For the Inventor, By the Inventor

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Helsinki, Finland

Termorak Oy

USPTO Granted Patents = 1

EPO Patents = 2

Forward Citations = 1

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2 inventors (with patents filed for the assignee):

Bertil Pettersson (1 out of 4 patents)

Borje Thorsstrom (1 out of 1 patent)

Seppo Pitkänen (0 patent)

4. Seppo Kalevi Pitkänen (0 patent)

1 patent: Sort by Forward Citations

1. 4624634 - Method and arrangement for improving the heat economy in rotary kilns (1986-11-25),

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USPTO Data Jan 1 1976 - Jan 13 2026

1 Patents

#321 in Helsinki

#1,466 in Finland

Helsinki, Finland

Termorak Oy

Forward Citations = 1

2 inventors:

Bertil Pettersson (1 out of 4 patents)

Borje Thorsstrom (1 out of 1 patent)

Seppo Pitkänen (0 patent)

4. Seppo Kalevi Pitkänen (0 patent)

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