Patents by Inventor Tatao Luo

Tatao Luo 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 anilide insecticidal agents
    Patent number: 6359009
    Abstract: Pesticidal substituted anilide compounds having the structural formula I and compositions and methods comprising those compounds for the control of insect pests.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Robert Eugene Diehl, Tatao Luo, Michael Frank Treacy, Keith Douglas Barnes, Venkataraman Kameswaran
  • Herbicidal substituted 2-[1-(3-trans-chloro-allyloxyamino)alkylidene]-cyclohexane dione salts
    Patent number: 4741768
    Abstract: Cupric, lithium, and magnesium salts of trans-substituted 2-[1-(3-chloroallyloxyimino)alkylidene]-cyclohexane-1,3-dione and derivatives thereof. The compounds generally exhibit improved stability and enhanced shelf-life while retaining excellent pre-emergence and post-emergence grassy weed phytotoxicity. The compounds are useful as selective herbicides and at low dosages as plant growth regulating agents.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: May 3, 1988
    Assignee: Chevron Research Company
    Inventors: Rawls H. Frazier, Tatao Luo
  • Herbicidal trans-2-[(3-chloroallyloxyimino)alkyl]-5-(substitutedsulfinylalkyl)-cycl ohexane-1,3-diones and derivatives thereof
    Patent number: 4626276
    Abstract: Herbicidal trans-2-[(3-chloroallyloxyimino)alkyl]-5-(substitutedsulfinylalkyl)-cycloh exane-1,3-diones and derivatives thereof. The compounds can be prepared via oxidation of the corresponding 5-(substitutedthioalkyl) precursors. The compounds are especially useful as selective herbicides active against grassy weeds.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: December 2, 1986
    Assignee: Chevron Research Company
    Inventor: Tatao Luo
  • 1-carbalkoxyalkyl-3-aryloxy-4-(substituted-2'-carboxyphenyl)-azet-2-ones as plant growth regulators and herbicides
    Patent number: 4620867
    Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 is lower alkyl or benzyl; R.sup.2 is lower alkoxy, benzyloxy or the group ##STR2## where R.sup.3 is lower alkoxy; Ar is phenyl or phenyl substituted with 1 to 3 substituents independently selected from halogen, trihalomethyl, nitro, phenyl, lower alkoxy and lower alkyl; and X.sup.1 and X.sup.2 are independently hydrogen, halogen, lower alkoxy, or lower alkyl, or X.sup.1 and X.sup.2 taken together form an aromatic ring fused with the phenyl ring, provided that both X.sup.1 and X.sup.2 are not hydrogen show activity as plant growth regulators.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: November 4, 1986
    Assignee: Chevron Research Company
    Inventor: Tatao Luo
  • 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones as plant growth regulators
    Patent number: 4534786
    Abstract: 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones of the formula: ##STR1## wherein R.sub.1 is methyl or ethyl; R.sub.2 is lower alkyl; and X.sub.1 and X.sub.2 are independently hydrogen or halogen, are effective as plant growth regulators.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: August 13, 1985
    Assignee: Chevron Research Company
    Inventors: Tatao Luo, Louis Russo, Francis J. Freenor, III
  • 1-Carbalkoxyalkyl-3-aryloxy-4-(2'-carboxyphenyl)-azetidin-2-ones
    Patent number: 4479900
    Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 is lower alkyl or benzyl. R.sup.2 is lower alkoxy, benzyloxy, or the group ##STR2## where R.sup.3 is lower alkoxy; and Ar is phenyl optionally substituted with 1 to 3 substituents independently selected from halogen, trihalomethyl, nitro or lower alkyl, show plant growth regulating activity.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: October 30, 1984
    Assignee: Chevron Research Company
    Inventor: Tatao Luo
  • 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones as plant growth regulators
    Patent number: 4443372
    Abstract: 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones of the formula: ##STR1## wherein R.sub.1 is methyl or ethyl; R.sub.2 is lower alkyl; and X.sub.1 and X.sub.2 are independently hydrogen or halogen, are effective as plant growth regulators.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventors: Tatao Luo, Louis Russo, Francis J. Freenor, III
  • Herbicidal substituted 2-(1-(oxyamino)-alkylidene)-cyclohexane-1,3-diones
    Patent number: 4440566
    Abstract: Substituted 2-[1-(oxyamino)alkylidene]-cyclohexane-1,3-diones have herbicidal activity against grassy weeds.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: Tatao Luo
  • Method for the aminoalkylation of phenol
    Patent number: 4259486
    Abstract: The present invention relates to the aminoalkylation of phenol with 4-(alkenyl)morpholines, preferably in the presence of lithium chloride. The present invention further relates to the p-(morpholinoalkyl)phenols obtained by the above method.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: March 31, 1981
    Assignee: American Cyanamid Company
    Inventor: Tatao Luo
  • Herbicidal substituted 2-(1-(oxyamino)-alkylidene)-cyclohexane-1,3-diones
    Patent number: RE32489
    Abstract: Substituted 2-[1-(oxyamino)alkylidene]-cyclohexane-1,3-diones have herbicidal activity against grassy weeds.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: September 1, 1987
    Assignee: Chevron Research Company
    Inventor: Tatao Luo