Patents by Inventor Hans U. Brechbuhler

Hans U. Brechbuhler 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: 4276302
    Abstract: Novel 2-(phenoxy-.alpha.-alkyl)-imidazolines of the formula ##STR1## wherein R.sub.1 and R.sub.2, each independently of the other, are methyl or chlorine, or together they are --(CH.sub.2).sub.3 or --(CH.sub.2).sub.4 group and R.sub.3 is ethyl, n-propyl or isopropyl, processes for obtaining these compounds and compositions containing them for the control of plant-damaging mites and mites which are parasites of animals.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: June 30, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans U. Brechbuhler, Gunter Mattern, Walter Traber
  • Patent number: 4225598
    Abstract: 2-Cyclopropylamino-4,6-diamino-s-triazine and acid addition salts thereof for combatting developmental stages of insects.
    Type: Grant
    Filed: November 21, 1978
    Date of Patent: September 30, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans U. Brechbuhler, Verena Laanio, Dagmar Berrer
  • Patent number: 4160831
    Abstract: 2-Cyclopropylamino-4-formamidino-6-amino-s-triazine of the formula ##STR1## wherein R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by lower alkoxy; or represents C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.4 -alkynyl, cyclopropyl, hydroxyl, methoxy or ethoxy,R.sub.2 represents hydrogen methyl or ethyl, orR.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic ring which can contain a further nitrogen atom or an oxygen atom,R.sub.3 represents methyl or ethyl,R.sub.4 represents methyl or ethyl, andR.sub.5 represents hydrogen or methyl for combatting developmental stages of insects.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: July 10, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Verena Laanio, Hans U. Brechbuhler, Dagmar Berrer
  • Patent number: 4160832
    Abstract: 2-Cyclopropylamino-4-formylamino-6-amino-s-triazines of the formula ##STR1## wherein R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by lower alkoxy, or represents C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.4 -alkynyl, cyclopropyl, hydroxy, methoxy or ethoxy,R.sub.2 represents hydrogen, methyl or ethyl, orR.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic ring which can contain a further nitrogen atom or an oxygen atom, andR.sub.3 represents hydrogen or methyl,And the acid addition salts thereof for combatting developmental stages of insects.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: July 10, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Verena Laanio, Hans U. Brechbuhler, Dagmar Berrer
  • Patent number: 4020066
    Abstract: New s-triazine derivatives of the formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl radical, andR.sub.2 represents a C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.5 -alkynyl or methoxy-C.sub.1 -C.sub.4 -alkyl radical, orR.sub.1 and R.sub.2 together with the adjacent nitrogen atom represent a heterocyclic ring, compositions containing these compounds as active ingredients and use of these compositions for the control of parasitic pests.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: April 26, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Rene Bosshard, Hans U. Brechbuhler
  • Patent number: 4020067
    Abstract: New triazinylamidines of the formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl radical, andR.sub.2 represents a C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.5 -alkynyl or methoxy-(C.sub.1 -C.sub.4)-alkyl radical, or R.sub.1 and R.sub.2 together with the N atom represent a heterocyclic ring, andR.sub.3 and R.sub.4 each represent a methyl or ethyl radical, compositions containing these compounds as active ingredients and use of these compositions for the control of parasitic pests.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: April 26, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Rene Bosshard, Hans U. Brechbuhler
  • Patent number: 3993662
    Abstract: New dicarboximides of the formula ##SPC1##WhereinR represents a phenyl mono- to trisubstituted, identically or differently, by fluorine, chlorine, bromine, iodine, trifluoromethyl, nitro, cyano, C.sub.1 --C.sub.4 -alkyl, methoxy or methylthio, or monosubstituted by a methylenedioxy group, andZ.sub.1 and Z.sub.2 each represent hydrogen, or together with the carbon atoms to which they are bound they represent a carbon-carbon bondAnd their use for controling insects are disclosed.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: November 23, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans U. Brechbuhler, Jean Claude Petitpierre