A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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 |
| 7960580 | Process for making menthyl glutarate A process for making menthyl glutarate is disclosed. The process comprises reacting excess glutaric acid and menthol to produce a mixture comprising monomenthyl glutarate (MMG) and dimenthyl glutarate (DMG), wherein the weight ratio of glutaric acid to menthol is fr... | 06/14/2011 |
| 7563925 | Optically active ester compounds and their use in perfume compositions Optically active ester compounds of the formula: in particular, are useful fragrance materials. ... | 07/21/2009 |
| 7368051 | Process for corrosion inhibiting composition in hydrocarbon fuels The present invention provides a process for the production of a fuel composition having a NACE corrosion rating of between 0% and 25%, comprising the steps of: (i) contacting a fuel with a corrosion inhibitor of formula (I) to provide an initial fuel composition | 05/06/2008 |
| 7363978 | Methods of using reactive surfactants in subterranean operations Novel uses of reactive surfactants in treating subterranean formations and/or proppant particulates are provided. In one embodiment, the present invention provides a method comprising: providing a treatment fluid that comprises a base fluid and a reactive surfactant... | 04/29/2008 |
| 7323608 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds One aspect of the present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-sulfur bond between the sulfur atom of a t... | 01/29/2008 |
| 7288614 | Substituted cycloalkanes, and use thereof as cationic polymerization initiators Substituted 7- to 12-membered cycloalkanes which have leaving groups, in particular chlorine atoms, on tertiary ring carbons, a process for preparing them and their use as initiators for cationic polymerization, in particular the cationic polymerization of isobutene... | 10/30/2007 |
| 7271282 | Dicarboxylic diester, process for producing the same, and refrigerating machine lubricating oil comprising the ester A diester represented by the formula wherein A represents a cyclohexane ring, cyclohexene ring or benzene ring, X is H or methyl group, RX and RY are the same or different and each is C3-C18... | 09/18/2007 |
| 7115784 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or a... | 10/03/2006 |
| 7094920 | Stereoselective synthesis of 2-hydroxy-4-phenylbutyric acid esters A process is described for the stereospecific preparation of an ester of formula (I): wherein * signifies the (R) stereoisomer; R1 is selected from C1-6 alkyl, preferably ethyl; and R2 is hydrogen, a protecting group or a leaving gro... | 08/22/2006 |
| 7087558 | Process for reacting large hydrophobic molecules with small hydrophilic molecules A process for reacting relatively small hydrophilic carboxylic molecules with relatively large, hydrophobic hydrocarbon based molecules, said process comprising conducting the reacting in the presence of a sulfonic acid catalyst having solubilizing properties. In a ... | 08/08/2006 |
| 7026418 | Emulsion polymerization process utilizing ethylenically unsaturated amine salts of sulfonic, phosphoric and carboxylic acids Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monome... | 04/11/2006 |
| 6992133 | Low VOC, coating compositions having improved flexibility and impact resistance based upon nonlinear, low-molecular weight polyester polyol resins Coating compositions based on nonlinear, low molecular weight, polyester-based polyols having low viscosity and high solids content made by reacting a branched, polyhydric alcohol having at least three hydroxyl groups, such as trimethylolpropane; a glycol or diol; a... | 01/31/2006 |
| 6943073 | Process for low temperature atomic layer deposition of RH A method for the formation of rhodium films with good step coverage is disclosed. Rhodium films are formed by a low temperature atomic layer deposition technique using a first gas of rhodium group metal precursor followed by an oxygen exposure. The invention provide... | 09/13/2005 |
| 6919477 | Fruity musk compositions Novel ester compounds and the use of these esters as a fragrance chemicals, suitable for use in creating fragrance, and scents in items such as perfumes, colognes and personal care products are disclosed. ... | 07/19/2005 |
| 6825379 | Method for recovering and producing C4-C6 dicarboxylate from alkaline waste solution generated in caprolactam preparation process The present invention relates to a method for recovering and producing C4-C6 dicarboxylates from an alkaline waste solution generated in a caprolactam preparation process, in which the alkaline waste solution is treated with sulfuric acid to se... | 11/30/2004 |
| 6774260 | Fruity musk compositions Novel ester compounds and the use of these esters as a fragrance chemicals, suitable for use in creating fragrance, and scents in items such as perfumes, colognes and personal care products are disclosed. ... | 08/10/2004 |
| 6740193 | Gem-diesters and epoxidized derivatives thereof In accordance with the present invention, there are provided gem-diesters and epoxidized derivatives thereof. When cured, thermosets comprising invention gem-diesters and epoxidized derivatives thereof have thermally and/or chemically labile gem-diester groups inter... | 05/25/2004 |
| 6617046 | Thermosetting resin composition and semiconductor device using the same A thermosetting resin composition usable for sealing a gap formed between a printed circuit board and a semiconductor element in a semiconductor package having a face-down structure; a semiconductor device comprising a printed circuit board, a semiconduct... | 09/09/2003 |
| 6586609 | Process for esterification in a chromatographic reactor Process for the esterification of organic acids with alcohols in a reactor of the chromatographic type in which the heterogeneous solid phase is capable of acting both as an esterification catalyst and as a means exhibiting preferential adsorption towards... | 07/01/2003 |
| 6552226 | Tandem acyl-Claisen rearrangement in the preparation of chiral products A novel tandem acyl-Claisen rearrangement reaction is provided. An allylic reactant such as an allylic amine or an allylic thioether, having at least two functional groups that enable the reactant to undergo at least two successive Claisen rearrangement r... | 04/22/2003 |
