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Patents Grants
last 30 patents
Information
Patent Grant
Process for preparing high-purity, halogen-free o-phthaladehyde
Patent number
7,858,381
Issue date
Dec 28, 2010
DSM Fine Chemicals Austria Nfg GmbH & Co KG
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of ketones obtained from the correspon...
Patent number
6,545,186
Issue date
Apr 8, 2003
DSM Fine Chemicals Austria Nfg GmbH & Co., KG
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification and formulation of o-phthalaldehyde
Patent number
6,486,358
Issue date
Nov 26, 2002
DSM Fine Chemicals Austria Nfg GmbH & Co KG
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing hydroxymethylpyridines
Patent number
6,486,327
Issue date
Nov 26, 2002
DSM Fine Chemicals Austria Nfg GmbH & Co KG
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of o-phthalaldehyde
Patent number
5,874,637
Issue date
Feb 23, 1999
DSM Chemie Linz GmbH
Karl Heinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Process for preparing high-purity, halogen-free o-phthaladehyde
Publication number
20060293542
Publication date
Dec 28, 2006
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESS FOR THE PURIFICATION AND FORMULATION OF O-PHTHALALDEHYDE
Publication number
20020173678
Publication date
Nov 21, 2002
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for the purification of ketones obtained from the correspon...
Publication number
20020077510
Publication date
Jun 20, 2002
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for preparing alkyl- or aryloxyacetaldehydes
Publication number
20010053852
Publication date
Dec 20, 2001
Karlheinz Giselbrecht
C07 - ORGANIC CHEMISTRY