Patents by Inventor Caleb W. Holyoke, Jr.

Caleb W. Holyoke, Jr. 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 pyridyl sulfonamides
    Patent number: 4906288
    Abstract: Certain N-[(pyridyl or pyrimidyl)aminocarbonyl]arylsulfonamides, such as the compound methyl 2-[[N-(3-cyano-4,6-dimethylpyridin-2-yl)aminocarbonyl]aminosulfonyl]benzoa te, possess herbicidal activity.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: March 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Caleb W. Holyoke, Jr., Chi-Ping Tseng, William T. Zimmerman
  • Lower alkyl 2-[[N-(3-cyano-pyridin-2-yl)aminocarbonyl]aminosulphonyl]benzoate derivatives having herbicidal activity
    Patent number: 4723991
    Abstract: Certain N-[(pyridyl or pyrimidyl)aminocarbonyl]arylsulfonamides, such as the compound methyl 2-[[N-(3-cyano-4,6-dimethylpyridin-2-yl)aminocarbonyl]aminosulfonyl]benzoa te, possess herbicidal activity.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: February 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Caleb W. Holyoke, Jr., Chi-Ping Tseng, William T. Zimmerman
  • Ureidosulfenyl carbamate nematicides
    Patent number: 4316911
    Abstract: Plant parasitic nematodes are controlled by ureidosulfenyl carbamates such as 2-(dimethylamino)-N-[[N-methyl-N-[N-methyl-N-(2-propynylaminocarbonyl)amin othio]aminocarbonyloxy]]-2-oxoethanimidothioic acid, methyl ester.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: February 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Caleb W. Holyoke, Jr.
  • Agricultural stannanamines
    Patent number: 4309358
    Abstract: N,N-diaryl stannanamines such as 1,1,1-tributyl-N-[2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-(tr ifluoromethyl)phenyl] stannanamine are useful as miticides, insecticides, fungicides, ovicides and herbicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Caleb W. Holyoke, Jr.
  • Pesticidal phosphorus sulfenamides
    Patent number: 4302451
    Abstract: [(N,N-diarylamino)thio]phosphoramide compounds such as N-[N-[2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-(trifluoromethy l)phenyl]amino thio]-N-(1-methylethyl)phosphoramidic acid, diethyl ester, are useful as miticides, insecticides, fungicides and ovicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: November 24, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Caleb W. Holyoke, Jr.