Patents by Inventor Dennis Lynn Fost

Dennis Lynn Fost 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).

  • Substituted 2-higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters and their use as miticides
    Patent number: 4115584
    Abstract: This invention relates to novel compounds which are represented by the following formula: ##STR1## wherein R.sub.1 is alkyl of 8-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl of 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, --CH.sub.2 OCH.sub.3, --CH.sub.2 OCH.sub.2 CH.sub.3 or --CH.dbd.CH--CO.sub.2 H;X is hydrogen, fluorine, chlorine, bromine, methyl or methoxy; andY is hydrogen, fluorine, chlorine, bromine, methyl or methoxy;Provided that at least one of X and Y is other than hydrogen.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: September 19, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost
  • Miticidal and aphicidal method utilizing 2-higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters
    Patent number: 4107325
    Abstract: This invention relates to a novel pesticidal, e.g., miticidal and aphicidal, method utilizing an active ingredient which is represented by the following formula: ##STR1## wherein R.sub.1 is alkyl of 8-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl of 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, --CH.sub.2 OCH.sub.3, --CH.sub.2 OCH.sub.2 CH.sub.3 or --CH.dbd.CH--CO.sub.2 H.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: August 15, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost
  • Preparation of chlorinated indazoles
    Patent number: 4084055
    Abstract: This invention relates to a novel process for preparing indazoles by the reaction of phosgene with indazolones. The resulting indazoles are useful as herbicidal compounds.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: April 11, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dennis Lynn Fost, Anthony David Wolf
  • 2-Higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters
    Patent number: 4082848
    Abstract: This invention relates to novel compounds useful for controlling mites which are represented by the following formula: ##STR1## wherein R.sub.1 is alkyl of 12-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl of 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, --CH.sub.2 OCH.sub.3, --CH.sub.2 OCH.sub.2 CH.sub.3 or --CH.dbd.CH--CO.sub.2 H.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: April 4, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost
  • Substituted 2-higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters and their use as miticides
    Patent number: 4070481
    Abstract: This invention relates to novel compounds which are represented by the following formula: ##STR1## wherein R.sub.1 is alkyl of 8-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl of 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, --CH.sub.2 OCH.sub.3, --CH.sub.2 OCH.sub.2 CH.sub.3 or --CH.dbd.CH--CO.sub.2 H;X is hydrogen, fluorine, chlorine, bromine, methyl or methoxy; andY is hydrogen, fluorine, chlorine, bromine, methyl or methoxy;Provided that at least one of X and Y is other than hydrogen.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: January 24, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost
  • Miticidal and aphicidal method utilizing 2-higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters
    Patent number: 4055661
    Abstract: This invention relates to a novel pesticidal, e.g., miticidal and aphicidal, method utilizing an active ingredient which is represented by the following formula: ##STR1## wherein R.sub.1 is an alkyl of 8-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl or 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, -CH.sub.2 OCH.sub.3, -CH.sub.2 OCH.sub.2 CH.sub.3 or -CH.dbd.CH-CO.sub.2 H.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: October 25, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost
  • Miticidal and aphicidal method utilizing 2-higher alkyl-3-hydroxy-1,4-naphthoquinone carboxylic acid esters
    Patent number: 4053634
    Abstract: This invention relates to a novel pesticidal, e.g., miticidal and aphicidal, method utilizing an active ingredient which is represented by the following formula: ##STR1## wherein R.sub.1 is alkyl of 8-14 carbon atoms either branched, cyclic or straight chain; andR.sub.2 is alkyl of 1-17 carbon atoms either branched or straight chain, alkenyl of 2-17 carbon atoms, cycloalkyl of 3-6 carbon atoms, alkoxy of 1-4 carbon atoms, --CH.sub.2 OCH.sub.3, --CH.sub.2 OCH.sub.2 CH.sub.3 or --CH.dbd.CH--CO.sub.2 H.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: October 11, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Russell Frank Bellina, Dennis Lynn Fost