Patents by Inventor Rudolf Wehrli

Rudolf Wehrli 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: 5048157
    Abstract: The drafting arrangement is provided with a guide element between the front roller pair and the operative unit formed by an apron and a roller. The guide element is disposed for guiding a length of fiber between the roller of the operative unit and the front roller pair. The guide element may be of D-shaped cross-section, circular cross-section or in the form of a curved plate. Where cylindrical, the guide element may also be rotated.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: September 17, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Rudolf Wehrli
  • Patent number: 5016323
    Abstract: The drawframe has a preliminary drafting zone with a draft of from 4 to 8 as well as a main drafting zone with a draft of at least 30. In addition, a deflecting rod is disposed in the preliminary drafting zone in order to deflect the flow of fiber by about 1 millimeter. The deflecting rod is positioned centrally between the nips of the rollers defining the preliminary drafting zone. The guide surface of the deflecting rod may be convexly rounded not only transversely but also longitudinally in guiding the fiber flow thereover.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: May 21, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Rudolf Wehrli, Herbert Stalder
  • Patent number: 4782087
    Abstract: Prop-1-ynyl-3-phenoxybenzyl-2,2-dimethyl-3-(2',2'-dihalovinyl)-cyclopropane -1-carboxylates of the formula ##STR1## in which X.sub.1 if fluorine, chlorine or bromine, and their use in combating pests.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: November 1, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Saleem Farooq, Peter Ackermann, Jozef Drabek, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4490375
    Abstract: 4-N,N-Dimethylcarbamoyloxy-6-aminopyrimidines, and salts thereof, of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another are each hydrogen, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -haloalkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.2 -C.sub.5 -alkenyl or C.sub.2 -C.sub.5 -alkynyl, or together they are a C.sub.2 -C.sub.5 -alkylene group, R.sub.3 is halogen or C.sub.1 -C.sub.5 -alkyl, and R.sub.4 is C.sub.1 -C.sub.5 -alkyl, or R.sub.3 is hydrogen and R.sub.4 is C.sub.2 -C.sub.5 -alkyl.There are described a process for producing these pyrimidines, their use for combating pests, and also the intermediates of the formula ##STR2## wherein R.sub.1 and R.sub.2 independently of one another are each hydrogen, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -haloalkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.2 -C.sub.5 -alkenyl or C.sub.2 -C.sub.5 -alkynyl, or together they are a C.sub.2 -C.sub.5 -alkylene group, R.sub.3 is halogen or C.sub.1 -C.sub.5 -alkyl, and R.sub.4 is C.sub.1 -C.sub.5 -alkyl, or R.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: December 25, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl Hoegerle, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4391810
    Abstract: 2-Methyl-4-N,N-dimethylcarbamoyloxy-6-amino-pyrimidines, and salts thereof, of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen, C.sub.1 -C.sub.5 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.2 -C.sub.5 -alkenyl or C.sub.2 -C.sub.5 -alkynyl, or together they are a C.sub.2 -C.sub.5 -alkylene group; a process for producing these pyrimidines; and their use for combating pests.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: July 5, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl Hoegerle, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4378372
    Abstract: The invention relates to cyclopropanecarboxylic acid esters of the formula ##STR1## wherein X.sub.1 is methyl or halogen, R.sub.1 is hydrogen, cyano, --CSNH.sub.2, allenyl, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl, and R.sub.2 is unsubstituted or substituted alkenyl or alkynyl.A process for obtaining these compounds and their use in pest control are also disclosed.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: March 29, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4377593
    Abstract: The invention relates to .alpha.-isopropyl- and .alpha.-cyclopropylphenylacetates of the formula ##STR1## wherein R.sub.1 is hydrogen, cyano, --CSNH.sub.2, allenyl, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl, R.sub.2 is unsubstituted or substituted alkenyl or alkynyl, R.sub.3 is isopropyl or cyclopropyl, and each of R.sub.4 and R.sub.5 is halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, or both together are the methylenedioxy radical.A process for the production of these compounds and their use in pest control are disclosed.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: March 22, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4377532
    Abstract: The invention relates to 3-phenoxybenzyl compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, cyano, --CSNH.sub.2, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl and R.sub.2 is alkenyl or alkynyl, as intermediates for the production of biocides.The preparation of the 3-phenoxybenzaldehydes employed as intermediates is described. Novel 3-phenoxybenzaldehydes used as starting materials and the production thereof are also disclosed.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: March 22, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4349567
    Abstract: Cyclopropanecarboxylic acid esters of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen, methyl, trifluoromethyl or methoxy, and X.sub.1 and X.sub.2 are each halogen.A process for producing the above compounds and their use in pest control, as well as .alpha.-haloethynyl-3-phenoxy-benzyl alcohols.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: September 14, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Jozef Drabek, Saleem Farooq, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4348408
    Abstract: The invention describes cyclopropanecarboxylic acid .alpha.-allenyl-3-phenoxybenzyl esters of the formula ##STR1## wherein X.sub.1 is halogen and each of Y.sub.1 and Y.sub.2 is hydrogen or halogen, a process for the production of these compounds, and the use thereof for controlling a variety of pests of animals and plants. The intermediates of the formula ##STR2## wherein X is hydroxyl or halogen and each of Y.sub.1 and Y.sub.2 is hydrogen or halogen, are also described.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: September 7, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4338468
    Abstract: .alpha.-Prop-1-ynyl-3-phenoxybenzyl alcohols of the formula ##STR1## wherein Y represents hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.3 alkoxy, cyano or dimethylamino, a process for their manufacture and their use as intermediates for the synthesis of compounds which are suitable for pest control, and which are especially suitable because of their low fish toxicity, for the control of rice pests e.g. Chilo suppressalis in rice paddies where fish are kept.
