For the Inventor, By the Inventor

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Vtt

USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 10

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6 inventors (with patents filed for the assignee):

Jukka Lekkala (2 out of 5 patents)

Kari Kirjavainen (2 out of 44 patents)

Seppo Uosukainen (2 out of 2 patents)

4. Vesa Välimäki (1 out of 4 patents)

5. Hannu Nykänen (1 out of 1 patent)

6. Hannu Nykanen (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6847722 - Method and equipment for attenuating sound in a duct (2005-01-25),

2. 6178820 - Sensor for measuring acceleration and sound pressure (2001-01-30),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#169 in Espoo

#1,003 in Finland

Vtt

Forward Citations = 10

6 inventors:

Jukka Lekkala (2 out of 5 patents)

Kari Kirjavainen (2 out of 44 patents)

Seppo Uosukainen (2 out of 2 patents)

4. Vesa Välimäki (1 out of 4 patents)

5. Hannu Nykänen (1 out of 1 patent)

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