Patents by Inventor Hoi K. Lai
Hoi K. Lai 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).
-
Patent number: 5211736Abstract: A compound having the structural formula ##STR1##whereR is C.sub.2 -C.sub.8 alkylene having 2 to 4 carbon atoms linking X and Y;R.sup.1 is C.sub.1 -C.sub.8 linear or branched alkylene, C.sub.1 -C.sub.6 oxyalkylene, C.sub.1 -C.sub.6 thioalkylene or C.sub.1 -C.sub.6 aminoalkylene;R.sup.2 and R.sup.3 are the same or different and are hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 alkylsulfonyl, phenyl substituted phenyl, phenoxy, substituted phenoxy, cyano, nitro, --OCOR.sup.4, --COOR.sup.5, --CH.sub.m Q.sub.3-m or --OCH.sub.m Q.sub.3-m ;R.sup.4 is C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl;Q is halogen;X and Y are the same or different and are oxygen, sulfur, sulfinyl, sulfonyl or if one is NH, the other is sulfur;Z is nitrogen or CH; andm is 1, 2 or 3;and physiologically acceptable salts thereof,is disclosed. A process for synthesizing the compound of this invention is also set forth.Type: GrantFiled: February 7, 1992Date of Patent: May 18, 1993Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd/LteeInventors: Hoi K. Lai, Robert A. Davis, Allen R. Blem
-
Patent number: 5145982Abstract: This invention relates to a novel class of azoles of 5,6-dihydro-1,4-oxathiins having fungicidal activity. The class of compounds is represented by formula (I) ##STR1## wherein: R is each independently halogen; trifluoromethyl; C.sub.1 -C.sub.8 alkyl; C.sub.3 -C.sub.6 cycloalkyl; C.sub.1 -C.sub.8 alkoxy; C.sub.1 -C.sub.8 alkoxycarbonyl; amino; substituted amino; aminocarbonyl; aminosulfonyl; C.sub.1 -C.sub.8 alkoxy sulfonyl; phenyl; phenoxy; phenyl or phenoxy mono-, di- or tri-substituted independently with halogen, trifluoromethyl, C.sub.1 -C.sub.8 alkyl or C.sub.1 -C.sub.8 alkoxy; or benzyl;G is Ch or N;m is 0 1 or 2; andn is 0, 1 or 2.Fungicidal compositions, methods of controlling fungi and methods for preparing the compounds are within the scope of the invention.Type: GrantFiled: October 25, 1991Date of Patent: September 8, 1992Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd./LteeInventors: Hoi K. Lai, Robert A. Davis
-
Patent number: 5106409Abstract: A compound having the structural formula ##STR1## where R is C.sub.2 -C.sub.8 alkylene having 2 to 4 carbon atoms linking X and Y;R.sup.1 is C.sub.1 -C.sub.8 linear or branched alkylene, C.sub.1 -C.sub.6 oxyalkylene, C.sub.1 -C.sub.6 thioalkylene or C.sub.1 -C.sub.6 aminoalkylene;R.sup.2 and R.sup.3 are the same or different and are hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 alkylsulfonyl, phenyl, substituted phenyl, phenoxy, substituted phenoxy, cyano, nitro, --OCOR.sup.4, --COOR.sup.5, --CH.sub.m Q.sub.3-m or --OCH.sub.m Q.sub.3-m,R.sup.4 is C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl;Q is halogen;X and Y are the same or different and are oxygen, sulfur, sulfinyl, sulfonyl or if one is NH, the other is sulfur;Z is nitrogen or CH; andm is 1, 2 or 3;and physiologically acceptable salts thereof,is disclosed. A process for synthesizing the compound of this invention is also set forth.Type: GrantFiled: May 9, 1990Date of Patent: April 21, 1992Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd.Inventors: Hoi K. Lai, Robert A. Davis, Allen R. Blem
-
Patent number: 5081143Abstract: This invention relates to a novel class of azoles of 5,6-dihydro-1,4-oxathiins having fungicidal activity. The class of compounds is represented by formula (I) ##STR1## wherein: R is each independently halogen; trifluoromethyl; C.sub.1 -C.sub.8 alkyl; C.sub.3 -C.sub.6 cycloalkyl; C.sub.1 -C.sub.8 alkoxy; C.sub.1 -C.sub.8 alkoxycarbonyl; amino; substituted amino; aminocarbonyl; aminosulfonyl; C.sub.1 -C.sub.8 alkoxy sulfonyl; phenyl; phenoxy; phenyl or phenoxy mono-, di- or tri-substituted independently with halogen, trifluoromethyl, C.sub.1 -C.sub.8 alkyl or C.sub.1 -C.sub.8 alkoxy; or benzyl;G is CH or N;m is 0 1 or 2; andn is 0, 1 or 2.Fungicidal compositions, methods of controlling fungi and methods for preparing the compounds are within the scope of the invention.Type: GrantFiled: August 10, 1990Date of Patent: January 14, 1992Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd./LteeInventors: Hoi K. Lai, Robert A. Davis
