Patents by Inventor David Teh-Wei Chou

David Teh-Wei Chou 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: 7879897
    Abstract: The invention relates to 5-sub-stituted-oxyalkylaminopyrazole derivatives of the formula or salts thereof wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use for the control of pests including arthropods and helminths.
    Type: Grant
    Filed: August 21, 2004
    Date of Patent: February 1, 2011
    Assignee: Merial Limited
    Inventors: David Teh-Wei Chou, Stefan Schnatterer, Werner Knauf, Karl Seeger
  • Patent number: 7872038
    Abstract: The invention relates to 1-(2,4,6-trisubstituted-phenyl)-5-amino-4-substituted-pyrazole derivatives of formula (I) or salts thereof wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use for the control of pests (including arthropods and helminths).
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: January 18, 2011
    Assignee: Merial Limited
    Inventors: Stefan Schnatterer, David Teh-Wei Chou, Werner Knauf, Daniela Jans, Karl Seeger
  • Patent number: 7678384
    Abstract: Disclosed are 5-(vinylamino)pyryazole derivatives of formula I or pesticidally acceptable salts thereof (I) wherein, for example, W is ?N—, ?CH—, ?CR6— or ?C(NH2)-, R6 is halogen or haloalkyl, R1 is cyano, halogen, alkyl, haloalkyl or —CS—NH2, R2 is alkyl or cycloalkyl, R3 is alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heterocyclyl, aralkyl, heterocyclylalkyl, —CO—O—R9, —CO—R10, —SO—R?, —SO2—R12; R9, R10, R11 and R12 are for example organic groups, R4 is halogen or —NH2, R5 is haloalkyl, haloalkoxy, halogen or —SF5, and n is an integer selected from 0, 1 or 2. These compounds cab be used for controlling pests, especially by treatment of domestic animals.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: March 16, 2010
    Assignee: Merial Limited
    Inventors: David Teh-Wei Chou, Maria Thönessen, Anke Kuhlmann, Uwe Döller, Waltraud Hempel
  • Patent number: 7659288
    Abstract: The invention relates to 5-aminoalkylaminopyrazole derivatives of formula (I) or salts thereof: wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use for the control of pests (including arthropods and helminths).
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: February 9, 2010
    Assignee: Merial Limited
    Inventors: Stefan Schnatterer, David Teh-Wei Chou, Werner Knauf, Daniela Jans, Karl Seeger
  • Patent number: 7576107
    Abstract: The invention relates to the use for the control of pests, of a compound which is a 5-substituted-alkylaminopyrazole derivative of formula (I) or a salt thereof: wherein the various symbols are as defined in the description, to novel 5-substituted-alkylaminopyrazole derivatives and pesticidal compositions thereof, and to processes for their preparation.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 18, 2009
    Assignee: Merial Limited
    Inventors: David Teh-Wei Chou, Henricus Maria Marinus Bastiaans, Anke Kuhlmann, Maria-Theresia Thönessen, Stefan Schnatterer, Uwe Döller, Jamin Huang, Karl Seeger, Andrew Scribner, Adalberto A. Perez De Leon
  • Patent number: 7517877
    Abstract: The invention relates to the use for the control of parasites in animals, of a compound which is a 5-substituted-alkylaminopyrazole derivative of formula (I) or a salt thereof: wherein the various symbols are as defined in the description, to novel 5-substituted-alkylaminopyrazole derivatives and pesticidal compositions thereof, and to processes for their preparation.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: April 14, 2009
    Assignee: Merial Limited
    Inventors: David Teh-Wei Chou, Henricus Maria Martinus Bastiaans, Anke Kuhlmann, Maria-Theresia Thönessen, Stefan Schnatterer, Uwe Döller, Jamin Huang, Karl Seeger, Andrew Scribner, Adalberto A. Perez De Leon
  • Patent number: 7504362
    Abstract: 5-Substituted-sulfonylaminopyrazole derivatives of formula (I): or salts thereof, wherein the various symbols are as defined in the description, and pesticidal compositions thereof, processes for their preparation, and methods for their use for the control of arthropods (including insects and arachnids) and helminths (including nematodes).
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: March 17, 2009
    Assignee: Merial Limited
    Inventors: Uwe Döller, David Teh-Wei Chou, Merwyn Steinsberger, Michael Maier, Anke Kuhlmann, Karl Seeger, David William Hawkins, Stanley Thomas Derek Gough, David Treadway Manning
  • Publication number: 20090069571
    Abstract: The invention relates to a process for the preparation of 5-alkylthioethylamino-1-phenyl-pyrazoles of formula (I) and the preparation of 5-methylamino-1-phenylpyrazole intermediates.