| 6534542 | (2-hydroxy)ethyl-thioureas useful as modulators of adrenergic receptors Compounds of formula (i) and of formula (ii) ##STR1## wherein the symbols have the meaning disclosed in the specification, specifically or selectively modulate and/or adrenergic receptors in preference over ³... | 03/18/2003 |
| 6476251 | Process for preparing spirocyclic tetronic acid derivatives The present invention relates to a novel process for preparing compounds of the formula (I) ##STR1## by reacting compounds of the formula (II) ##STR2## with a base and compounds of the formula (III) ##STR3## in which X, Y, Z, n, G, A, B, R1 | 11/05/2002 |
| 6395924 | T-butylperoxy-cyclododecyl-oxalate The new compound t-butylperoxycyclododecyl oxalate is described, as well as a method of preparing it and use of the compound as a polymerization initiator.... | 05/28/2002 |
| 6350898 | Process for preparing malonic esters Malonic esters of the general formula ##STR1## where R is C1-10 -alkyl, C3-10 -alkenyl or aryl-C1-4 -alkyl, are prepared by reacting an alkali metal salt of malonic acid with a halide of the general formula R--X (II), wher... | 02/26/2002 |
| 6255523 | Power coatings based on branched oligoesters and non-emissive uretdione polyisocyanates The present invention relates to powder coating compositions which can be cured at low temperatures. The powder coating composition of the invention include a unique combination of a branched oligoester polyol and uretdione crosslinking agent which when c... | 07/03/2001 |
| 6207857 | Precursor compounds The compounds of the formula I ##STR1## are precursors for organoleptic and antimicrobial compounds. The latter are generated in the presence of skin bacteria, enzymes or acidic or alkaline conditions. One precursor molecule can provide one or more differ... | 03/27/2001 |
| 6207853 | Homogeneous asymmetric hydrogenation using phosphine ligands of transition metals A process for the preparation of an enantiomerically enriched 2-substituted succinic acid derivative of formula 2, which comprises asymmetric hydrogenation of the dehydro precursor of formula 7 or 8, or a mixture thereof ##STR1## wherein R1 | 03/27/2001 |
| 6162891 | Polyester polyols and their use in two-component polyurethane lacquers The present invention relates to polyester polyols having hydroxyl numbers of 175 to 520 which are the reaction products of a) 50 to 60 mole % of a polyol component containing (i) 0 to 39 mole % of one or more dihydric aliphatic or cycloaliphatic alcohols havi... | 12/19/2000 |
| 6136854 | Cyclopentenone derivative Cyclopentenone derivative having a structure of 5-(R1 COO--)-4-(R2 COO--)--substituted 2-cyclopenten-1-one (R1 and R2 are some or different and each is alkyl group, alkenyl group or aryl group) or an optically a... | 10/24/2000 |
| 6053955 | Polyether amino acid ester compounds, preparation method and use thereof The present invention relates to polyether amino acid ester compounds, preparation method and their use as hydrocarbon fuel additives.... | 04/25/2000 |
| 6002039 | Liquid injection molding inhibitors for curable compositions Acetylenic maleates, fumarates and related derivative compounds are new compositions of matter having the formula: R1 O2 C--CH.dbd.CH--CO2 R2 wherein R1 may be an organic moiety containing at least two carbon ... | 12/14/1999 |
| 5959139 | Process for producing optically active 2-hydroxy-4-arylbutyric acid or its ester Provided is an industrially useful process for producing an optically active 2-hydroxy-4-arylbutyric acid or its ester. An optically active acyloxysuccinic anhydride is reacted with an aromatic compound in the presence of a Lewis acid to produce an optica... | 09/28/1999 |
| 5942642 | Method for making oligomers The invention relates to a method for making oligomers, including homo-oligomers and cooligomers, by the free radical polymerization of at least one monomer component B) having a greater tendency to polymerize and 0-90 wt. %, calculated on the oligomers, ... | 08/24/1999 |
| 5939580 | Process for preparing glyoxylic esters and their hydrates Process for preparing glyoxylic esters or their hydrates in which a water-soluble salt of a maleic or fumaric monoester or a mixture thereof is reacted with ozone in aqueous solution at temperatures of from 0 to 50° C., and the corresponding glyoxylic es... | 08/17/1999 |
| 5905127 | Polymerizable mesophases based on substituted unsaturated carboxylic acids Mesogens are provided based on substituted unsaturated carboxylic acids such as acrylic and methacrylic acid. Substitution of a variety of hydrophobic tails onto the carboxylic acid or acid derivative via the vinyl carbon proximal to the carbonyl of the c... | 05/18/1999 |
| 5750750 | High viscosity complex alcohol esters A complex alcohol ester which comprises the reaction product of an add mixture of the following: a polyhydroxyl compound represented by the general formula: R(OH)n wherein R is any aliphatic or cyclo-aliphatic hydrocarbyl group and n is at leas... | 05/12/1998 |
| 5710232 | Poly(ester-amide) polyols Compounds having the formula H--A--(BA)n --OH wherein n is 1-20; A is ##STR1## B is ##STR2## R1 is alkyl having 1-6 carbon atoms; R2 is an alkylene having 1-6 carbon atoms, alkenylene having 2-6 carbon atoms, cyc... | 01/20/1998 |
| 5698722 | Functionalization of polymers based on Koch chemistry and derivatives thereof A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least ethylenic double bond per polymer chain, with carbon monoxide and a nucleophilic trapping agent. The ... | 12/16/1997 |
| 5650536 | Continuous process for production of functionalized olefins A continuous process for functionalizing olefins, especially polymer olefins in a CSTR or pipe reactor. Esters are preferably produced by continuous reaction of the olefin with carbon monoxide and a nucleophilic trapping agent. The liquid-filled pipe reac... | 07/22/1997 |
| 5608090 | GABA and L-glutamic acid analogs for antiseizure treatment A compound of the formula ##STR1## wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen,... | 03/04/1997 |