Patents by Inventor Klaus Ditgens
Klaus Ditgens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4818762Abstract: Hydroxyalkynyl-azolyl derivatives of the formula ##STR1## in which Az is 1,2,4-triazolyl or imidazolyl,X is optionally substituted phenyl or alkyl,R is ##STR2## R.sup.1 is hydrogen or halogen, R.sup.2 is halogen,R.sup.3 is alkylthio, halogenoalkoxy, halogenoalkylthio, alkenyl, alkoxycarbonyl or cyano, or in each case optionally substituted phenyl, phenoxy, phenylthio, phenylalkoxy or phenylalkylthio,n is 0, 1 or 2,m is 0 or 1, andHet is optionally substituted dioxolanyl or dioxanyl,or an addition product thereof with acids or metal salts, which exhibit fungicidal activity.Type: GrantFiled: January 2, 1986Date of Patent: April 4, 1989Assignee: Bayer AktiengesellschaftInventors: Reinhard Lantzsch, Klaus Ditgens, Karl H. Buchel, Paul Reinecke, Wilhelm Brandes
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Patent number: 4747869Abstract: Substituted azoyl-ketones and -alcohols of the formula ##STR1## in which A is a nitrogen atom or the CH group,B is CO or CH(OH),R.sup.1 is alkyl, alkenyl, alkinyl, optionally substituted phenylalkyl, optionally substituted cycloalkyl or optionally substituted cycloalkylalkyl,R.sup.2 is optionally substituted cycloalkyl or the grouping --C(CH.sub.3).sub.2 R.sup.3, andR.sup.3 is alkyl having more than 2 carbon atoms, alkenyl, alkinyl or the --CH.dbd.O group or a derivative thereof,or addition products thereof with acids or metal salts, exhibit plant growth regulating and fungicidal properties, several intermediates therefor are new.Type: GrantFiled: April 18, 1985Date of Patent: May 31, 1988Assignee: Bayer AktiengesellschaftInventors: Wolfgang Kramer, Karl H. Buchel, Klaus Ditgens, Hans-Ludwig Elbe, Gerhard Jager, Manfred Jautelat, Klaus Lurssen, Paul Reinecke
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Patent number: 4717415Abstract: Herbicidal compositions comprising ##STR1## and as a synergist an amide of the formula ##STR2## in which R is halogenoalkyl.Type: GrantFiled: November 8, 1985Date of Patent: January 5, 1988Assignee: Bayer AktiengesellschaftInventors: Klaus Ditgens, Ulrich Heinemann, Winfried Lunkenheimer, Hans-Jochem Riebel, Jorg Stetter, Rudolf Thomas, Carl Fedtke
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Patent number: 4622333Abstract: Hydroxyalkynyl-azolyl derivatives of the formula ##STR1## in which Az is 1,2,4-triazolyl or imidazolyl,X is optionally substituted phenyl or alkyl,R is ##STR2## R.sup.1 is hydrogen or halogen, R.sup.2 is halogen,R.sup.3 is alkylthio, halogenoalkoxy, halogenoalkylthio, alkenyl, alkoxycarbonyl or cyano, or in each case optionally substituted phenyl, phenoxy, phenylthio, phenylalkoxy or phenylalkylthio,n is 0, 1 or 2,m is 0 or 1, andHet is optionally substituted dioxolanyl or dioxanyl,or an addition product thereof with acids or metal salts, which exhibit fungicidal activity.Type: GrantFiled: November 1, 1983Date of Patent: November 11, 1986Assignee: Bayer AktiengesellschaftInventors: Reinhard Lantzsch, Klaus Ditgens, Karl H. Buchel, Paul Reinecke, Wilhelm Brandes
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Patent number: 4524205Abstract: A process for the preparation of a herbicidally active 1-amino-1,3,5-triazone-2,4 (1H,3H)-dione of the formula ##STR1## comprising in a first stage at a temperature from about 0.degree. to 100.degree. C. reacting an isocyanate of the formulaR.sup.1 - NCO (II)with an isothio semicarbazone of the tautomeric formulas ##STR2## in which R.sup.3 and R.sup.4 each independently is hydrogen, alkyl, cycloalkyl, aralkyl o alkyl, cycloalkyl, aralkyl or aryl,thereby to form a urea derivative of the tautomeric formulas ##STR3## in a second stage at a temperature between about -50.degree. and 0.degree. C. reacting the urea derivative with phosgene (COCl.sub.Type: GrantFiled: October 21, 1983Date of Patent: June 18, 1985Assignee: Bayer AktiengesellschaftInventors: Gerhard Bonse, Reinhard Lantzsch, Henning Dorr, Wolfgang Kreiss, Karlfried Dickore, Klaus Ditgens, Eckart Kranz
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Patent number: 4488895Abstract: Novel N-Diazolylalkyl-haloacetanilides of the formula ##STR1## wherein A is oxygen, sulphur or the grouping <NR,wherein R is hydrogen or alkyl,R.sup.1 is hydrogen, alkyl or alkoxy,R.sup.2 is hydrogen, alkyl, alkoxy or halogen,R.sup.3 is hydrogen, alkyl, alkoxy or halogen,R.sup.4 is hydrogen or alkyl,X is hydrogen, alkyl, halogen, alkoxy, alkylthio, haloalkyl, alkenyl, alkynyl, alkoxycarbonyl, dialkylamino, cyano, phenyl, substituted phenyl, phenoxy, substituted phenoxy, phenylthio or substituted phenylthio, andZ is halogen,and in which the diazolyl radical is bonded via a carbon atom, and acid addition salts and metal salt complexes thereof.Type: GrantFiled: January 28, 1982Date of Patent: December 18, 1984Assignee: Bayer AktiengesellschaftInventors: Jorg Stetter, Klaus Ditgens, Rudolf Thomas, Ludwig Eue, Robert R. Schmidt
