US5717368AVaractor tuned helical resonator for use with duplex filterLK PRODUCTS OY·Filed 1996·Granted Feb 10, 1998·60 cites·11 claims
- 0388US5594395ADiode tuned resonator filterLK PRODUCTS OY·Filed 1994·Granted Jan 14, 1997·44 cites·14 claims
- 0488US5351023AHelix resonatorLK PRODUCTS OY·Filed 1993·Granted Sep 27, 1994·50 cites·14 claims
- 0587US4977383AResonator structureLK PRODUCTS OY·Filed 1989·Granted Dec 11, 1990·44 cites·10 claims
- 0685US5689221ARadio frequency filter comprising helix resonatorsLK PRODUCTS OY·Filed 1995·Granted Nov 18, 1997·46 cites·8 claims
- 0780US7821354B2Directional couplerPOWERWAVE COMTEK OY·Filed 2007·Granted Oct 26, 2010·9 cites·13 claims
- 0865US7466970B2Arrangement for dividing a filter output signalFILTRONIC COMTEK OY·Filed 2005·Granted Dec 16, 2008·4 cites·14 claims
- 0962US7526263B2Input arrangement for a low-noise amplifier pairFILTRONIC COMTEK OY·Filed 2006·Granted Apr 28, 2009·3 cites·10 claims
- 1062US6566985B2High-pass filterFILTRONIC LK OY·Filed 2001·Granted May 20, 2003·7 cites·13 claims
- 1159US6566984B2Resonator filter with reduced variation in the pass band attenuationFILTRONIC LK OY·Filed 2001·Granted May 20, 2003·6 cites·11 claims
- 1235US10056666B2Tuning element for radio frequency resonatorTONGYU TECH OY·Filed 2015·Granted Aug 21, 2018·0 cites·8 claims
- 1332US8125296B2Radio device antenna filter arrangementNIIRANEN ERKKI·Filed 2005·Granted Feb 28, 2012·0 cites·10 claims
- 1426US2017084972A1Rf filterTONGYU TECH OY·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →