Patents by Inventor Hsiao-Ling M. Chin
Hsiao-Ling M. Chin 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).
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Patent number: 5925795Abstract: This invention relates to processes for the preparation of aryl-.beta.-diketones and aryl-pyrimidine ketones. In addition, this invention relates to the preparation of aryl-.beta.-triketones and dimethyl aminomethylene .beta.-diketones, which are useful as crop protection intermediates.Type: GrantFiled: September 16, 1996Date of Patent: July 20, 1999Assignee: Zeneca LimitedInventors: Raymond A. Felix, Hsiao-Ling M. Chin, Frank X. Woolard, David L. Lee
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Patent number: 5763357Abstract: Herbicidal 3-substituted pyridine compounds and derivatives thereof of the formula: ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 1, 2 or 3 ring nitrogen atoms with the remainder of the ring atoms being carbon; a substituted or unsubstituted 5-membered heteroaryl group having a ring heteroatom of oxygen or sulfur with the remainder of the ring atoms being carbon; or a substituted or unsubstituted 5-membered heteroaryl group having one ring nitrogen atom and either an oxygen or sulfur ring heteroatom with the remainder of the ring atoms being carbon. Herbicidal compositions containing such 3-substituted pyridine compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed 3-substituted pyridine derivatives.Type: GrantFiled: November 1, 1996Date of Patent: June 9, 1998Assignee: Zeneca LimitedInventors: Hsiao-Ling M. Chin, Nhan H. Nguyen, David B. Kanne, David L. Lee
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Patent number: 5707930Abstract: Herbicidal 4-cycloalkyl-5-substituted pyrimidine compounds of the formula ##STR1## are described. Herbicidal compositions containing such substituted-pyrimidinyl compounds and methods of controlling undesirable vegetation employing these compounds are also disclosed. The compounds in which XR, is hydroxyl are also useful as intermediates for producing the disclosed substituted-pyrimidinyl derivatives.Type: GrantFiled: September 16, 1996Date of Patent: January 13, 1998Assignee: Zeneca LimitedInventors: Raymond A. Felix, Hsiao-Ling M. Chin, Frank X. Woolard, David L. Lee, David B. Kanne
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Patent number: 5672567Abstract: Herbicidal substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof of the formula ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 2 or 3 ring nitrogen atoms or a substituted or unsubstituted 5-membered heteroaryl group having two ring heteroatoms, one of the ring heteroatoms being nitrogen and the other being sulfur or oxygen. Herbicidal compositions containing such substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed substituted hydroxybenzyl-heteroaryl derivatives.Type: GrantFiled: March 25, 1996Date of Patent: September 30, 1997Assignee: Zeneca LimitedInventors: Hsiao-Ling M. Chin, Yi-Qiu Wei, Nhan H. Nguyen, David B. Kanne
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Patent number: 5670453Abstract: Herbicidal substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof of the formula ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 2 or 3 ring nitrogen atoms or a substituted or unsubstituted 5-membered heteroaryl group having two ring heteroatoms, one of the ring heteroatoms being nitrogen and the other being sulfur or oxygen. Herbicidal compositions containing such substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed substituted hydroxybenzyl-heteroaryl derivatives.Type: GrantFiled: June 6, 1995Date of Patent: September 23, 1997Assignee: Zeneca LimitedInventors: Hsiao-Ling M. Chin, Yi-Qiu Wei, Nhan H. Nguyen, David B. Kanne
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Patent number: 5595958Abstract: Herbicidal 3-substituted pyridine compounds and derivatives thereof of the formula: ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 1, 2 or 3 ring nitrogen atoms with the remainder of the ring atoms being carbon; a substituted or unsubstituted 5-membered heteroaryl group having a ring heteroatom of oxygen or sulfur with the remainder of the ring atoms being carbon; or a substituted or unsubstituted 5-membered heteroaryl group having one ring nitrogen atom and either an oxygen or sulfur ring heteroatom with the remainder of the ring atoms being carbon. Herbicidal compositions containing such 3-substituted pyridine compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed 3-substituted pyridine derivatives.Type: GrantFiled: May 2, 1994Date of Patent: January 21, 1997Assignee: Zeneca LimitedInventors: Hsiao-Ling M. Chin, Nhan H. Nguyen, David B. Kanne, David L. Lee
