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For the Inventor, By the Inventor

Toijala, Finland

Kautar Oy


USPTO Granted Patents = 3

% Expired Patents = 33.3


Forward Citations = 20

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1 inventor (with patents filed for the assignee):

goldMedal Pentti Virtanen (3 out of 12 patents)

silverMedal Pentti Virtanen (8 patents)


3 patents:

1. 7575630 - Binder admixture, kaolin product and their manufacture (2009-08-18),
2. 4999959 - Prestressed construction element of composite structure and method for (1991-03-19),
3. 4968349 - Method for producing hardened cement mineral material, especially (1990-11-06),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#3 in Toijala

#793 in Finland

Toijala, FI
Toijala, Finland

Kautar Oy

Forward Citations = 20

1 inventor:

goldMedal Pentti Virtanen (3 out of 12 patents)

silverMedal Pentti Virtanen (8 patents)

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