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| Number | Title | Issue Date |
| 4978384 | Substituted 2, 6-substituted pyridine compounds There are disclosed novel 2,6-substituted-3,5-pyridinedicarboxylic acids, esters, salts, amides, halides, and cyano compounds useful as herbicides, and as intermediates which provide herbicides.... | 12/18/1990 |
| 4936905 | Substituted 2,6-substituted pyridine compounds having herbicidal activity Disclosed herein are substituted pyridine-3-monocarboxylate compounds in which a substituent is bonded to the pyridine ring at the 5-position through an oxygen atom.... | 06/26/1990 |
| 4921530 | Certain 3,5-pyridine dicarboxylates, their thio analogues having herbicidal activity Disclosed herein are 3,5-pyridinedicarboxylic acid derivatives having substituted thio, sulfinyl or sulfonyl substitution at the 4 position which are useful as herbicides and herbicide precursors.... | 05/01/1990 |
| 4908057 | Substituted 2,6-substituted 1,2- or 1,6-dihydro pyridine compounds Disclosed herein are dihydropyridine dicarboxylic acid amide derivatives which are useful as herbicides, and herbicidal compositions and methods using same.... | 03/13/1990 |
| 4885026 | Certain 3-amino-5-carboxy (or thio carboxy) pyridine herbicides Disclosed are pyridine herbicides characterized by substitution with a fluorine-containing methyl group at the 2- or 6-position, a carboxylic acid-derived group at the 3-position, and a halogen or a substituted nitrogen-containing group at the 5-position.... | 12/05/1989 |
| 4835279 | 2,6-substituted pyridine compounds Disclosed herein are 3,5-pyridinedicarboxylic acid derivatives having halogen substitution at the 4 position which are useful as herbicides and herbicide precursors.... | 05/30/1989 |
| 4826532 | Substituted 2,6-substituted pyridine compounds Compounds of the formula ##STR1## are disclosed as herbicides. Disclosed herein are cyclic amides of pyridine 3,5-carboxylic acids substituted at the 2- and/or 6-position with a fluorinated methyl group. Also disclosed are herbicidal use of such ... | 05/02/1989 |
| 4826530 | 2,6-substituted pyridine compounds There are disclosed novel 2,6-substituted-3,5-pyridinedicarboxylic acids, esters, salts, amides, halides, and cyano compounds useful as herbicides, and as intermediates which provide herbicides.... | 05/02/1989 |
| 4824954 | Process for preparation of substituted pyridines Disclosed herein is a novel process for the preparation of 4-amino-3,5-pyridinedicarboxylate derivatives by (a) reaction of an acetonediester with a primary amine to form an enamine, (b) reaction with a carboxylic acid anhydride or halide to form a 2... | 04/25/1989 |
| 4797149 | 2,6-substituted pyridine compounds Disclosed herein are 3,5-pyridinedicarboxylic acid derivatives having heteroatom substitution at the 4 position which are useful as herbicides and herbicide precursors.... | 01/10/1989 |
| 4789395 | 5-sulfur substituted pyridine monocarboxylic herbicides Disclosed herein are compounds of the general formula ##STR1## which are useful as herbicides.... | 12/06/1988 |
| 4785129 | Methyl 4,4,4-trifluoro-3-oxo-butanethioate Disclosed herein is 4,4,4-trifluoro-3-oxo-butanethioate, a useful starting material in the preparation of pyridinedicarboxylate herbicides.... | 11/15/1988 |
| 4741766 | Substituted 4,6-alkoxy pyridinecarboxylate compounds and herbicidal use Disclosed herein are 4,6-dialkoxy 3-pyridinecarboxylic acids and their derivatives which are useful as herbicides and herbicide intermediates.... | 05/03/1988 |
| 4698093 | Herbicidal (2 or 6)-fluoroalkyl-4-amino pyridine derivatives Disclosed herein are 3,5-pyridinedicarboxylic acid derivatives having heteroatom substitution at the 4 position which are useful as herbicides and herbicide precursors.... | 10/06/1987 |
| 4692184 | 2,6-substituted pyridine compounds There are disclosed novel 2,6-substituted-3,5-pyridinedicarboxylic acids, esters, salts, amides, halides, and cyano compounds useful as herbicides, and as intermediates which provide herbicides.... | 09/08/1987 |
| 4655816 | Herbicidal 2-trifluoromethyl 3-pyridine carboxylic acid derivatives There are disclosed novel 2,6-substituted-3-pyridinecarboxylic acids, esters, and salts useful as herbicides, and as intermediates which provide herbicides.... | 04/07/1987 |