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Patent number: 5308826Abstract: 4-substituted pyridyl-3-carbinols of the formula ##STR1## wherein R is hydrogen, or an acyl, alkyl or carbamyl group exhibit desirable preemergent and postemergent herbicidal activity. Also disclosed are herbicidal compositions comprising such compounds and; a method of controlling undesirable vegetation employing such compounds. The compounds wherein AR is hydroxyl serve as useful intermediates for the production of the alpha-benzyl substituted compounds as well as exhibiting herbicidal activity.Type: GrantFiled: April 22, 1993Date of Patent: May 3, 1994Assignee: Zeneca LimitedInventors: Hsiao-Ling M. Chin, Yi Q. Wei, Nhan H. Nguyen
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Patent number: 4808733Abstract: An intermediate compound having the structural formula ##STR1## wherein X is oxygen or sulfur;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n --wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.1 and R.sup.3 together are alkylene having 2-5 cation atoms; orR.sup.2 and R.sup.4 together are alkylene having 2-5 carbon atoms; andR.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifuoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n --wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.C R.sup.d wherein R.Type: GrantFiled: December 21, 1987Date of Patent: February 28, 1989Assignee: Stauffer Chemical CompanyInventors: Christopher G. Knudsen, William J. Michaely, Donald R. James, Hsiao-Ling M. Chin
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Patent number: 4781751Abstract: Compounds of the formula ##STR1## wherein R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl; trifluoromethyl or difluoromethyl;R.sup.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, halogen, phenyl or substituted phenyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene;R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl or substituted phenyl, with the proviso that R.sup.1 and R.sup.3 are not both phenyl or substituted phenyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen, halogen or C.sub.1 -C.sub.4 alkyl;R.sup.6 is halogen, cyano, nitro, trifluoromethyl, --C(O)--OR.sup.f wherein R.sup.f is C.sub.1 -C.sub.4 alkyl, or --C(O)NR.sub.2.sup.b wherein R.sup.b is hydrogen or C.sub.1 -C.sub.2 alkyl;R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.Type: GrantFiled: October 2, 1987Date of Patent: November 1, 1988Assignee: Stauffer Chemical CompanyInventor: Hsiao-Ling M. Chin
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Patent number: 4780123Abstract: Compounds having the formula ##STR1## wherein X is oxygen or sulfur;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together form a single bond; orR.sup.1 and R.sup.3 together are alkylene having 2-5 carbon atoms; orR.sup.2 and R.sup.4 together are alkylene having 2-5 carbon atoms; andR.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.Type: GrantFiled: December 21, 1987Date of Patent: October 25, 1988Assignee: Stauffer Chemical CompanyInventors: Christopher G. Knudsen, William J. Michaely, Donald R. James, Hsiao-Ling M. Chin
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Patent number: 4780124Abstract: Compounds having the formula ##STR1## wherein X is sulfur;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together form a single bond; orR.sup.1 and R.sup.3 together are alkylene having 2-5 carbon atoms; orR.sup.2 and R.sup.4 together are alkylene having 2-5 carbon atoms; andR.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10)--NR.sup.Type: GrantFiled: December 21, 1987Date of Patent: October 25, 1988Assignee: Stauffer Chemical CompanyInventors: Christopher G. Knudsen, William J. Michaely, Donald R. James, Hsiao-Ling M. Chin
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Patent number: 4741755Abstract: Compounds having the formula ##STR1## wherein X is oxygen or sulfur;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together form a single bond; orR.sup.1 and R.sup.3 together are alkylene having 2-5 carbon atoms; orR.sup.2 and R.sup.4 together are alkylene having 2-5 carbon atoms; andR.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.Type: GrantFiled: June 9, 1986Date of Patent: May 3, 1988Assignee: Stauffer Chemical CompanyInventors: Christopher G. Knudsen, William J. Michaely, Donald R. James, Hsiao-Ling M. Chin
