Inventor

NIIRANEN ERKKI

FI11 patents

⚠️ This page may combine multiple inventors who share the name “NIIRANEN ERKKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LK PRODUCTS OY

3 patents

US5717368AFeb 10, 1998

Varactor tuned helical resonator for use with duplex filter

LK PRODUCTS OY60 citations94

US5594395AJan 14, 1997

Diode tuned resonator filter

LK PRODUCTS OY44 citations91

US5689221ANov 18, 1997

Radio frequency filter comprising helix resonators

LK PRODUCTS OY46 citations90

FILTRONIC LK OY

3 patents

US6570472B1May 27, 2003

Low-pass filter

FILTRONIC LK OY29 citations91

US6566985B2May 20, 2003

High-pass filter

FILTRONIC LK OY7 citations69

US6566984B2May 20, 2003

Resonator filter with reduced variation in the pass band attenuation

FILTRONIC LK OY6 citations58

FILTRONIC COMTEK OY

2 patents

US7526263B2Apr 28, 2009

Input arrangement for a low-noise amplifier pair

FILTRONIC COMTEK OY3 citations55

US7466970B2Dec 16, 2008

Arrangement for dividing a filter output signal

FILTRONIC COMTEK OY4 citations55

POWERWAVE COMTEK OY

1 patent

US7821354B2Oct 26, 2010

Directional coupler

POWERWAVE COMTEK OY9 citations81

TONGYU TECH OY

1 patent

US10056666B2Aug 21, 2018

Tuning element for radio frequency resonator

TONGYU TECH OY0 citations34

NIIRANEN ERKKI

1 patent

US8125296B2Feb 28, 2012

Radio device antenna filter arrangement

NIIRANEN ERKKI0 citations33