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HELVAR OY

Overview
  • Total Patents
    219
About

HELVAR OY has a total of 219 patent applications. Its first patent ever was published in 1939. It filed its patents most often in Finland, Sweden and EPO (European Patent Office). Its main competitors in its focus markets electrical machinery and energy, machines and environmental technology are ADVANCE TRANSFORMER CO, AUGIER ETS and EIN HASHOFET ELECTRICAL ACCESS.

Patent filings per year

Chart showing HELVAR OYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sairanen Martti 38
#2 Viljanen Teijo 23
#3 Lilja Pertti 22
#4 Virta Matti 21
#5 Kajavo Kari 14
#6 Lehvaeslaiho V 10
#7 Ahonen Erkki 8
#8 Kajavo K 8
#9 Lehvaeslaiho Vaeinoe 8
#10 Naakka Harri 6

Latest patents

Publication Filing date Title
FI990819A0 Foil fuse made on PCB
FI982469A0 Lighting system drive with light sensor
FI981430A0 Method and apparatus for encoding a lighting control device
FI980401A0 Insulating coating penetrating wound connector
FI980259A0 Circuit for controlled recovery of the body diode
EP0848581A1 Cathode filament heating circuit for a low-pressure discharge lamp
FI973782A0 Power frequency converter from AC to AC
FI973783A0 Controlled diode or body diode recovery circuit
FI972597A0 The detection circuit of the lamp direction is provided with an electronic connection device
FI972045A0 Device for automatic connection of an electrical conduit, in particular of an insulated electrical conduit, such as coil rod
FI971362A0 Cathode ray tube Foer en urladdningslampa med laogt tryck
FI970018A0 Electronic connector for discharge lamp equipped with lamp power measurement by means of DC signal
FI970017A0 With the measurement of lamp power, an adjustable electronic connection means is provided
FI965024A0 Electronic ballast with thermal protection circuit
FI964972A0 Cathode filament for a low pressure discharge lamp
FI963614A0 Faestanation Foer faestning av en induktor vid stommen till en belysningsarmatur
FI961659A0 light controller
FI98263B Fluorescent lamp electronic ballast protection circuit
US5844516A Method and apparatus for wireless remote control
FI952974A0 Interference filter for electronic switchgear