    Type: Application
    Filed: April 3, 2008
    Publication date: March 12, 2009
    Inventors: Stefan Schnatterer, David Teh-Wei Chou, Uwe Doller
  • Patent number: 7468381
    Abstract: A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 23, 2008
    Inventors: Scot Kevin Huber, David Teh-Wei Chou, Stefan Schnatterer, Henricus Maria Martinus Bastiaans
  • Publication number: 20080281107
    Abstract: The invention relates to a process for the preparation of 5-alkylthioethylamino-1-phenyl-pyrazoles of formula (I) and the preparation of 5-methylamino-1-phenylpyrazole intermediates.
    Type: Application
    Filed: April 3, 2008
    Publication date: November 13, 2008
    Inventors: Stefan Schnatterer, David Teh-Wei Chou, Uwe Doller
  • Publication number: 20080064698
    Abstract: The invention relates to 1-(2,4,6-trisubstituted-phenyl)-5-amino-4-substituted-pyrazole derivatives of formula (I) or salts thereof wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use for the control of pests (including arthropods and helminths).
    Type: Application
    Filed: February 25, 2005
    Publication date: March 13, 2008
    Applicant: Bayer CropScience S.A.
    Inventors: Stefan Schnatterer, David Teh-Wei Chou, Werner Knauf, Daniela Jans, Karl Seeger
  • Patent number: 7067548
    Abstract: A method of controlling parasites in or on an animal comprising orally administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: June 27, 2006
    Assignee: Rhone-Poulenc Agro
    Inventors: Scot Kevin Huber, Yves Ribeill, Susan Marie McComb, Michael James Malaska, David Teh-Wei Chou, Adalberto Perez de Leon
  • Patent number: 6992099
    Abstract: A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: January 31, 2006
    Assignee: Aventis Cropscience S.A.
    Inventors: Scot Kevin Huber, David Teh-Wei Chou, Stefan Schnatterer, Henricus Maria Martinus Bastiaans
  • Publication number: 20040010016
    Abstract: A method of controlling parasites in or on an animal comprising orally administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 15, 2004
    Applicant: Aventis CropScience, S.A.
    Inventors: Scot Kevin Huber, Yves Ribeill, Susan Marie McComb, Michael James Malaska, David Teh-Wei Chou, Adalberto Perez de Leon
  • Patent number: 6630499
    Abstract: A method of controlling parasites in or on an animal comprising orally administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: October 7, 2003
    Assignee: Aventis CropScience, S.A.
    Inventors: Scot Kevin Huber, Yves Ribeill, Susan Marie McComb, Michael James Malaska, David Teh-Wei Chou, Adalberto Perez de Leon
  • Publication number: 20030176466
    Abstract: A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Application
    Filed: April 4, 2003
    Publication date: September 18, 2003
    Applicant: Aventis CropScience S.A.
    Inventors: Scot Kevin Huber, David Teh-Wei Chou, Stefan Schnatterer
  • Patent number: 6569886
    Abstract: A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: May 27, 2003
    Assignee: Aventis CropScience S.A.
    Inventors: Scot Kevin Huber, David Teh-Wei Chou, Stefan Schnatterer, Henricus Maria Martinus Bastiaans
  • Patent number: 6531501
    Abstract: A method of controlling parasites in or on an animal comprising orally administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: March 11, 2003
    Assignee: Aventis CropScience, S.A.
    Inventors: Scot Kevin Huber, Yves Ribeill, Susan Marie McComb, Michael James Malaska, David Teh-Wei Chou, Adalberto Perez de Leon
  • Publication number: 20020111352
    Abstract: A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.
    Type: Application
    Filed: December 4, 2000
    Publication date: August 15, 2002
    Inventors: Scot Kevin Huber, David Teh-Wei Chou, Stefan Schnatterer, Henricus Maria Martinus Bastiaans
  • Patent number: 6160002
    Abstract: A method of controlling parasites in or on an animal comprising orally administering to the animal a parasitically effective, substantially non-emetic 1-arylpyrazole.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: December 12, 2000
    Assignee: Rhone-Poulenc Agro
    Inventors: Scot Kevin Huber, Yves Ribeill, Susan Marie McComb, Michael James Malaska, David Teh-Wei Chou, Adalberto Perez de Leon