-
Patent number: 5006153Abstract: The invention relates to compounds useful as fungicides and plant growth regulants represented by the formula ##STR1## in which: R is a substituent or a group of substituents representing halogen, low alkyl of 1 to 6 carbon atoms, phenyl, substituted phenyl, phenoxy, substituted phenoxy, naphthyl, nitro, cyano, low alkoxy, alkoxycarbonyl, or trifluoromethyl;X is single bond, oxygen, sulfur or sulfonyl;G is CH or nitrogen atom;m is an integer from 1 to 4 and a process of making the compound.Type: GrantFiled: November 29, 1989Date of Patent: April 9, 1991Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd./Ltee.Inventors: Hoi K. Lai, Robert A. Davis, Allen R. Blem
-
Patent number: 4966910Abstract: This invention relates to a novel class of azoles of 5,6-dihydro-1,4-oxathins having fungicidal activity. The class of compounds is represented by formula (I) ##STR1## wherein R is each independently halogen; trifluoromethyl; C.sub.1 -C.sub.8 alkyl; C.sub.3 -C.sub.6 cycloalkyl; C.sub.1 -C.sub.8 alkoxy; C.sub.1 -C.sub.8 alkoxycarbonyl; amino; substituted amino; aminocarbonyl; aminosulfonyl; C.sub.1 -C.sub.8 alkoxy sulfonyl; phenyl; phenoxy; phenyl or phenoxy mono-, di- or tri-substituted independently with halogen, trifluoromethyl, C.sub.1 -C.sub.8 alkyl or C.sub.1 -C.sub.8 alkoxy; or benzyl;G is CH or N;m is 0 1 or 2; andn is 0, 1 or 2.Fungicidal compositions, methods of controlling fungi and methods for preparing the compounds are within the scope of the invention.Type: GrantFiled: October 18, 1989Date of Patent: October 30, 1990Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd./LteeInventors: Hoi K. Lai, Robert A. Davis
-
Patent number: 4943311Abstract: A compound having the structural formula ##STR1## where R is C.sub.2 -C.sub.8 alkylene having 2 to 4 carbon atoms linking X and Y;R.sup.1 is C.sub.1 -C.sub.8 linear or branched alkylene, C.sub.1 -C.sub.6 oxyalkylene, C.sub.1 -C.sub.6 thioalkylene or C.sub.1 -C.sub.6 aminoalkylene;R.sup.2 and R.sup.3 are the same or different and are hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 alkylsulfonyl, phenyl, substituted phenyl, phenoxy, substituted phenoxy, cyano, nitro, --OCOR.sup.4, --COOR.sup.5, --CH.sub.m Q.sub.3-m or --OCH.sub.m Q.sub.3-m ;R.sup.4 is C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl;Q is halogen;X and Y are the same or different and are oxygen, sulfur, sulfinyl, sulfonyl or if one is NH, the other is sulfur;Z is nitrogen or CH; andm is 1, 2 or 3;and physiologically acceptable salts thereof,is disclosed. A process for synthesizing the compound of this invention is also set forth.Type: GrantFiled: May 9, 1988Date of Patent: July 24, 1990Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd/LteeInventors: Hoi K. Lai, Robert A. Davis, Allen R. Blem
-
Patent number: 4857649Abstract: The invention relates to compounds useful as fungicides and plant growth regulants represented by the formula ##STR1## in which: R is a substituent or a group of substituents representing halogen, lower alkyl of 1 to 6 carbon atoms, phenyl, substituted phenyl, phenoxy, substituted phenoxy, naphthyl, nitro, cyano, lower alkoxy, alkoxycarbonyl, or trifluoromethyl;X is single bond, oxygen, sulfur or sulfonyl;G is CH or nitrogen atom;m is an integer from 1 to 4 and a process of making the compound.Type: GrantFiled: July 21, 1988Date of Patent: August 15, 1989Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical LTD/LTEEInventors: Hoi K. Lai, Robert A. Davis, Allen R. Blem