Hellmut Hoffmann

Person

Wuppertal, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Pest-combating agents containing phosphorus-heterocyclic compounds
- Patent number 4,678,777
- Issue date Jul 7, 1987
- Bayer Aktiengesellschaft
- Bernd-Wieland Kruger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-(thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pestic...
- Patent number 4,609,646
- Issue date Sep 2, 1986
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of .alpha.-oxo-.alpha.-(3-alkoxycarbonyl-2,2-dimethyl-c...
- Patent number 4,489,013
- Issue date Dec 18, 1984
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-(Thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pestic...
- Patent number 4,473,558
- Issue date Sep 25, 1984
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alpha-hydroxy-phosphonic acid esters
- Patent number 4,420,435
- Issue date Dec 13, 1983
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-Thi-1,3,2-oxazaphospholanes
- Patent number 4,387,060
- Issue date Jun 7, 1983
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of styryl cyclopropane insecticide intermediates
- Patent number 4,358,409
- Issue date Nov 9, 1982
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3-(2,2-dichloro-vinyl)-2,2-dimethyl-cyclopropane-1-c...
- Patent number 4,356,127
- Issue date Oct 26, 1982
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 1,1-dichloroalkenes
- Patent number 4,342,704
- Issue date Aug 3, 1982
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of halogenoalkenes
- Patent number 4,330,482
- Issue date May 18, 1982
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-Oxo-3-methyl-2-butene phosphonic acid esters
- Patent number 4,317,783
- Issue date Mar 2, 1982
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3,3-dimethyl-cyclopropane-1,1,2-tricarboxylic acid d...
- Patent number 4,307,033
- Issue date Dec 22, 1981
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-ca...
- Patent number 4,296,241
- Issue date Oct 20, 1981
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of .alpha.-cyano-benzyl esters
- Patent number 4,294,762
- Issue date Oct 13, 1981
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2,2-Dimethyl-3-(2-bromo-2-phenyl-vinyl)-cyclopropanecarboxylic acid...
- Patent number 4,279,920
- Issue date Jul 21, 1981
- Bayer Aktiengesellschaft
- Rainer Fuchs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Decarbalkoxylation of carboxylic acid esters
- Patent number 4,276,225
- Issue date Jun 30, 1981
- Bayer Aktiengesellschaft
- Reinhard Lantzsch
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating arthropods with N-(O-ethyl-S-n-propyl-thiophosphoryloxy)-...
- Patent number 4,248,866
- Issue date Feb 3, 1981
- Bayer Aktiengesellschaft
- Christa Fest
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating pests with O-ethyl-S-n-propyl-N-alkylamino-methylidene th...
- Patent number 4,237,124
- Issue date Dec 2, 1980
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pesticidal O-alkyl-O-(1,5-disubstituted-1,2,4-triazolyl-(3)-thiono-...
- Patent number 4,229,444
- Issue date Oct 21, 1980
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating arthropods with 0-alkyl-0-trifluoromethylsulphonylphenyl-...
- Patent number 4,195,082
- Issue date Mar 25, 1980
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating pests with N-(aminomethylene)-(monothio and dithio)-phosp...
- Patent number 4,176,181
- Issue date Nov 27, 1979
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating pests with N-acetyl-0-(2-chloro-1-fluoro-ethyl)-thionopho...
- Patent number 4,166,850
- Issue date Sep 4, 1979
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating pests with O-alkyl-O-trifluoromethylsulphinylphenyl-thion...
- Patent number 4,164,575
- Issue date Aug 14, 1979
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Combating insects, acarids and nematodes with O-(1-fluoro-2-halo-et...
- Patent number 4,159,324
- Issue date Jun 26, 1979
- Bayer Aktiengesellschaft
- Dieter Arlt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkoxyethyl dithiophosphonic acid ester halides
- Patent number 4,140,734
- Issue date Feb 20, 1979
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
O-alkyl-S-alkyl-O-(4-trifluoromethylthio-phenyl)-(thiono)-thiol-pho...
- Patent number 4,139,615
- Issue date Feb 13, 1979
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
O-Alkyl-O-[8-chloro-quinoxal-2-yl]-thionoalkanephosphonic acid esters
- Patent number 4,134,978
- Issue date Jan 16, 1979
- Bayer Aktiengesellschaft
- Karl-Julius Schmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
O,S-dialkyl-O-(1-cyanoalkyl-3-substituted)-pyrazol(5)yl-thionothiol...
- Patent number 4,126,677
- Issue date Nov 21, 1978
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pesticidally active O-(1-fluoro-2-halogeno-ethyl)-thionophosphoric...
- Patent number 4,119,715
- Issue date Oct 10, 1978
- Bayer Aktiengesellschaft
- Hellmut Hoffmann
- C07 - ORGANIC CHEMISTRY

Hellmut Hoffmann

Person

Patents Grantslast 30 patents

Pest-combating agents containing phosphorus-heterocyclic compounds

2-(thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pestic...

Preparation of .alpha.-oxo-.alpha.-(3-alkoxycarbonyl-2,2-dimethyl-c...

2-(Thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pestic...

Alpha-hydroxy-phosphonic acid esters

2-Thi-1,3,2-oxazaphospholanes

Preparation of styryl cyclopropane insecticide intermediates

Preparation of 3-(2,2-dichloro-vinyl)-2,2-dimethyl-cyclopropane-1-c...

Process for the preparation of 1,1-dichloroalkenes

Process for the preparation of halogenoalkenes

1-Oxo-3-methyl-2-butene phosphonic acid esters

Preparation of 3,3-dimethyl-cyclopropane-1,1,2-tricarboxylic acid d...

Preparation of 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-ca...

Preparation of .alpha.-cyano-benzyl esters

2,2-Dimethyl-3-(2-bromo-2-phenyl-vinyl)-cyclopropanecarboxylic acid...

Decarbalkoxylation of carboxylic acid esters

Combating arthropods with N-(O-ethyl-S-n-propyl-thiophosphoryloxy)-...

Combating pests with O-ethyl-S-n-propyl-N-alkylamino-methylidene th...

Pesticidal O-alkyl-O-(1,5-disubstituted-1,2,4-triazolyl-(3)-thiono-...

Combating arthropods with 0-alkyl-0-trifluoromethylsulphonylphenyl-...

Combating pests with N-(aminomethylene)-(monothio and dithio)-phosp...

Combating pests with N-acetyl-0-(2-chloro-1-fluoro-ethyl)-thionopho...

Combating pests with O-alkyl-O-trifluoromethylsulphinylphenyl-thion...

Combating insects, acarids and nematodes with O-(1-fluoro-2-halo-et...

Alkoxyethyl dithiophosphonic acid ester halides

O-alkyl-S-alkyl-O-(4-trifluoromethylthio-phenyl)-(thiono)-thiol-pho...

O-Alkyl-O-[8-chloro-quinoxal-2-yl]-thionoalkanephosphonic acid esters

O,S-dialkyl-O-(1-cyanoalkyl-3-substituted)-pyrazol(5)yl-thionothiol...

Pesticidally active O-(1-fluoro-2-halogeno-ethyl)-thionophosphoric...