Patents by Inventor Richard Sehring

Richard Sehring 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).

  • Patent number: 4639438
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 which may be identical to or different from each other, are each straight or branched alkyl of 1 to 3 carbon atoms;R.sub.3 is alkyl of 1 to 8 carbon atoms;X is sulfur or oxygen;Y is chlorine, bromine or fluorine; andn is 1 or 2.The compounds are useful as pesticides.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: January 27, 1987
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Richard Sehring, Wolfgang Buck, Ricarda Prokic-Immel, Sigmund Lust
  • Patent number: 4394159
    Abstract: This invention is directed to 2-chloro-6-nitro-aniline compounds of the formula ##STR1## wherein A represents hydrogen, a straight or branched alkyl radical having from 1 to 6 carbon atoms a cycloalkyl radical having from 3 to 6 carbon atoms, a chlorine-substituted or hydroxyl-sustituted alkyl radical having from 2 to 6 carbon atoms, or an allyl or trifluoroacetyl group,B represents hydrogen or a methyl, ethyl, n-propyl, or isopropyl group, orA and B represent together an alkylene radical optionally interrupted by oxygen, .dbd.NH or, .dbd.NCH.sub.3, and having up to 5 members, or the group .dbd.CH-N(CH.sub.3).sub.2,R represents hydrogen, fluorine, chlorine, or bromine or a trifluoromethyl, methyl, or methoxy group, and X represents oxygen or sulphur,and novel herbicidal compositions containing these compounds as active ingredients.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: July 19, 1983
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Wolfgang Buck, Richard Sehring, Gerbert Linden, Sigmund Lust
  • Patent number: 4364875
    Abstract: The method of preparing a compound of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen, alkyl of 1 to 8 carbon atoms, trifluoromethyl or acetyl;n is 1 when R.sub.1 has all the defined meanings, or 2 or 3 when R.sub.1 is halogen or alkyl;R.sub.2 is hydrogen; alkyl of 1 to 16 carbon atoms; alkenyl of 2 to 16 carbon atoms; alkinyl of 2 to 16 carbon atoms; monosubstituted alkyl of 2 to 6 carbon atoms, where the substituent is hydroxyl, alkoxy of 1 to 4 carbon atoms, phenoxy, halo-phenoxy, (alkyl of 1 to 4 carbon atoms) phenoxy, (alkoxy of 1 to 4 carbon atoms)phenoxy, nitro-phenoxy, cyano-phenoxy, amino or (alkyl of 1 to 4 carbon atoms)thio; benzyl; halo-benzyl; --NR.sub.3 R.sub.4 ; --CHR.sub.3 --COOR.sub.4 ; or --CHR.sub.3 --CONR.sub.4 R.sub.5, whereR.sub.3, R.sub.4 and R.sub.5 are each hydrogen or alkyl of 1 to 8 carbon atoms; andX.sub.1 and X.sub.2 are each hydrogen or halogen,which comprises reacting a compound of the formula ##STR2## wherein n, R.sub.1, X.sub.1 and X.sub.
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: December 21, 1982
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Richard Sehring, Wolfgang Buck
  • Patent number: 4275077
    Abstract: This invention is directed to novel urea derivatives of the general formula ##STR1## wherein A represents one of the groups ##STR2## X and Y, which may be identical to or different from each other, each represent hydrogen, chlorine or bromine;Z represents hydrogen or chlorine;Z' represents chlorine or fluorine; andZ" represents hydrogen, chlorine, or fluorine.The invention is also directed to the production of compounds of Formula I, their use as pesticides, and pesticidal agents comprising the novel compounds as active substances.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: June 23, 1981
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz-Manfred Becher, Richard Sehring, Walter Wirtz, Ricarda Prokic-Immel
  • Patent number: 4232172
    Abstract: An improved process for the preparation of 3,6-dichlorosalicylic acid by carboxylation of potassium 2,5-dichlorophenolate with carbon dioxide in xylene at elevated pressure, where the improvement consists of adding finely powdered, anhydrous potassium carbonate to the reaction mixture, whereby the yield of 3,6-dichloro-salicylic acid is significantly increased.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: November 4, 1980
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Manfred Becher, Richard Sehring
  • Patent number: 4150124
    Abstract: Compounds of the formula ##STR1## WHEREIN R.sub.1 is alkyl of 1 to 3 carbon atoms, andR.sub.2 is alkyl of 1 to 3 carbon atoms, phenyl, alkoxy of 1 to 3 carbon atoms or (alkyl of 1 to 4 carbon atoms)thio;The compounds are useful as insecticides, acaricides and fungicides.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: April 17, 1979
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Richard Sehring, Ricarda Prokic-Immel
  • Patent number: 4021424
    Abstract: Novel s-triazines of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of chlorine and methylthio, R.sub.2 is selected from the group consisting of mono- and dialkylamino with alkyls of 1 to 4 carbon atoms, R.sub.3 is selected from the group consisting of chlorine, methylthio, ethylthio and mono- and dialkylamino with alkyls of 1 to 4 carbon atoms and R.sub.4 is alkyl of 1 to 4 carbon atoms having herbicidal activity.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: May 3, 1977
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Hans Grabinger, Richard Sehring
  • Patent number: 3969403
    Abstract: An improved method of preparing 2-methoxy-3,6-dichloro-benzoic acid which comprises the step of oxidizing 2-methoxy-3,6-dichloro-benzyl alcohol into the correspondingly substituted benzoic acid, where the improvement resides in that the said benzyl alcohol is prepared by catalytically de-brominating 2-methoxy-5-bromo-3,6-dichloro-benzyl alcohol.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: July 13, 1976
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz Manfred Becher, Richard Sehring
  • Patent number: 3969404
    Abstract: An improved method of preparing 2-methoxy-3,6-dichloro-benzoic acid which comprises the step of oxidizing 2-methoxy-3,6-dichloro-benzyl alcohol into the correspondingly substituted benzoic acid, where the improvement resides in that the said benzyl alcohol is prepared by catalytically de-brominating 2-hydroxy-5-bromo-3,6-dichloro-benzyl alcohol, followed by methylation of the 2-hydroxy substituent of the de-brominated benzyl alcohol.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: July 13, 1976
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz Manfred Becher, Richard Sehring
  • Patent number: RE31717
    Abstract: This invention is directed to 2-chloro-6-nitro-aniline compounds of the formula ##STR1## wherein A represents hydrogen, a straight or branched alkyl radical having from 1 to 6 carbon atoms a cycloalkyl radical having from 3 to 6 carbon atoms, a chlorine-substituted or hydroxyl-substituted alkyl radical having from 2 to 6 carbon atoms, or an allyl or trifluoroacetyl group,B represents hydrogen or a methyl, ethyl, n-propyl, or isopropyl group, orA and B represent together an alkylene radical optionally interrupted by oxygen, .dbd.NH or, .dbd.NCH.sub.3, and having up to 5 members, or the group.dbd.CH--N(CH.sub.3).sub.2,R represents hydrogen, fluorine, chlorine, or bromine or a trifluoromethyl, methyl, or methoxy group, and X represents oxygen or sulphur,and novel herbicidal compositions containing these compounds as active ingredients.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: October 30, 1984
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Wolfgang Buck, Richard Sehring, Gerbert Linden, Sigmund Lust