...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7354971 | Aqueous dispersions The invention concerns hydrous compositions based on polychloroprene and hydroxylamine derivatives, processes for their production and their use as adhesives. The polychloroprene dispersions are stabilized by the addition of hydroxyalkylamine after removal of residu... | 04/08/2008 |
| 6797673 | Lecithin-containing drift reduction composition for use in spraying agricultural acreage Spray of discharge drift is controlled in aqueous mixtures with the inclusion of a substantially neutral pH drift control agent containing lecithin, a viscosity modifying agent, and a water dispersing agent. In one embodiment, the viscosity modifying agent is a meth... | 09/28/2004 |
| 6762151 | Methods of and compositions for plant defoliation A method of defoliating plants includes applying to plants an effective amount of a first active ingredient selected from the group consisting of substituted nitroguanidine and cyanoguanidine compounds of the formula: wh... | 07/13/2004 |
| 5770188 | Glucoxide derivatives for enzyme modification, lipid-coated enzymes, method of producing such enzymes and antifouling paint composition This invention is related to glucoxide derivatives for enzyme modification of the following general formula (1), to provide a lipid-coated enzyme showing high activity in organic solvents; antifouling paint compositions containing a lipid-coated enzyme be... | 06/23/1998 |
| 5541149 | Compositions comprising a phosphonic compound, and a sulfuric acid-amide adduct and methods for controlling vegetation using such compositions A composition exhibiting increased defoliation and growth inhibition efficacy comprises the mixture of an amide-sulfuric acid adduct and a phosphonic acid and/or phosphonic acid derivative or salt.... | 07/30/1996 |
| 5085689 | Cyclohexenone compounds and their use as herbicides or plant growth regulators Cyclohexenone compounds of the formula I ##STR1## where the substituents have the following meanings: R1 substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or benzyl; A oxygen N--OR2, NR3 ; R2 | 02/04/1992 |
| 5079384 | Herbicidal (6-(hetero)aryloxy-naphthalen-2-yl-oxy-alkanecarboxylic acid derivatives Herbicidal (6-(hetero(aryloxy-naphthalen-2-yl-oxy)-alkanecarboxylic acid derivatives of the formula ##STR1## in which R1 stands for hydrogen, halogen, cyano or trifluoromethyl, R2 stands for hydrogen or halogen, R3 stands ... | 01/07/1992 |
| 5068394 | Herbicidal (hetero)aryloxynaphthalene derivatives and intermediates therefor Herbicidal (hetero)aryloxynaphthalene derivatives of the formula ##STR1## in which X is N or --C--R5, R1, R2, R4 and R5 are hydrogen or halogen or R1 may be cyano or trifluoromethyl, R... | 11/26/1991 |
| 5041609 | Herbicidal (7-(hetero) aryloxynaphthalen-2-yl-oxy)-alkane-carboxylic Herbicidal compounds of the formula ##STR1## in which R1 stands for halogen, cyano or trifluoromethyl, R2 stands for hydrogen or halogen, R3 stands for halogen, trifluoromethyl, trifluoromethoxy, trifluoromethylthio or tri... | 08/20/1991 |
| 5041612 | 1-methylamino-cyclopropane-1-carboxylic acid derivatives New 1-methylamino-cyclopropane-1-carboxylic acid derivatives, processes for their preparation and their use as plant growth regulators are disclosed and claimed.... | 08/20/1991 |
| 5009702 | Cyclohexenone compounds and use as herbicides or as plant growth regulators Cyclohexenone compounds of the formula I ##STR1## wherein R1, R2, A and X have the meanings given in the disclosure and claims, their preparation and their use as growth-regulating agents or herbicides.... | 04/23/1991 |
| 4999041 | Use of diphenyl ether derivatives for the desiccation and abscission of plant organs The use of diphenyl ether derivatives of the general formula I ##STR1## where A is a radical ##STR2## where R1 is hydrogen, an alkali metal or alkaline earth metal ion, substituted or unsubstituted ammonium, alkyl of from 1 to 4 carbo... | 03/12/1991 |
| 4966620 | Methods for facilitating the harvest of food crops Methods are provided for facilitating the harvest of food crops by applying to the crop foliage an amount of an aqueous solution containing a combination of urea and sulfuric acid in which the urea/H2 SO4 molar ratio is within the ra... | 10/30/1990 |
