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Per-Erik Hellberg
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Svenshogen, SE
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Patents Grants
last 30 patents
Information
Patent Grant
Polyester polyamine and polyester polyquaternary ammonium corrosion...
Patent number
9,228,089
Issue date
Jan 5, 2016
Akzo Nobel Chemicals International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Use of polyester polyamine and polyester polyquaternary ammonium co...
Patent number
8,940,227
Issue date
Jan 27, 2015
Akzo Nobel Chemical International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Polymeric corrosion inhibitors
Patent number
8,372,336
Issue date
Feb 12, 2013
Akzo Nobel Chemicals International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Environmentally friendly water/oil emulsions
Patent number
8,039,518
Issue date
Oct 18, 2011
Akzo Nobel, N.V.
Per-Erik Hellberg
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Nitrogen-containing ortho ester-based surfactant, its preparation a...
Patent number
7,288,510
Issue date
Oct 30, 2007
Akzo Nobel N.V.
Per-Erik Hellberg
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Ortho ester-based surfactant, its preparation and use
Patent number
7,002,045
Issue date
Feb 21, 2006
Akso Nobel N.V.
Karin Bergstrom
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Orthoester-based polymer as well as preparation and use thereof
Patent number
6,653,395
Issue date
Nov 25, 2003
Akzo Nobel N.V.
Karin Bergstrom
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Surfactant, process for its production and use
Patent number
5,523,470
Issue date
Jun 4, 1996
Berol Nobel AB
Leif Karlsson
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
POLYESTER POLYAMINE AND POLYESTER POLYQUATERNARY AMMONIUM CORROSION...
Publication number
20130274492
Publication date
Oct 17, 2013
Akzo Nobel Chemicals International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Use of polyester polyamine and polyester polyquaternary ammonium co...
Publication number
20130156638
Publication date
Jun 20, 2013
Akzo Nobel Chemicals International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Polymeric corrosion inhibitors
Publication number
20120114523
Publication date
May 10, 2012
Akzo Nobel Chemicals International B.V.
Per-Erik Hellberg
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
ENVIRONMENTALLY-FRIENDLY OIL/WATER DEMULSIFIERS
Publication number
20090209666
Publication date
Aug 20, 2009
Akzo Nobel N.V.
Per-Erik Hellberg
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Nitrogen-containing ortho ester-based surfactant, its preparation a...
Publication number
20040198631
Publication date
Oct 7, 2004
Per-Erik Hellberg
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Ortho ester-based surfactant, its preparation and use
Publication number
20040039235
Publication date
Feb 26, 2004
Karin Bergstrom
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...