Patents by Inventor Colin Swithenbank

Colin Swithenbank 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).

  • Herbicidal 4-trifluoromethyl-3'-oxygen-substituted-4'-substituted diphenyl ethers
    Patent number: 4419122
    Abstract: The herbicidal 4-trifluoromethyl-3'-oxygen-substituted-4'-substituted diphenyl ethers comprise a class of compounds that are highly effective herbicides.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: December 6, 1983
    Assignee: Rohm and Haas Company
    Inventor: Colin Swithenbank
  • Herbicidal 4-trifluoromethyl-3'-nitrogen-substituted-4'-substituted diphenyl ethers
    Patent number: 4419124
    Abstract: The herbicidal 4-trifluoromethyl-3'-nitrogen-substituted-4'-substituted diphenyl ethers comprise a class of compounds that are highly effective herbicides.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: December 6, 1983
    Assignee: Rohm and Haas Company
    Inventor: Colin Swithenbank
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: 4415354
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a substituted alkoxy group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: November 15, 1983
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Preparation of 5-(2-halo-4-trifluoromethylphenoxy)-2-nitrobenzoic acid and salts and esters and amides
    Patent number: 4395570
    Abstract: A process for preparing a substantially pure, isomer free 5-(2-halo-4-trifluoromethylphenoxy)-2-nitrobenzoic acid or its esters, salts and amides by the basic condensation of a 4-trifluoromethylphenol and a 1-chloro-3-substituted-4-nitrobenzene followed by halogenation. All known previous routes afforded, in addition to the desired product, a number of inactive isomers.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: July 26, 1983
    Assignee: Rohm and Haas Company
    Inventor: Colin Swithenbank
  • Herbicidal 4-perfluoroacetyl-, 4-perfluoromethylthio-, 4-perfluoromethylsulfinyl-, and 4-perfluoromethylsulfonyl-4'-nitrodiphenyl ethers
    Patent number: 4358308
    Abstract: The 4-perfluoroacetyl-, 4-perfluoromethylthio-, 4-perfluoromethylsulfinyl-, and 4-perfluoromethylsulfonyl-4'-nitrodiphenyl ethers comprise a class of compounds that are highly effective herbicides.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: November 9, 1982
    Assignee: Rohm and Haas Company
    Inventor: Colin Swithenbank
  • Herbicidal 4-trifluoromethyl-4'-nitrodiphenyl ethers
    Patent number: 4350522
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a hydroxy group, an alkoxy group, an alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: September 21, 1982
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank
  • Herbicidal 4-trifluoromethyl 4-nitrodiphenyl ethers
    Patent number: 4330324
    Abstract: Compounds of the formula ##STR1## wherein X is a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a substituted alkoxy group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: May 18, 1982
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal substituted imidazoles
    Patent number: 4314844
    Abstract: This invention relates to novel substituted imidazoles of the formula: ##STR1## wherein R.sup.1 is a trifluoromethyl group, a halogen atom, an unsubstituted aryl group, a substituted aryl group, a heteroaromatic group, or a substituted heteroaromatic group;R.sup.2 and R.sup.3 are selected from a hydrogen atom, a halogen atom and a trifluoromethyl group, provided R.sup.2 and R.sup.3 are not concurrently halogen; andM is a hydrogen atom, an alkali or alkaline earth metal atom, a substituted carbonyl group, or other hydrolytically labile group.These compounds and compositions containing them exhibit herbicidal activity. Fungicidal activity of compounds of the invention is also shown.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: February 9, 1982
    Assignee: Rohm and Haas Company
    Inventors: Colin Swithenbank, Ted T. Fujimoto
  • Herbicidal nitrodiphenyl ethers
    Patent number: 4306900
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group;Y is a hydrogen atom or a halogen atom;R is CHOHR' or COR'; andR' is hydrogen or (C.sub.1 -C.sub.4)alkyl;and compositions containing these compounds which exhibit herbicidal activity.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: December 22, 1981
    Assignee: Rohm and Haas Company
    Inventors: Colin Swithenbank, Ted Fujimoto
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: 4220468
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, or an alkyl group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a substituted alkoxy group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: September 2, 1980
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: 4219352
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, andY is a hydrogen atom, a halogen atom, or a trihalomethyl group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: August 26, 1980
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4'nitrodiphenyl ethers
    Patent number: 4185995
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a hydroxy group, an alkoxy group, an alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: January 29, 1980
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: 4093446
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a substituted alkoxy group,And compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: August 31, 1976
    Date of Patent: June 6, 1978
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: 4076741
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, andY is a hydrogen atom, a halogen atom, or a trihalomethyl group,And compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: February 12, 1973
    Date of Patent: February 28, 1978
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4'nitrodiphenyl ethers
    Patent number: 4063929
    Abstract: Salts of compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, and Y is a hydrogen atom, a halogen atom, or a trihalomethyl group,And compositions containing these salts exhibit herbicidal activity.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: December 20, 1977
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4'nitrodiphenyl ethers
    Patent number: 4046798
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group,Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, andZ is a hydroxy group, an alkoxy group, and alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group,And compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: September 6, 1977
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Benzophenone herbicides
    Patent number: 3954875
    Abstract: Compounds of the formula ##SPC1##WhereinR is an alkyl or an allyl group,R' is an alkyl group,R" is an alkyl group, an alkoxy group, or a trihaloalkyl group, andn is 1 or 2And compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: May 4, 1976
    Assignee: Rohm and Haas Company
    Inventors: Colin Swithenbank, Wayne O. Johnson
  • 2-Cyano-diphenyl ethers
    Patent number: 3950379
    Abstract: Compounds of the formula ##SPC1##WhereinX is a halogen atom or a trihalomethyl group,Y is a hydrogen atom, a halogen atom, a trihalomethyl group, or an alkyl group,Z is a hydrogen atom, a halogen atom, a cyano group, a trihalomethyl group, an alkyl group, or an alkoxy group, andZ' is a halogen atom, a cyano group, a trihalomethyl group, or, when X is a halogen atom, a nitro group,and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: April 13, 1976
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih
  • Herbicidal 4-trifluoromethyl-4-nitrodiphenyl ethers
    Patent number: RE30361
    Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, andY is a hydrogen atom, a halogen atom, or a trihalomethyl group, and compositions containing these compounds exhibit herbicidal activity.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: August 5, 1980
    Assignee: Rohm and Haas Company
    Inventors: Horst O. Bayer, Colin Swithenbank, Roy Y. Yih