Patents by Inventor Klaus Sasse

Klaus Sasse 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).

  • Bis-halogen carbonyl anilines and process for the production
    Patent number: 3983172
    Abstract: Bis-halogen carbonyl anilines useful in the production of herbicides having the formula ##SPC1##WhereinX is fluorine or chlorine,Y is fluorine, chlorine, fluorocarbonyl, or chlorocarbonyl,Z is halogen, nitro, cyano, lower alkyl sulfonyl or carbalkoxy,R is lower alkyl, alkoxy, thioalkyl, phenyl, naphthyl, lower perhalogen alkyl, perhalogen alkoxy or perhalogen alkylthio,a and b represent a number from 0 to 5, with the proviso that a plus b is at the most 5,Are prepared by reacting an aryl carbamic acid fluoride having the formula ##SPC2##WhereinZ, r, a, b are as defined above with an acylating agent having the formula ##EQU1## wherein X and Y are as defined above in the presence of a tertiary amine at a temperature in the range of from -20.degree. to +40.degree.C.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: September 28, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Buttner, Erich Klauke, Klaus Sasse
  • 1-Methyl-2,3-dihydro-1,4-dithiinium methosulfate
    Patent number: 3963749
    Abstract: 1,4-DITHIENE SULFONIUM SALTS OF THE FORMULA ##SPC1##In whichR is alkyl, substituted alkyl, alkenyl, alkynyl of up to 8 carbon atoms; cycloalkyl, aralkyl; or aralkyl substituted in the aryl moiety;Z is hydrogen or alkyl, andA.sup.- is one equivalent of an anionAre outstandingly effective as plant growth regulants, e.g., as plant growth inhibitors.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: June 15, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Naumann, Klaus Lurssen, Klaus Sasse
  • Process for the production of N-haloformylcarbamic acid halide compounds
    Patent number: 3962327
    Abstract: N-haloformylcarbamic acid halide compounds of the formula ##EQU1## wherein R.sup.1 is an optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic radical; andX is a halogen selected from fluorine, chlorine or bromine;Are prepared by a process which comprises reacting an N-haloformylcarbamic acid thio ester of the formula ##EQU2## in which R.sup.1 and X are identified as above, andR.sup.2 represents an optionally substituted aliphatic or araliphatic radical,With at least 2 mols of fluorine, chlorine or bromide per thiol ester group at a temperature of -20.degree. to 100.degree.C.
    Type: Grant
    Filed: October 1, 1974
    Date of Patent: June 8, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans Georg Schlee, Klaus Sasse, Engelbert Kuhle
  • 2-Trifluoromethylimino-1,3-dithiolo [4,5-b]-quinoxalines
    Patent number: 3932406
    Abstract: 2-Trifluoromethylimino-1,3-dithiolo[4,5-b]-quinoxalines of the formula ##SPC1##In whichX is lower alkyl, lower alkoxy, trihalogeno-methyl, trihalogenomethoxy, halogen or nitro, andn is an integer from 0 to 4,Which possess insecticidal, acaricidal, fungicidal and nematocidal properties.
    Type: Grant
    Filed: April 23, 1974
    Date of Patent: January 13, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Buttner, Klaus Sasse, Ingeborg Hammann, Helmut Kaspers