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Patent number: 4434292Abstract: Process for the preparation of pyrazole from hydrazine hydrate and acrolein comprising reacting hydrazine hydrate with acrolein in an aqueous-organic medium at a temperature between 20.degree.-80.degree. C. and then oxidizing the 2-pyrazoline formed, of the formula ##STR1## either directly or after first being isolated, with chlorine or an alkali metal hypochlorite or an alkaline earth metal hypochlorite and water or an aqueous-organic medium at a temperature between 0.degree. and 60.degree. C.Type: GrantFiled: September 8, 1981Date of Patent: February 28, 1984Assignee: Bayer AktiengesellschaftInventors: Ulrich Heinemann, Rudolf Thomas, Reinhard Lantzsch, Klaus Ditgens, Erhard Weber
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Patent number: 4423225Abstract: Process for the preparation of pyrazole by heating a pyrazoline derivative of the general formula ##STR1## in which R represents an optionally substituted phenyl radical, or an alkyl or halogenoalkyl radical, without the addition of an acid or base, at a temperature between 100.degree. and 200.degree. C. under a pressure between 1 mbar and 10 bars, optionally in the presence of a diluent.Type: GrantFiled: September 8, 1981Date of Patent: December 27, 1983Assignee: Bayer AktiengesellschaftInventors: Reinhard Lantzsch, Klaus Ditgens, Ulrich Heinemann, Rudolf Thomas, Erhard Weber
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Patent number: 4338119Abstract: Novel N-Diazolylalkyl-haloacetanilides of the formula ##STR1## wherein A is oxygen, sulphur or the grouping >NR,whereinR is hydrogen or alkyl,R.sup.1 is hydrogen, alkyl or alkoxy,R.sup.2 is hydrogen, alkyl, alkoxy or halogen,R.sup.3 is hydrogen, alkyl, alkoxy or halogen,R.sup.4 is hydrogen or alkyl,X is hydrogen, alkyl, halogen, alkoxy, alkylthio, haloalkyl, alkenyl, alkynyl, alkoxycarbonyl, dialkylamino, cyano, phenyl, substituted phenyl, phenoxy, substituted phenoxy, phenylthio or substituted phenylthio, andZ is halogen,and in which the diazolyl radical is bonded via a carbon atom, and acid addition salts and metal salt complexes thereof.Type: GrantFiled: September 10, 1979Date of Patent: July 6, 1982Assignee: Bayer AktiengesellschaftInventors: Jorg Stetter, Klaus Ditgens, Rudolf Thomas, Ludwig Eue, Robert R. Schmidt
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Patent number: 4295876Abstract: Novel N-(2,5-diazolyl)-alkyl-halogenoacetanilides of the general formmula ##STR1## in which A represents oxygen, sulphur or the grouping >NR,whereinR represents alkyl,R.sup.1 represents hydrogen, alkyl or alkoxy,R.sup.2 represents hydrogen, alkyl, alkoxy or halogen,R.sup.3 represents hydrogen, alkyl, alkoxy or halogen,R.sup.4 represents hydrogen or alkyl,R.sup.5 represents hydrogen, alkyl, alkoxy, alkylthio, dialkylamino, halogen, cyano or alkoxycarbonyl andZ represents halogen, and acid addition salts and metal salt complexes thereof are outstandingly effective as herbicides.Furthermore novel N-(2,5-diazolyl)-alkyl-anilines of the general formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and A have the above-mentioned meaning.Type: GrantFiled: April 23, 1980Date of Patent: October 20, 1981Assignee: Bayer AktiengesellschaftInventors: Jorg Stetter, Klaus Ditgens, Rudolf Thomas, Ludwig Eue, Robert R. Schmidt
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Patent number: 4256740Abstract: Synergistic arthropodicidal compositions comprising a carbamate, carboxylic acid ester or phosphate ester and an .alpha.-substituted-3,4-methylenedioxyphenylacetonitrile of the formula ##STR1## in which R represents hydrogen, alkyl, alkenyl, halogen or nitro,R.sup.1 represents alkyl or hydrogen, andR.sup.2 represents aralkyl, alkyl, alkenyl or cycloalkyl or may represent hydrogen, provided that R represents alkyl, alkenyl or nitro, orR.sup.1 and R.sup.2 together represent an alkylene radical.Type: GrantFiled: May 9, 1979Date of Patent: March 17, 1981Assignee: Bayer AktiengesellschaftInventors: Volker Mues, Wolfgang Behrenz, Klaus Ditgens, Thomas Schmidt
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Patent number: 4182771Abstract: Synergistic arthropodicidal compositions comprising a carbamate, carboxylic acid ester or phosphate ester and an .alpha.-substituted-3,4-methylenedioxyphenylacetonitrile of the formula ##STR1## in which R represents hydrogen, alkyl, alkenyl, halogen or nitro,R.sup.1 represents alkyl or hydrogen, andR.sup.2 represents aralkyl, alkyl, alkenyl or cycloalkyl or may represent hydrogen, provided that R represents alkyl, alkenyl or nitro, orR.sup.1 and R.sup.2 together represent an alkylene radical.Type: GrantFiled: November 14, 1977Date of Patent: January 8, 1980Assignee: Bayer AktiengesellschaftInventors: Volker Mues, Wolfgang Behrenz, Klaus Ditgens, Thomas Schmidt