| 4952235 | (Hetero)aryloxynaphthalenes having substituents bonded via sulphur (Hetero) aryloxynaphthalenes having substituents bonded via sulphur having herbicidal activity and of the formula ##STR1## in which m represents the number 0, 1 or 2, n represents the numbers 0 or 1, R1 represents hydrogen, halogen, cyano or tr... | 08/28/1990 |
| 4950323 | Herbicidal bis-formyl-N-aryl-N'-alkyl ureas and methods of use Herbicidal bis-formyl-N-aryl-N'-alkyl ureas having the formula ##STR1## in which X and Y are the same or different and are selected from the group consisting of trifluoromethyl, chloro, bromo, fluoro, hydrogen, cyano, alkyl, thioalkyl, halothioalkyl,... | 08/21/1990 |
| 4944796 | Certain 2-(disubstituted amino) acetanilide herbicides 2-(Disubstituted amino)acetamides of the formula ##STR1## wherein R is alkyl or phenyl; R1 is selected from the group consisting of amino, alkyl, allyl, substituted carbonyl wherein said substituent is haloalkyl, alkoxycarbonyl, alkylthio,... | 07/31/1990 |
| 4936899 | Abscission of parts of plants Agents for the abscission of parts of plants contain one or more urea derivatives of the general formula I ##STR1## where A is ##STR2## B is cyclopentyl, cyclohexyl or phenyl which is unsubstituted or substituted by one, two or three chlori... | 06/26/1990 |
| 4913728 | Substituted-4-alkylthioalkane-sulfonanilides and operatives Alkane- and monohaloalkane-sulfonanilides substituted in the para position by alkylthio, alkylsulfinyl and alkylsulfonyl groups and additionally substituted by halogen and optionally by trifluoromethyl and agriculturally acceptable salts thereof are usefu... | 04/03/1990 |
| 4854961 | Substituted 2-phenylimino-oxazolidine compounds having herbicidal activity The invention relates to a herbicidally and/or algicidally active compound of the general formula ##STR1## wherein R1 is a substituted or non-substituted alkyl group having 1-6 carbon atoms, or an alkenyl or alkynyl group having 2-6 carbon... | 08/08/1989 |
| 4781752 | Haloacetamidines compositions and the herbicidal use thereof Dichloroacetamidines having the formula ##STR1## in which A and B are independently selected from hydrogen, fluorine, chlorine, bromine and methyl, provided that at least one of A or B is other than hydrogen; M is hydrogen or methyl; X is selected fr... | 11/01/1988 |
| 4642338 | Fluorophenoxyphenoxypropionates and derivatives thereof Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.... | 02/10/1987 |
| 4639268 | Nitro- and cyanoguanidines as selective preemergence herbicides and plant defoliants There are provided novel nitroguanidine and cyanoguanidine compounds. A method of dessicating and defoliating plants by applying to the foliage thereof certain nitroguanidine or cyanoguanidine compounds and a method for the selective preemergence control ... | 01/27/1987 |
| 4613356 | Aryloxyphenoxy propionylthioureas which are useful as herbicides Substituted aryloxyphenoxy propionyl thiourea compounds useful as herbicides, and their methods of use, a representative one of which has the structural formula ##STR1## The method comprises applying the above referenced compound to the locus wh... | 09/23/1986 |
| 4599448 | Novel N-(1-alkenyl)-chloroacetanilides as herbicides and plant growth regulators N-(Alkenyl)-chloroacetanilides of the formula ##STR1## in which R1 represents a hydrogen atom or an alkyl group, R2 represents a hydrogen atom or an alkyl, alkoxy, alkoxyalkyl, hydroxyalkyl or benzyl group, R3 represents a... | 07/08/1986 |
| 4588433 | Phenoxymethane derivatives for regulating plant growth Phenoxymethane derivatives of the formula ##STR1## in which R1 represents hydrogen, alkyl, alkoxy, halogenoalkyl, halogenoalkoxy, halogen, alkoxycarbonyl, cycloalkoxycarbonyl or nitro, R2 represents hydrogen, alkyl or halogen, R... | 05/13/1986 |
| 4572734 | Plant growth-regulating agents A process for regulating the growth of plants is described by applying to the plants or their habitat a plant growth regulatingly effective amount of a 3,5-dichloro-2-hydroxy-benzenesulphonamide of the formula ##STR1## The compound is especially usef... | 02/25/1986 |
