Patents by Inventor Hoi Kiong Lai

Hoi Kiong 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: 7045512
    Abstract: A fungicidally active compound of the formula: a) wherein Q is —NY—NH—, —N?N—, or X is oxygen, sulfur, sulfoxide, or sulfone; n is 0 or 1; Y is hydrogen, C1–C4 alkanoyl, C1–C4 haloalkanoyl, C1–C6 straight chain or branched alkoxycarbonyl, C1–C4 alkoxy(C1–C4)alkoxycarbonyl, C1–C4 alkyl, or C1–C4 haloalkyl; R1 is C1–C6 alkoxy, C3–C6 branched alkoxy, C3–C6 cycloalkoxy, phenoxy, benzyloxy, C2–C6 alkenyloxy, C2–C6 alkynyloxy, C1–C6 haloalkoxy, silyloxy, (C1–C6 alkoxy)-carbonylmethoxy, C1–C6 thioalkoxy, C1–C6 alkylamino, C1–C6 alkyl, C3–C6 branched alkyl, (C1–C6 alkoxy) C1–C6 alkoxy, or (C1–C6 alkoxy)carbonyl; R2 and R3 are each, independently, hydrogen, halogen, C1–C6 alkyl, C3–C6 branched alkyl, C1–C6 haloalkyl, C1–C6 alkoxy, C1–C6 haloalkoxy, cyano, or (C1–C6 alkoxy)carbonyl; R4 is C1–C6 alkyl; and Z1 and Z2 are each independently, carbon or nitrogen, with the proviso that when Z1 is carbon, X is oxygen, and R2 is hydrogen, then R3 cannot be hydrogen; b) wherein R5 is C1–C6 alkoxy; and R6 and
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: May 16, 2006
    Assignees: Uniroyal Chemical Company, Inc., Crompton Co./Ciie
    Inventors: Gaik-Lean Chee, Mark A. Dekeyser, Kenneth W. Seebold, Jr., Ewa Maria Osika, Walter G. Brouwer, Sheldon B. Park, Hoi Kiong Lai
  • Publication number: 20040266738
    Abstract: A fungicidally active compound of the formula:
    Type: Application
    Filed: May 27, 2004
    Publication date: December 30, 2004
    Inventors: Gaik-Lean Chee, Mark A. Dekeyser, Kenneth W. Seebold, Ewa Maria Osika, Walter G. Brouwer, Sheldon B. Park, Hoi Kiong Lai
  • Patent number: 6063781
    Abstract: Pesticidal phenylpyridazinone derivatives of the formula ##STR1## wherein n is 2, 4, 6, or 8, and R is hydrogen or one or more groups selected from halogen, nitro, C.sub.1 -C.sub.4 haloalkyl, amino, carboxyl, carboxylate, sulfonate, and cyano,and pesticidal compositions thereof.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: May 16, 2000
    Inventors: Hoi Kiong Lai, Paul Thomas McDonald
  • Patent number: 5945436
    Abstract: Compounds of of the formula ##STR1## wherein R is a C.sub.6 -C.sub.10 aryl group, optionally substituted with one or more halogen atoms, phenoxy, or, linear or branched, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 haloalkoxy, or C.sub.1 -C.sub.6 haloalkyl; R.sup.1 is C.sub.3 -C.sub.6 cycloalkyl or, linear or branched, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.6 haloalkenyl, C.sub.2 -C.sub.8 alkoxyalkyl or C.sub.1 -C.sub.6 haloalkyl; n is 1, 2 or 3; and R.sup.2 is CN, C(O)NH.sub.2 or C(S)NH.sub.2, or the physiologically acceptable salts thereof with organic and inorganic acids. These compounds are useful as fungicides.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: August 31, 1999
    Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Co./Cie.
    Inventors: Hoi Kiong Lai, Douglas Irving Relyea, Robert Allan Davis
  • Patent number: 4950671
    Abstract: A heterocyclic compound having the structural formula ##STR1## where R is C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.6 cycloalkyl, trifluoromethyl, phenyl, substituted phenyl, phenoxy, substituted phenoxy, benzyl or substituted benzyl; and R.sup.1 is at least a partially saturated monocyclic or bicyclic heterocycle of nitrogen which may be substituted with lower alkyl and physiologically acceptable salts thereof is disclosed. A process for forming this compound which involves the reaction of an amine of the formula HR.sup.1 where R.sup.1 has the meanings given above with a substituted 2-propenyl halide having the structural formula ##STR2## where R has the meanings given above; and X is a halogen atom is described. The invention embodies the above-mentioned novel 2-propenyl halide utilized as an intermediate in the formation of the heterocyclic compound of this invention.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: August 21, 1990
    Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd/Ltee
    Inventors: Hoi Kiong Lai, Robert A. Davis