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Helmut Diery
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Frankfurt, DE
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last 30 patents
Information
Patent Grant
Bisamides, a process for their preparation and their use
Patent number
4,536,339
Issue date
Aug 20, 1985
Hoechst Aktiengesellschaft
Werner Ritschel
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Quaternary crosslinked products of xylylene dichlorides and trietha...
Patent number
4,500,735
Issue date
Feb 19, 1985
Hoechst Aktiengesellschaft
Helmut Diery
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bisimidazolines
Patent number
4,482,724
Issue date
Nov 13, 1984
Hoechst Aktiengesellschaft
Werner Ritschel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Cationic ethylene oxide/propylene oxide and ethylene oxide/butylene...
Patent number
4,451,671
Issue date
May 29, 1984
Hoechst Aktiengesellschaft
Helmut Diery
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyether dispersants
Patent number
4,450,304
Issue date
May 22, 1984
Hoechst Aktiengesellschaft
Helmut Diery
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Addition products from triethanolamine condensation products and bi...
Patent number
4,448,992
Issue date
May 15, 1984
Hoechst Aktiengesellschaft
Helmut Diery
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bisesters of alkenylsuccinic acids and ethylene oxide/propylene oxi...
Patent number
4,440,902
Issue date
Apr 3, 1984
Hoechst Aktiengesellschaft
Helmut Diery
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Polymeric ethylene oxide/propylene oxide or ethylene oxide/butylene...
Patent number
4,436,933
Issue date
Mar 13, 1984
Hoechst Aktiengesellschaft
Helmut Diery
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Oxyalkylated addition products from ethylene oxide-propylene oxide...
Patent number
4,420,413
Issue date
Dec 13, 1983
Hoechst Aktiengesellschaft
Helmut Diery
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Addition products from ethylene oxide-propylene oxide block polymer...
Patent number
4,419,265
Issue date
Dec 6, 1983
Hoechst Aktiengesellschaft
Helmut Diery
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyether polyamines, the salts thereof, process for their manufact...
Patent number
4,341,716
Issue date
Jul 27, 1982
Hoechst Aktiengesellschaft
Helmut Diery
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Guanidinium compounds and their use as microbiocidal agents
Patent number
4,339,459
Issue date
Jul 13, 1982
Hoechst Aktiengesellschaft
Helmut Diery
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Water miscible corrosion inhibitors
Patent number
4,297,236
Issue date
Oct 27, 1981
Hoechst Aktiengesellschaft
Helmut Diery
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Dispersing and stabilizing agents for dyestuffs
Patent number
RE30650
Issue date
Jun 16, 1981
Hoechst Aktiengesellschaft
Reinhold Deubel
008 - Bleaching and dyeing
Information
Patent Grant
Process for manufacturing .alpha.-chloroarylacetic acids
Patent number
4,227,016
Issue date
Oct 7, 1980
Hoechst France
Emmanuel Herman
C07 - ORGANIC CHEMISTRY