PV

Pentti Virtanen

FO Fp-Pigments Oy: 6 patents #1 of 17Top 6%
AT Alstom Technology: 1 patents #683 of 1,544Top 45%
📍 Toijala, FI: #1 of 28 inventorsTop 4%
Overall (All Time): #224,460 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
8906201 Use of acidic water in the manufacture of paper Sakari Saastamoinen 2014-12-09
8758566 Process for manufacturing paper or board Sakari Saastamoinen 2014-06-24
8480018 Method and apparatus for the preparation of finely divided calcium hydroxide 2013-07-09
8474738 Impact mill 2013-07-02
8354003 Reinforced porous fibre product 2013-01-15
8192542 Aqueous suspension based on hydraulic binder and a process for the production thereof 2012-06-05
7575630 Binder admixture, kaolin product and their manufacture 2009-08-18
7198841 Paper having a cellulosic fiber layer treated with elementary particles Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Gronroos, Veli Käsmä +1 more 2007-04-03
6981308 Support members inside stator slots of a rotating electric machine and method of mounting these support members Olof Lundeberg 2006-01-03
6787196 Apparatus for making a web of paper or board containing calcium carbonate Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Gronroos, Veli Käsmä +1 more 2004-09-07
6761869 Process for preparing precipitated calcium carbonate 2004-07-13
6699318 Process for preparing and modifying synthetic calcium carbonate 2004-03-02
6680086 Method for making paper, assembly for implementing the method and paper product produced by the method Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Gronroos, Veli Käsmä +1 more 2004-01-20
6602484 Precipitated calcium carbonate and method for the production thereof 2003-08-05
6475459 Process for preparing calcium carbonate particles 2002-11-05
6416727 Apparatus and process for the preparation of precipitated calcium carbonate 2002-07-09
6143064 Pigment particles coated with precipitated calcium carbonate and a process for the preparation thereof 2000-11-07
4999959 Prestressed construction element of composite structure and method for element fabrication 1991-03-19
4968349 Method for producing hardened cement mineral material, especially concrete, and an apparatus for implementation of the method 1990-11-06
4540358 Apparatus for the manufacture of a precast building element of concrete 1985-09-10