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Helge Lindstrom
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Hamari, FI
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Patents Grants
last 30 patents
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Patent Grant
Multi-layer pressure pipe of a plastic material
Patent number
6,787,207
Issue date
Sep 7, 2004
Borealis Technology Oy
Helge Lindstrom
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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-...
Patents Applications
last 30 patents
Information
Patent Application
Multi-layer pressure pipe of a plastic material
Publication number
20020094400
Publication date
Jul 18, 2002
Helge Lindstrom
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL