TK

Toivo Karna

Google: 11 patents #2,292 of 22,993Top 10%
Overall (All Time): #427,142 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
6509502 Method and apparatus for preparing polyaniline Matti T. Jussila, Jukka Koskinen, Ilkka Turunen, Samuli Puhakka 2003-01-21
5928565 Conducting polymer material and method for its production Jukka Laakso, Kalle Levon, Esko Savolainen 1999-07-27
5585040 Conductive plastics material and a method for its preparation Pauli Kirmanen, Esko Savolainen, Esa Virtanen, Jukka Laakso, Heikki Ruohonen +3 more 1996-12-17
5531932 Metal compound/protonic acid containing electrically conductive compositions and methods for their preparation Jukka Laakso, Timo Niemi, Heikki Ruohonen, Esko Savolainen, Helge Lindstrom +2 more 1996-07-02
5346649 Conducting polymer material and method for its production Jukka Laakso, Kalle Levon, Esko Savolainen 1994-09-13
5340499 Electrically conductive compositions and methods for their preparation Jukka Laakso, Timo Niemi, Heikki Ruohonen, Esko Savolainen, Helge Lindstrom +3 more 1994-08-23
5279769 Method for preparing a conductive polymer Timo Kokkonen, Jukka Laakso, Per Nyholm, Jan-Erik sterholm, Henrik Stubb 1994-01-18
5037671 Procedure and means for manufacturing storage battery plates Frey Fredenberg, Timo Niemi, Matti Luukka, Jukka-Pekka Nieminen 1991-08-06
5012175 Means for acid-filling and forming Kalevi Lind 1991-04-30
4973533 Gas vault structure for a storage battery Jukka-Pekka Nieminen, Asko Maisti, Ahti Kemppi, Esko Savolainen, Niilo Jaasko 1990-11-27
4966346 Mounting fixture for storage battery Jukka-Pekka Nieminen, Asko Maisti, Hannu Kahonen 1990-10-30
4608944 Ignition device for fluidized bed boiler 1986-09-02