OY HELVAR

Organization

HELSINKI, FI

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for wireless remote control
- Patent number 5,844,516
- Issue date Dec 1, 1998
- Oy Helvar
- Teijo Viljanen
- G08 - SIGNALLING
Information Patent Grant
Suppressor for an electronic ballast in a discharge lamp
- Patent number 5,698,950
- Issue date Dec 16, 1997
- Oy Helvar
- Teijo Viljanen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and circuit system for controlling a lighting electronics ap...
- Patent number 5,691,604
- Issue date Nov 25, 1997
- Oy Helvar
- Teijo Viljanen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Control device for an appliance consuming electric power
- Patent number 5,552,676
- Issue date Sep 3, 1996
- Oy Helvar
- Teijo Viljanen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Control circuit for drive circuit of an electronic ballast for a di...
- Patent number 5,410,220
- Issue date Apr 25, 1995
- Oy Helvar
- Kari von Hertzen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of and apparatus for supplying high frequency alternating cu...
- Patent number 5,034,660
- Issue date Jul 23, 1991
- Oy Helvar
- Martti Sairanen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electronic mains connection device for a gas discharge lamp
- Patent number 4,719,390
- Issue date Jan 12, 1988
- Oy Helvar
- Martti Sairanen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Inverter circuit with a control circuit for leading transistors mor...
- Patent number 4,603,378
- Issue date Jul 29, 1986
- Oy Helvar
- Matti Virta
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electronic ballast for a discharge lamp
- Patent number 4,553,070
- Issue date Nov 12, 1985
- Oy Helvar
- Martti Sairanen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Intensity regulator, especially a light regulator
- Patent number 4,456,855
- Issue date Jun 26, 1984
- Oy Helvar
- Martti Sairanen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Casing hook used to impregnate choke or transformer
- Patent number 4,296,545
- Issue date Oct 27, 1981
- Oy Helvar
- Esko Lampinen
- H01 - BASIC ELECTRIC ELEMENTS

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Trademarklast 30 trademarks

Information Trademark
75442374 - HELVAR
- Serial number 75442374
- Registration number 2289931
- Filing date Mar 2, 1998
- Oy Helvar
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
75416855 - HELVAR
- Serial number 75416855
- Registration number 2359091
- Filing date Jan 12, 1998
- Oy Helvar
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
74610117 - HELVAR
- Serial number 74610117
- Filing date Oct 6, 1994
- Oy Helvar
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73721531 - HELVAR
- Serial number 73721531
- Filing date Apr 11, 1988
- OY HELVAR
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments

Organization

Patents Grantslast 30 patents

Method and apparatus for wireless remote control

Suppressor for an electronic ballast in a discharge lamp

Method and circuit system for controlling a lighting electronics ap...

Control device for an appliance consuming electric power

Control circuit for drive circuit of an electronic ballast for a di...

Method of and apparatus for supplying high frequency alternating cu...

Electronic mains connection device for a gas discharge lamp

Inverter circuit with a control circuit for leading transistors mor...

Electronic ballast for a discharge lamp

Intensity regulator, especially a light regulator

Casing hook used to impregnate choke or transformer

Trademarklast 30 trademarks

75442374 - HELVAR

75416855 - HELVAR

74610117 - HELVAR

73721531 - HELVAR