Patents by Inventor Michael D. Matthewson

Michael D. Matthewson 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).

  • Synergistic compositions
    Patent number: 5290770
    Abstract: A method of controlling veterinary ectoparasites of mammals and birds of the sub-Orders Ixodoidea and Sarcoptiformes comprising the application of a parasiticidally effective, non-toxic amount of a pyrethroid of formula ##STR1## together with at least one parasiticidal organophosphoruscompound active against said ectoparasites.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: March 1, 1994
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Synergistic compounds
    Patent number: 5134132
    Abstract: Acaricidal compositions comprising a pyrethroid of formula ##STR1## wherein Z and Z.sup.1 are the same or different and each is halo and wherein X is hydrogen or cyano, provided that when Z and Z.sup.1 are both chloro, X must be cyano together with at least one organophosphorus compound, formulations containing them and their use for the control of veterinary ectoparasites of the sub-Orders Ixodoidea and Sarcoptiformes.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: July 28, 1992
    Inventor: Michael D. Matthewson
  • Novel synergistic compositions
    Patent number: 5096895
    Abstract: A method of controlling veterinary ectoparasites of mammals and birds of the sub-orders Ixodoidea and Sarcoptiformes comprising the application of a parasiticidally effective, non-toxic amount of a pyrethroid of formula ##STR1## together with at least one parasiticidal organophosphorus compound active against said ectoparasites.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: March 17, 1992
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Pesticidal formulations
    Patent number: 4940729
    Abstract: Pyrethroid esters of the formula (I) ##STR1## potentiate the activity of each other against arthropod pests. Values of R.sup.2 and R.sup.3 include halogen and R includes phenoxybenzyl and .alpha.-cyanophenoxybenzyl. Compositions comprise of two or more esters of (I) and formulations comprise such compositions in association with a carrier. The esters (I) are used to combat arthropods.
    Type: Grant
    Filed: January 8, 1986
    Date of Patent: July 10, 1990
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Synergistic compositions
    Patent number: 4897386
    Abstract: A method of controlling veterinary ectoparasites of mammals and birds of the sub-Orders Ixodoidea and Sarcoptiformes comprising the application of a parasiticidally effective, non-toxic amount of a pyrethroid of formula ##STR1## together with at least one parasiticidal organophosphoruscompound active against said ectoparasites.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: January 30, 1990
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Synergistic compositions
    Patent number: 4780459
    Abstract: Acaricidal compositions comprising a pyrethroid of formula ##STR1## wherein Z and Z.sup.1 are the same or different and each is halo and wherein X is hydrogen or cyano, provided that when Z and Z.sup.1 are both chloro, X must be cyano together with at least one organophosphorus compound, formulations containing them and their use for the control of veterinary ectoparasites of the sub-Orders Ixodoidea and Sarcoptiformes.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: October 25, 1988
    Assignee: Burroughs Wellcome Company
    Inventor: Michael D. Matthewson
  • Pesticidal formulations
    Patent number: 4404223
    Abstract: Pyrethroid esters of the formula (I) ##STR1## potentiate the activity of each other against arthropod pests. Values of R.sup.2 and R.sup.3 include halogen and R includes phenoxybenzyl and .alpha.-cyanophenoxybenzyl. Compositions comprise of two or more esters of (I) and formulations comprise such compositions in association with a carrier. The esters (I) are used to combat arthropods.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: September 13, 1983
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Synergistic compositions
    Patent number: 4341760
    Abstract: Acaricidal compositions comprising a pyrethroid of formula ##STR1## wherein Z and Z.sup.1 are the same or different and each is halo and wherein X is hydrogen or cyano, provided that when Z and Z.sup.1 are both chloro, X must be cyano together with at least one organophosphorus compound, formulations containing them and their use for the control of veterinary ectoparasites of the sub-Orders Ixodoidea and Sarcoptiformes.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: July 27, 1982
    Assignee: Burroughs Wellcome Co.
    Inventor: Michael D. Matthewson
  • Pest control
    Patent number: H692
    Abstract: A method of treating an animal for the prevention or control of infestation by insects of the Order Diptera which comprises application to the animal of a compound of formula ##STR1##
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: October 3, 1989
    Assignee: Burroughs Wellcome Co.
    Inventors: Michael D. Matthewson, Gerald G. Blackman