Patents by Inventor Leland S. Pitt

Leland S. Pitt 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).

  • Thionophosphates
    Patent number: 4152372
    Abstract: Compounds which are useful as insecticide activators are described herein. The compounds are defined by the following formula: ##STR1## wherein R is selected from the group consisting of lower alkoxy, dimethyl, trimethyl, halogen, dihalogen, trifluoromethyl, acetyl, acetamido, carbomethoxy, carbethoxy, methylenedioxy and ##STR2## and R' is methyl or ethyl.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: May 1, 1979
    Assignee: Stauffer Chemical Company
    Inventors: George B. Large, Leland S. Pitt
  • Thionophosphate insecticide activators
    Patent number: 4123526
    Abstract: Compounds which are useful as insecticide activators are described herein. The compounds are defined by the following formula: ##STR1## wherein R is selected from the group consisting of lower alkoxy, dimethyl, trimethyl, halogen, dihalogen, trifluoromethyl, acetyl, acetamido, carbomethoxy, carbethoxy, methylenedioxy and ##STR2## and R' is methyl or ethyl.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: October 31, 1978
    Assignee: Stauffer Chemical Company
    Inventors: George B. Large, Leland S. Pitt
  • Diethyl 2-pyridine thionophosphonate as an insecticide activator
    Patent number: 4096251
    Abstract: The novel compound diethyl 2-pyridine thionophosphonate ##STR1## has been found to possess insecticidal activation properties when combined with the known insecticide N-(mercaptomethyl) phthalimide S-(O,O-dimethyl phosphorodithioate).
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: June 20, 1978
    Assignee: Stauffer Chemical Company
    Inventors: Leland S. Pitt, George B. Large, Alan MacDonald
  • Activated insecticide composition employing a certain phosphorodithioate and an activator
    Patent number: 4083970
    Abstract: A composition of matter is described herein which is useful as an activated insecticide.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: April 11, 1978
    Assignee: Stauffer Chemical Company
    Inventors: George B. Large, Leland S. Pitt
  • Substituted vinyl thiophosphate activators
    Patent number: 4072745
    Abstract: Compounds which are useful as insecticide activators are described herein. The compounds are defined by the following formula: ##STR1## wherein R is selected from the group consisting of chlorine, trifluoromethyl, methoxy, and methylenedioxy; and R.sup.1 and R.sup.2 can be the same or different and are selected from the group consisting of lower alkyl having from 1 to 4 carbon atoms, inclusive.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: February 7, 1978
    Assignee: Stauffer Chemical Company
    Inventors: Leland S. Pitt, George B. Large
  • Insecticide compositions
    Patent number: 4035490
    Abstract: The effect of the compound ##STR1## as an insecticide is enchanced by the addition of a compound of the formula ##STR2## wherein R and R.sub.1 are methyl or ethyl.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: July 12, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Leland S. Pitt
  • Phosphorus containing insecticide activators
    Patent number: 4004001
    Abstract: A composition of matter is described herein which is useful as an activator for insecticides. The activator composition is defined by the formula ##STR1## wherein R is selected from the group consisting of methyl, ethyl, n-propyl, i-propyl and i-butyl; R.sub.1 is selected from the group consisting of methyl, ethyl, n-propyl, i-propyl, n-butyl, and i-butyl; R.sub.2 is selected from the group consisting of phenyl, substituted phenyl wherein said substituents are selected from methyl, ethyl, i-propyl, t-butyl, methoxy, ethoxy and dimethylamino; phenalkyl and substituted phenalkyl wherein said substituents are selected from chlorine, methyl, i-propyl and methoxy.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: January 18, 1977
    Assignee: Stauffer Chemical Company
    Inventors: George B. Large, Leland S. Pitt
  • Insecticidal phthalimidothiophosphates activated with certain phosphorothionates
    Patent number: 3956486
    Abstract: A composition of matter is described herein which is useful as an activator for insecticides. The activator composition is defined by the formula: ##EQU1## wherein R is selected from the group consisting of hydrogen and lower alkyl; R.sub.1 is selected from the group consisting of hydrogen, alkyl and cycloalkyl; R.sub.2 is selected from the group consisting of lower alkoxy and ##EQU2## wherein R.sub.3 and R.sub.4 can be the same or different and are selected from the group consisting of hydrogen and lower alkyl.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: May 11, 1976
    Assignee: Stauffer Chemical Company
    Inventors: George B. Large, Leland S. Pitt