Werner Pieper

Person

Erftstadt, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus for fumigating waste waters
- Patent number 5,213,717
- Issue date May 25, 1993
- Hoechst Aktiengesellschaft
- Wilhelm P. Doppelfeld
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for reprocessing sulfuric acid from phosphorous purification
- Patent number 5,122,359
- Issue date Jun 16, 1992
- Hoechst Aktiengesellschaft
- Werner Pieper
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for making phosphonic acid dichlorides
- Patent number 4,735,748
- Issue date Apr 5, 1988
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Carboxytetralinephosphonic acids and process for making them
- Patent number 4,692,281
- Issue date Sep 8, 1987
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Phenyltetraline-diphosphonic acids and process for making them
- Patent number 4,692,282
- Issue date Sep 8, 1987
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making chloroisocyanuric acids
- Patent number 4,645,835
- Issue date Feb 24, 1987
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making cyanuric acid
- Patent number 4,587,334
- Issue date May 6, 1986
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making derivatives of vinylphosphonic acid or vinylpyro...
- Patent number 4,529,559
- Issue date Jul 16, 1985
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for separating gallium and indium from aqueous solutions
- Patent number 4,525,333
- Issue date Jun 25, 1985
- Hoechst Aktiengesellschaft
- Gunther Schimmel
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for making derivatives of vinylphosphonic acid or vinylpyro...
- Patent number 4,507,249
- Issue date Mar 26, 1985
- Hoechst Aktiengesellschaft
- Werner Pieper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making vinylphosphonic acid or vinylpyrophosphonic acid
- Patent number 4,486,357
- Issue date Dec 4, 1984
- Hoechst Aktiengesellschaft
- Werner Krause
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making phosphonic anhydrides
- Patent number 4,473,509
- Issue date Sep 25, 1984
- Hoechst Aktiengesellschaft
- Jurgen Grosse
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making 1-hydroxy-alkane-1-phosphonic acids
- Patent number 4,468,355
- Issue date Aug 28, 1984
- Hoechst Aktiengesellschaft
- Werner Krause
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making phosphonic acid ester chlorides
- Patent number 4,427,603
- Issue date Jan 24, 1984
- Hoechst Aktiengesellschaft
- Jurgen Grosse
- C07 - ORGANIC CHEMISTRY

Werner Pieper

Person

Patents Grantslast 30 patents

Apparatus for fumigating waste waters

Process for reprocessing sulfuric acid from phosphorous purification

Process for making phosphonic acid dichlorides

Carboxytetralinephosphonic acids and process for making them

Phenyltetraline-diphosphonic acids and process for making them

Process for making chloroisocyanuric acids

Process for making cyanuric acid

Process for making derivatives of vinylphosphonic acid or vinylpyro...

Process for separating gallium and indium from aqueous solutions

Process for making derivatives of vinylphosphonic acid or vinylpyro...

Process for making vinylphosphonic acid or vinylpyrophosphonic acid

Process for making phosphonic anhydrides

Process for making 1-hydroxy-alkane-1-phosphonic acids

Process for making phosphonic acid ester chlorides