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Heikki Ruohonen
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Helsinki, FI
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last 30 patents
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Patent Grant
Conductive plastics material and a method for its preparation
Patent number
5,585,040
Issue date
Dec 17, 1996
Neste Oy
Pauli Kirmanen
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Conductive plastics material and a method for its preparation
Patent number
5,585,038
Issue date
Dec 17, 1996
Neste Oy
Pauli Kirmanen
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Metal compound/protonic acid containing electrically conductive com...
Patent number
5,531,932
Issue date
Jul 2, 1996
Neste Oy
Toivo Karna
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electrically conductive compositions and methods for their preparation
Patent number
5,340,499
Issue date
Aug 23, 1994
Neste Oy
Toivo Karna
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...