Patents by Inventor Jeff K. Curtis

Jeff K. Curtis 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).

  • Certain herbicidal pyrazolopyridazines
    Patent number: 5430007
    Abstract: Novel substituted pyrazolo-rings fused to nitrogen containing heterocyclic rings having the following formula ##STR1## in which at least one of Y, Z or W is N or N-O and the remainder of Y, Z or W is C-R wherein the remainder of the variables are as defined in the specification and agriculturally effective salts thereof are herbicides.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: July 4, 1995
    Assignee: Zeneca Limited
    Inventors: William J. Michaely, Jeff K. Curtis, Christopher G. Knudsen
  • Substituted fused pyrazolo compounds
    Patent number: 5300478
    Abstract: Novel substituted pyrazolo-rings fused to nitrogen containing heterocyclic rings having the following formula ##STR1## in which at least one of Y, Z or W is N or N-O and the remainder of Y, Z or W is C-R wherein the variables are as defined in the specification; and agriculturally acceptable salts thereof.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: April 5, 1994
    Assignee: Zeneca Limited
    Inventors: William J. Michaely, Jeff K. Curtis, Christopher G. Knudsen
  • Trisubstituted benzoic acid intermediates
    Patent number: 5075497
    Abstract: Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexanediones are described.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: December 24, 1991
    Assignee: ICI Americas, Inc.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Trisubstituted benzoic acid intermediates
    Patent number: 5073642
    Abstract: Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexanediones are described.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: December 17, 1991
    Assignee: ICI Americas Inc.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Trisubstituted benzoic acid intermediates
    Patent number: 5068423
    Abstract: Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexanediones are described.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: November 26, 1991
    Assignee: ICI Americas Inc.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Trisubstituted benzoic acid intermediates
    Patent number: 5047572
    Abstract: Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexanediones are described.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: September 10, 1991
    Assignee: ICI Americas Inc.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Trisubstituted benzoic acid intermediates
    Patent number: 5001256
    Abstract: Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexanediones are described.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: March 19, 1991
    Assignee: ICI Americas Inc.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Certain 3-benzoyl-4-oxolactams
    Patent number: 4871856
    Abstract: Compounds having the formula ##STR1## wherein 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; or R.sup.1 and R.sup.2 together are alkylene having 2-5 carbon atoms; 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; or R.sup.3 and R.sup.4 together are carbonyl; and R.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.m --wherein m 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.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: October 3, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Jeff K. Curtis
  • Certain 3-benzoyl-4-oxolactams
    Patent number: 4871857
    Abstract: Compounds having the formula ##STR1## wherein 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; or R.sup.1 and R.sup.2 together are alkylene having 2-5 carbon atoms; R.sup.3 is hydrogen or C.sub.1 -C.sub.4 aklyl; R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.3 and R.sup.4 together are carbonyl; and R.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.m -- wherein m 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.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: October 3, 1989
    Assignee: Stuaffer Chemical Company
    Inventor: Jeff K. Curtis
  • Certain 3-benzoyl-4-oxolactams
    Patent number: 4808720
    Abstract: Compounds having the formula ##STR1## wherein 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; or R.sup.1 and R.sup.2 together are alkylene having 2-5 carbon atoms; 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; or R.sup.3 and R.sup.4 together are carbonyl; and R.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) trifluoromethyoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.m -- wherein m 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.sup.c and R.sup.d independently are hydrogen or C.sub.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: February 28, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Jeff K. Curtis
  • Certain substituted 4-benzoyl-3,5-dioxotetrahydropyrans and thiopyrans
    Patent number: 4786309
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;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.m -- wherein m 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; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;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 are alkylene having 2 to 5 carbon atoms;R.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.c R.sup.d wherein R.sup.c and R.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: November 22, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Charles G. Carter, Jeff K. Curtis
  • Intermediates for substituted 4-benzoyl-3,5-dioxotetrahydropyrans and thiopyrans
    Patent number: 4777272
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;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.m - wherein m 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; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;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 are alkylene having 2 to 5 carbon atoms;R.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.c R.sup.d wherein R.sup.c and R.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: October 11, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Charles G. Carter, Jeff K. Curtis
  • Substituted 4-benzoyl-3,5-dioxotetrahydropyrans and thiopyrans useful as herbicides
    Patent number: 4728745
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;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.m -- wherein m 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; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;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 are alkylene having 2 to 5 carbon atoms;R.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.c R.sup.d wherein R.sup.c and R.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: March 1, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Charles G. Carter, Jeff K. Curtis
  • Arylacryl aliphatic amide herbicidal compounds and methods of use
    Patent number: 4586954
    Abstract: A compound having the structural formula ##STR1## wherein R is C.sub.1 -C.sub.8 aliphatic and cycloaliphatic, C.sub.2 -C.sub.3 haloaliphatic, C.sub.2 -C.sub.4 alkoxyalkyl, --CH.sub.2 CN, --CH(CH.sub.3)CN or --C(CH.sub.3).sub.2 CN;R.sub.1 is hydrogen or C.sub.1 -C.sub.3 alkyl, provided that R and R.sub.1 cannot both equal hydrogen at the same time; orR and R.sub.1 taken together form a C.sub.4 -C.sub.6 alkyl or heteroalkyl ring which may be lower alkyl substituted wherein the hetero atom is oxygen or nitrogen, and the herbicidal use of the compound.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: May 6, 1986
    Assignee: Stauffer Chemical Co.
    Inventors: William J. Michaely, Jeff K. Curtis
  • Arylacrylaryl amides herbicidal compounds and methods of use
    Patent number: 4565570
    Abstract: A compound having the structural formula ##STR1## wherein R is halogen, including fluorine, chlorine, bromine and iodine, preferably chlorine, methyl, ethyl, ethenyl, ethinyl, carboxaldehyde, methoxy, nitro, trifluoromethyl or cyano, --S(O).sub.n CH.sub.3, wherein n is 0, 1 or 2; --NH.sub.2, --NHCH.sub.3, --N(CH.sub.3).sub.2, or --SO.sub.2 NH.sub.2 ; provided that when R is hydrogen, W must be hydrogen and that when R is chlorine, W cannot be 4- or 6-chlorine; R.sub.1 is hydrogen, C.sub.1 -C.sub.3 alkyl or allyl; W is halogen, including fluorine, chlorine, bromine and iodine; trifluoromethyl, methyl, C.sub.1 -C.sub.3 thioalkyl, --NHC(O)CH.sub.3, or methoxy, provided that methoxy cannot be located in the 4-position on the ring; and X is in either the 2- or 3-position and can be halogen, including fluorine, chlorine, bromine, and iodine; thiomethyl, methyl or hydrogen.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: January 21, 1986
    Assignee: Stauffer Chemical Company
    Inventors: Jeff K. Curtis, William J. Michaely