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Patent number: 4506088Abstract: Herbicide antidote compounds having the formula ##STR1## in which R is halomethyl wherein halo refers to chlorine, bromine or iodine and the methyl group is mono- or di-substituted;R.sub.1 is selected from the group consisting of alkyl having 1-4 carbon atoms, inclusive; phenyl, and methylaminocarboxyethyl;R.sub.2 is selected from the group consisting of hydrogen and methyl, and,R.sub.3 is selected from the group consisting of alkyl having 1-4 carbon atoms, inclusive; p-toluenesulfonyl; p-chlorophenylsulfonyl; halophenyl wherein halo refers to a member of the group consisting of chlorine, bromine and iodine and wherein said phenyl group may be mono-, di-, or tri-halosubstituted on the same or different substituents; and, halomethylphenyl wherein halo refers to a member of the group consisting of fluorine, chlorine, bromine and iodine and said methyl group may be mono-, di-, or tri-substituted.Type: GrantFiled: April 25, 1983Date of Patent: March 19, 1985Assignee: Stauffer Chemical CompanyInventor: Hsiao-Ling M. Chin
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Patent number: 4400203Abstract: Herbicide antidote compounds having the formula ##STR1## in which R is halomethyl wherein halo refers to chlorine, bromine or iodine and the methyl group is mono- or di-substituted;R.sub.1 is selected from the group consisting of alkyl having 1-4 carbon atoms, inclusive; phenyl, and methylaminocarboxyethyl;R.sub.2 is selected from the group consisting of hydrogen and methyl, and,R.sub.3 is selected from the group consisting of alkyl having 1-4 carbon atoms, inclusive; p-toluenesulfonyl; p-chlorophenylsulfonyl; halophenyl wherein halo refers to a member of the group consisting of chlorine, bromine and iodine and wherein said phenyl group may be mono-, di-, or tri-halosubstituted on the same or different substituents; and, halomethylphenyl wherein halo refers to a member of the group consisting of fluorine, chlorine, bromine and iodine and said methyl group may be mono-, di-, or tri-substituted.Type: GrantFiled: December 29, 1980Date of Patent: August 23, 1983Assignee: Stauffer Chemical CompanyInventor: Hsiao-Ling M. Chin
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Patent number: 4400529Abstract: Herbicide antidote compounds, compositions, and methods of use are disclosed in which compounds of the formula ##STR1## wherein R can be selected from the group consisting of alkyl groups having from about 1 to about 7 carbon atoms, aryl, and substituted aryl groups in which the substituent group can be lower alkyl having from about 1 to about 3 carbon atoms, substituted lower alkyls of from about 1 to about 3 carbon atoms in which the substituent group is halogen or nitro, lower alkoxy having from about 1 to about 3 carbon atoms; R.sub.1 can be selected from the group consisting of hydrogen or lower alkyl having from about 1 to about 6 carbon atoms; R.sub.2 can be selected from the group consisting of lower alkoxy having from about 1 to about 3 carbon atoms, and X is oxygen or sulfur; are disclosed as suitable for use as suitable for use as herbicide antidotes, when used in conjunction with thiolcarbamate herbicides.Type: GrantFiled: March 22, 1982Date of Patent: August 23, 1983Assignee: Stauffer Chemical CompanyInventor: Hsiao-Ling M. Chin
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Patent number: 4390549Abstract: N-tetrachloroethylthio benzoyl anilide compounds having the formula ##STR1## in which R is chlorine, hydrogen, or trifluoromethyl and X is hydrogen or fluorine, useful as acaricides and to control mosquitoes.Type: GrantFiled: June 25, 1981Date of Patent: June 28, 1983Assignee: Stauffer Chemical CompanyInventor: Hsiao-Ling M. Chin
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Patent number: 4357346Abstract: N-haloalkyl thiobenzanilide compounds having the formula ##STR1## in which R is hydrogen, C.sub.1 -C.sub.5 alkyl, preferably C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 haloalkyl, preferably --CF.sub.3, halogen including --F, --Cl, --Br, and --I, --NO.sub.2, C.sub.1 -C.sub.2 alkoxy and X and Y are either --C1 or --F but not identical and their use as fungicides.Type: GrantFiled: January 8, 1981Date of Patent: November 2, 1982Assignee: Stauffer Chemical CompanyInventors: Hsiao-Ling M. Chin, Ferenc M. Pallos
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Patent number: 4315030Abstract: N-haloalkyl thiobenzcyanoanilide compounds having the formula ##STR1## in which R is hydrogen, C.sub.1 -C.sub.5 alkyl, preferably C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 haloalkyl, preferably --CF.sub.3, halogen including --F, --Cl, --Br, and --I, --NO.sub.2, C.sub.1 -C.sub.2 alkoxy and their use as fungicides.Type: GrantFiled: January 8, 1981Date of Patent: February 9, 1982Assignee: Stauffer Chemical CompanyInventors: Hsiao-Ling M. Chin, Ferenc M. Pallos