| 4618679 | 3,5-dicarboxylic acid esters of 2,6-bis(fluoro-alkyl)-2,6-bis(hydroxy) piperidines Compounds of the formula ##STR1## wherein x is NH and wherein R1 is selected from branched-chain lower alkyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl, and cycloalkanylalkyl radicals, R2 is a C1-4 alkyl radical and R | 10/21/1986 |
| 4609399 | Substituted 4,6-alkoxy pyridinecarboxylate compounds and herbicidal use Disclosed herein are 4,6-dialkoxy 3-pyridine carboxylic acids and their derivatives which are useful as herbicides and herbicide intermediates.... | 09/02/1986 |
| 4448399 | Benzthiazolyl-2-thioalkanoic nitriles The invention relates to compounds having the formula ##STR1## wherein R is equal to hydrogen, halogen or alkyl containing 1-5 carbon atoms; X is equal to oxygen, sulfur or --NH; n is equal to the integer 1 to 6; with the proviso when X is --NH, n ma... | 05/15/1984 |
| 4247335 | Asphalt composition resistant to weathering Paving-grade asphalt compositions having improved resistance to weathering are described which are obtained by incorporating into a paving-grade asphalt either (1) the product obtained by alkylating phenol with a resin oil, i.e., a hydrocarbon fraction of... | 01/27/1981 |
| 4183828 | Catalyst for dehydrocoupling process Toluene and toluene derivatives are oxidatively dehydrocoupled to produce stilbene and stilbene derivatives by heating toluene or a toluene derivative in the vapor phase with a metal- and oxygen-containing composition which functions as an oxidant or oxyg... | 01/15/1980 |
| 4162992 | Oxidation and ammoxidation catalysts Oxidation and ammoxidation catalysts are disclosed which have the empirical formula Sba Vb Tic Ox, wherein a is at least 6, b is 1, and c is a number such that the ratio c/a is at least 0.5, and x is a number ta... | 07/31/1979 |
| 4154969 | Production of dihydroxydiphenyl alkanes A combination of zinc oxide and zinc bromide employed as a catalyst for the reaction between phenol and a 1,2-dihaloethane wherein the halogen is chlorine, bromine or iodine provides for increased reaction rates as compared to the use of either zinc compo... | 05/15/1979 |
| 4108210 | Control valve trim assembly Described herein are fluid flow control valve trims suitable for use in a valve in which high fluid pressure drops are to be sustained without excessive noise generation or cavitation damage to valve members. The valve trim is constructed of two or more a... | 08/22/1978 |
| 4041973 | Quick change valve trim assembly Disclosed herein is a valve trim assembly wherein a valve cage member and a valve plug are provided which cannot be independently rotated. A valve stem is affixed to the plug and extends out of the cage. The cage and the stem are threaded for attachment t... | 08/16/1977 |
| 4005848 | Bidirectional pressure-assisted valve seal Disclosed herein are valve seals wherein an annular seal member is retained in an annular recess in a valve body wall, the seal member being axially flexible. A resilient annular garter spring is provided between the seal member and a converging surface o... | 02/01/1977 |
| 4004601 | Quick closing emergency valve A valve mechanism is disclosed comprising valve body means with a fluid flow passage communicating an inlet and an outlet. A valve for controlling the flow of fluid through the fluid flow passage is connected to a stem which extends outwardly from the val... | 01/25/1977 |
| 3991903 | Quick-disconnect valve closure structure Described herein is a structure for attachment of two parts of a valve structure in a pressure-tight leakproof relationship, which employs a minimum number of parts and may be quickly disassembled, but which is nonetheless strong, rugged, and durable. Thi... | 11/16/1976 |
| 3960364 | High pressure tight shutoff valve seal A tight shutoff valve seal is disclosed, wherein an easily deformable annular valve seal member is retained within an annular groove in a valve element. Protecting this seal member from erosion or damage by a fluid flowing therepast is a slidable seal ret... | 06/01/1976 |
| 3951168 | Curtain valve Described herein are fluid flow control valves of the type wherein a perforated orifice member is interposed between the valve inlet and outlet, and a flexible membrane is provided which selectively covers and uncovers the perforations in the orifice memb... | 04/20/1976 |
