Patents by Inventor David M. Roush

David M. Roush 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).

  • Photoactive bithienyl pesticides
    Patent number: 4645777
    Abstract: Bithienyl compounds of the following structural formula are phototoxic insecticides and acaricides: ##STR1## wherein R.sub.1 is selected from hydrogen, halogen, alkyl, haloalkyl, alkoxy, and haloalkoxy;R.sub.2 is selected from hydrogen and halogen;R.sub.3 is selected from hydrogen, alkyl, phenyl, and thienyl; andR.sub.4 is selected from hydrogen, halogen, alkyl, and haloalkyl.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: February 24, 1987
    Assignee: FMC Corporation
    Inventors: Susan E. Burkart, Richard B. Phillips, David M. Roush
  • Pesticidal vinyl phosphoric esters
    Patent number: 4621078
    Abstract: Vinyl phosphoric esters of the following formula are effective in the control of insects and acarids: ##STR1## wherein R.sub.1 is lower alkoxy;R.sub.2 is selected from lower alkoxy and lower thioalkyl;R.sub.3 is selected from lower alkyl, phenyl, and halophenyl;R.sub.4 is selected from hydrogen, lower alkyl, halogen, and lower thioalkyl;V is selected from hydrogen, halogen, lower alkyl, lower alkoxy, lower haloalkyl, amino, mono and dialkyl substituted amino, lower alkoxy carbonyl, lower thioalkyl, lower alkyl sulfonyl, nitro, and phenyl;W is oxygen or sulfur;Y is halogen;m is 0-2; andn is 0-2.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: November 4, 1986
    Assignee: FMC Corporation
    Inventor: David M. Roush
  • Cyclohexadiene carboxylate insecticide intermediates
    Patent number: 4486588
    Abstract: Precursors to benzyl compounds, useful in the manufacture of pyrethroid insecticides, are prepared by regiospecific addition of an enamine to a heterocyclic diene accompanied by elimination of volatile by-products.
    Type: Grant
    Filed: October 19, 1982
    Date of Patent: December 4, 1984
    Assignee: FMC Corporation
    Inventors: William A. Van Saun, David M. Roush