| 4537620 | Aryloxyphenoxy proponyl isothioureas and use as herbicides Substituted aryloxyphenoxy acylisothioureas useful as herbicides having the formula ##STR1## wherein R is CF3 or halogen; X is hydrogen or halogen; A is CH or nitrogen; R1 is hydrogen, lower alkyl, alkenyl, alkynyl, phenyl, ... | 08/27/1985 |
| 4519834 | Herbicidal ethynyl-phenylureas The ethynyl-phenylureas of the formula I ##STR1## wherein X is hydrogen, halogen, lower alkyl, lower alkoxy, haloalkyl or nitro, Y is oxygen or sulfur, R1 is hydrogen, alkyl, alkoxy, alkenyl, phenyl or benzyl, R2 is hydrogen, al... | 05/28/1985 |
| 4460399 | Diphenoxy ether formamide plant-growth regulator N-(2-[4-(4-trifluoromethylphenoxy)-phenoxy]propyl)-N-methylformamide. The base compound is prepared via formylation of the corresponding amine intermediate. The compounds are useful as fungicides, herbicides and plant-growth regulators and especially as c... | 07/17/1984 |
| 4441918 | Ethylene inhibition in plants The use of oxamide, oxamic acid and various derivatives thereof as growth regulators is disclosed. A number of physiological effects on plants and plant tissues are set forth, and many practical uses of the invention in the agricultural field are mentione... | 04/10/1984 |
| 4435208 | Herbicidally active substituted phenoxycinnamic acid derivatives Herbicidally active compounds of the formula ##STR1## in which R1 represents a hydrogen or chlorine atom, R2 represents a hydrogen atom, a cyano group, an optionally substituted radical selected from alkyl, aryl, alkanoyl, benzoyl, ... | 03/06/1984 |
| 4380464 | N,N-Diacylaminoperfluoroalkanesulfonanilides and derivatives thereof Disclosure is made of certain optionally substituted N,N-diacylaminoperfluoroalkanesulfonanilides and agriculturally acceptable salts thereof which are useful as herbicides and plant growth regulators.... | 04/19/1983 |
| 4376646 | Herbicidal N-[4-(3'-alkoxyphenoxy)-phenyl]-N'-methylureas Novel ureas of the formula I have herbicidal activity and are suitable in small applied amounts for selectively combating weeds in cultivated crops of soya-bean, maize and cereals. They are advantgeously produced by the isocyanate method and correspond to... | 03/15/1983 |
| 4334909 | N-(Alkoxymethyl)-2'-nitro-6'-substituted-2-haloacetanilides and their use as herbicides and plant growth regulants N-(Alkoxymethyl)-2'-nitro-6'-substituted-2-haloacetanilide compounds have been found to be useful as herbicides and plant growth regulants. The compounds have the formula ##STR1## where X is chloro, bromo or iodo; R is C1-5 alkyl, C3-... | 06/15/1982 |
| 4282031 | Substituted thiosemicarbazides, their manufacture and use as plant growth regulants The present invention is directed to a class of novel 1-benzoyl-3-thiosemicarbazides which are useful as plant growth regulants. The present invention is also directed to methods and formulations for plant growth regulation.... | 08/04/1981 |
| 4245125 | Novel adducts Compounds of the formula I wherein A is a compound of the formula II or III ##STR1## m is a rational number between 0.1 and 4.0, and B is H2 O2, N2 H4 or NH2 OH, and R1 is an unsubstituted ... | 01/13/1981 |
| 4240823 | New plant growth regulating compositions which contain derivatives of N-acyl methionine Compounds of the formula: ##STR1## in which R1 is hydrogen, optionally halogenated alkyl, optionally halogenated cycloalkyl, optionally halogenated alkenyl, optionally halogenated aralkenyl or aryloxyalkenyl mono or bicyclic aryl (optional... | 12/23/1980 |
| 4192671 | Plant growth regulators Agents for regulating plant growth, especially for improving abscission, which contain substituted ammonium salts or substituted fatty acid amides, and a process for improving abscission with these agents.... | 03/11/1980 |
| 4141718 | Quaternary ammonioalkanecarboxylic acid anilides as plant growth influencing agents This invention comprises new compounds and a composition for influencing, in particular for inhibiting, plant growth, which contains as active compound at least one quaternary ammonioalkancarboxylic acid anilide of the formula I ##STR1## wherein... | 02/27/1979 |
| 4119433 | 3-Halo-5-(lower alkoxy) phenoxy alkyl amides Compounds having the formula ##STR1## in which X is a halogen, R1 is lower alkyl, R2 is lower alkyl, and R3 is lower alkyl, lower alkynyl, or cyano. The compounds have been found to have utility as herbicides, particu... | 10/10/1978 |