Ralf Pfirmann

Person

Grieshiem, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Aminophosphonium compounds
- Patent number 6,645,904
- Issue date Nov 11, 2003
- Clariant GmbH
- Berthold Schiemenz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Aminophosphonium compounds
- Patent number 6,465,643
- Issue date Oct 15, 2002
- Clariant GmbH
- Berthold Schiemenz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Mixtures comprising tetrakis(pyrrolidino/piperdino)phosphonium salts
- Patent number 6,407,029
- Issue date Jun 18, 2002
- Clariant GmbH
- Berthold Schiemenz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of trifluorobenzoic acids
- Patent number 6,362,365
- Issue date Mar 26, 2002
- Clariant GmbH
- Andreas Maier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of isochroman-3-ones
- Patent number 6,348,603
- Issue date Feb 19, 2002
- Clariant GmbH
- Holger Geissler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Two-step production of 3-chloro-4-fluoro-benzoyl chloride by chlori...
- Patent number 6,187,952
- Issue date Feb 13, 2001
- Clariant GmbH
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalyst comprising an amidophosphonium salt for halex reactions
- Patent number 6,103,659
- Issue date Aug 15, 2000
- Aventis Research & Technologies GmbH & Co. KG
- Sergej Pasenok
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing isochroman-3-ones
- Patent number 6,075,152
- Issue date Jun 13, 2000
- Clariant GmbH
- Holger Geissler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing quinazoline derivatives
- Patent number 6,001,831
- Issue date Dec 14, 1999
- Clariant GmbH
- Theodor Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Monoesters of carboxymethylene anthranilic acids and process for pr...
- Patent number 5,973,189
- Issue date Oct 26, 1999
- Clariant GmbH
- Theodor Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 3,5-difluoroaniline
- Patent number 5,965,775
- Issue date Oct 12, 1999
- Clariant GmbH
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing N-carboxymethylene-4-chloro-anthranilic acid...
- Patent number 5,945,556
- Issue date Aug 31, 1999
- Clariant GmbH
- Theodor Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of esters of aromatic carboxylic acid
- Patent number 5,874,608
- Issue date Feb 23, 1999
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Derivatives of 2, 3, 6-trifluorophenols and a process for their pre...
- Patent number 5,849,959
- Issue date Dec 15, 1998
- Clariant GmbH
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of fluorine-containing chemical compounds
- Patent number 5,773,651
- Issue date Jun 30, 1998
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of esters of aromatic carboxylic acids
- Patent number 5,744,628
- Issue date Apr 28, 1998
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of aromatic compounds by decarboxylatio...
- Patent number 5,739,388
- Issue date Apr 14, 1998
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of salts of substituted or unsubstitute...
- Patent number 5,723,658
- Issue date Mar 3, 1998
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cis-4-(2,2,3,3-tetrafluoropropoxy)-cinnamonitrile and trans-4-(2,2,...
- Patent number 5,663,410
- Issue date Sep 2, 1997
- Hoechst Aktiengesellschaft
- Matthias Beller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted 2-chloro-3,4,5-trifluorobenzenes and a process for thei...
- Patent number 5,565,612
- Issue date Oct 15, 1996
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Trifluorophenylene compounds, process for their preparation, and th...
- Patent number 5,525,258
- Issue date Jun 11, 1996
- Hoechst Aktiengesellschaft
- Rainer Wingen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Halogenated cinnamic acids and esters thereof, processes for the pr...
- Patent number 5,516,932
- Issue date May 14, 1996
- Hoechst Aktiengesellschaft
- Matthias Beller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 4-alkoxy-3,5,6-trifluoro-phthalic ac...
- Patent number 5,488,152
- Issue date Jan 30, 1996
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of halogenated benzoic acids
- Patent number 5,481,032
- Issue date Jan 2, 1996
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2,3-difluoro-6-nitrobenzonitrile and 2-chloro-5,6-difluorobenzonitr...
- Patent number 5,478,963
- Issue date Dec 26, 1995
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of chlorinated 4,5-difluorobenzoic acid...
- Patent number 5,473,095
- Issue date Dec 5, 1995
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of substituted 2,3-difluoropyridines
- Patent number 5,468,863
- Issue date Nov 21, 1995
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing fluorobenzonitriles
- Patent number 5,466,859
- Issue date Nov 14, 1995
- Hoechst Aktiengesellschaft
- Thomas Schach
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4-hydroxy-2,3,5-trifluorobenzoic acid and a process for its prepara...
- Patent number 5,446,198
- Issue date Aug 29, 1995
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing alkyl 3-hydroxy-2, 4, 5-trifluorobenzoates an...
- Patent number 5,430,173
- Issue date Jul 4, 1995
- Hoechst Aktiengesellschaft
- Ralf Pfirmann
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Novel aminophosphonium compounds
- Publication number 20040029723
- Publication date Feb 12, 2004
- Clariant GmbH
- Berthold Schiemenz
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Novel aminophosphonium compounds
- Publication number 20020193592
- Publication date Dec 19, 2002
- Clariant GmbH
- Berthold Schiemenz
- C07 - ORGANIC CHEMISTRY

Ralf Pfirmann

Person

Patents Grantslast 30 patents

Aminophosphonium compounds

Aminophosphonium compounds

Mixtures comprising tetrakis(pyrrolidino/piperdino)phosphonium salts

Preparation of trifluorobenzoic acids

Process for the preparation of isochroman-3-ones

Two-step production of 3-chloro-4-fluoro-benzoyl chloride by chlori...

Catalyst comprising an amidophosphonium salt for halex reactions

Process for preparing isochroman-3-ones

Process for producing quinazoline derivatives

Monoesters of carboxymethylene anthranilic acids and process for pr...

Process for the preparation of 3,5-difluoroaniline

Process for preparing N-carboxymethylene-4-chloro-anthranilic acid...

Process for the preparation of esters of aromatic carboxylic acid

Derivatives of 2, 3, 6-trifluorophenols and a process for their pre...

Process for the preparation of fluorine-containing chemical compounds

Process for the preparation of esters of aromatic carboxylic acids

Process for the preparation of aromatic compounds by decarboxylatio...

Process for the preparation of salts of substituted or unsubstitute...

Cis-4-(2,2,3,3-tetrafluoropropoxy)-cinnamonitrile and trans-4-(2,2,...

Substituted 2-chloro-3,4,5-trifluorobenzenes and a process for thei...

Trifluorophenylene compounds, process for their preparation, and th...

Halogenated cinnamic acids and esters thereof, processes for the pr...

Process for the preparation of 4-alkoxy-3,5,6-trifluoro-phthalic ac...

Process for the preparation of halogenated benzoic acids

2,3-difluoro-6-nitrobenzonitrile and 2-chloro-5,6-difluorobenzonitr...

Process for the preparation of chlorinated 4,5-difluorobenzoic acid...

Process for the preparation of substituted 2,3-difluoropyridines

Process for preparing fluorobenzonitriles

4-hydroxy-2,3,5-trifluorobenzoic acid and a process for its prepara...

Process for preparing alkyl 3-hydroxy-2, 4, 5-trifluorobenzoates an...

Patents Applicationslast 30 patents

Novel aminophosphonium compounds

Novel aminophosphonium compounds