    Type: Grant
    Filed: December 9, 1980
    Date of Patent: July 6, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Saleem Farooq, Peter Ackermann, Jozef Drabek, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4335118
    Abstract: Phenylacetates of the formula ##STR1## wherein R.sub.1 is isopropyl or cyclopropyl, R.sub.2 is hydrogen, cyano, ethynyl, prop-1-ynyl or --CSNH.sub.2, and X.sub.1 is hydrogen, methyl, fluorine or chlorine, a process for their production and method of use thereof in pest control.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: June 15, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Hanspeter Fischer, Rudolph C. Thummel, Rudolf Wehrli
  • Patent number: 4331682
    Abstract: Cyclopropanecarboxylic acid-.alpha.-haloethynyl-m-phenoxybenzyl esters of the formula ##STR1## wherein R.sub.1 is ##STR2## R.sub.2 is hydrogen, fluorine, chlorine, bromine, methyl, trifluoromethyl or methoxy, andX.sub.1 is halogen,processes for producing them, and their use for combating insect pests.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: May 25, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Jozef Drabek, Saleem Farooq, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4309555
    Abstract: 1-(Dicyano-trimethylsiloxy)methyl-2,2-dimethylcyclopropane derivatives of the formula ##STR1## wherein R.sub.1 is ##STR2## and X.sub.1 is halogen. A process for the production of these compounds and their use as intermediates for obtaining biocidal compounds is described.
    Type: Grant
    Filed: December 9, 1980
    Date of Patent: January 5, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Jozef Drabek, Saleem Farooq, Laurenz Gsell, Rudolf Wehrli
  • Patent number: 4277494
    Abstract: Acetates of the formula ##STR1## wherein X.sub.1 represents hydrogen, halogen or C.sub.1 -C.sub.4 alkyl, X.sub.2 represents hydrogen or halogen, and Y represents hydrogen, halogen or methyl, processes for their manufacture and a method of controlling pests which comprises the use of these compounds.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: July 7, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Saleem Farooq, Peter Ackermann, Jozef Drabek, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4265897
    Abstract: Triazolylcarbamates of the formula ##STR1## wherein R.sub.1 is hydrogen, chlorine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkylthio, processes for producing them, and their use for combating insect pests.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: May 5, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Laurenz Gsell, Peter Ackermann, Rudolf Wehrli
  • Patent number: 4264624
    Abstract: .alpha.-Phenyl-.alpha.-cyclopropylacetates of the formula ##STR1## wherein X.sub.1 represents hydrogen, halogen or C.sub.1 -C.sub.4 alkyl, X.sub.2 represents hydrogen, methyl or halogen, R.sub.1 represents hydrogen, cyano, vinyl or ethynyl, and Y represents fluorine or bromine, processes for their manufacture, and a method of controlling pests which comprises the use of these novel esters.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: April 28, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Jozef Drabek, Peter Ackermann, Saleem Farooq, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
  • Patent number: 4225616
    Abstract: Cyclopropanecarboxylic acid esters of the formula ##STR1## in which X.sub.1 is fluorine, chlorine or bromine, R.sub.1 and R.sub.2 are each hydrogen, fluorine, chlorine, bromine or methyl, R.sub.3 and R.sub.4 are each hydrogen, fluorine, chlorine, bromine, methyl, methoxy, nitro or dimethylamine, or together are methylenedioxy, and R.sub.5 is hydrogen or methyl, processes for producing them, and their use in controlling insect pests.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: September 30, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Ackermann, Jozef Drabek, Saleem Farooq, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli