Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
PatentStorm News
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 |
| 7405865 | Liquid for electrophoretic display, display medium and display device using the same A medium for electrophoretic display using a liquid for electrophoretic display which can reversibly change a visible state by action of an electric field includes a medium comprising each independent structures of microcapsules or cells filled with a liquid for ele... | 07/29/2008 |
| 7277218 | Electrophoretic compositions This invention relates to a novel electrophoretic composition having improved colloidal stability, switching performance and temperature latitude. ... | 10/02/2007 |
| 6790386 | Dielectric fluid A dielectric fluid comprises an isoparaffinic base oil and hydrogen donor compound. The base oil may be a hydroisomerized isoparaffinic oil, and the hydrogen donor may be a substituted, or partially saturated aromatic compound. The resulting dielectric fluid exhibit... | 09/14/2004 |
| 6446402 | Thermochromic devices The invention is an energy efficient, thermochromic device that may be used to allow sunlight or solar radiation into a building or structure when the ambient temperature is low and substantially blocks solar radiation when the ambient temperature is high... | 09/10/2002 |
| 6391228 | Dielectric composition having an improved gas absorption The invention relates to a dielectric composition having improved gas absorption for electrical devices which comprises from 99% to 70% by weight of a mineral oil and from 1% to 30% by weight of at least one polyarylalkane composition.... | 05/21/2002 |
| 5601755 | Dielectrics comprising methyl/benzyl derivatives of diphenylmethane Novel dielectric liquids for such electrical components as transformers, capacitors and cables, especially adopted for low temperature applications, comprise immixtures of benzyltoluene, (methylbenzyl)toluene, benzylxylene and (methylbenzyl)xylene, and op... | 02/11/1997 |
| 5545355 | Dielectric compositions comprising benzyltoluene/(Methylbenzyl) xylene isomers Novel dielectric liquids for such electrical components as transformers, capacitors and cables, especially adopted for low temperature applications, comprise a mixture of benzyltoluene and (methylbenzyl)xylene isomers, notably a mixture of benzyltoluene/d... | 08/13/1996 |
| 5424469 | Process for preparing polyglycerol fatty acid ester mixtures and use in cosmetic, pharmeceutical and chemical preparations A process for preparing polyglycerol fatty acid ester mixtures in which a polyglycerol mixture of 0.1 to 20 wt % monoglycerol, 20 to 35 wt % diglycerol, 30 to 40 wt % triglycerol and 49.9 to 5 wt % tetra- and higher polyglycerols is reacted with one or mo... | 06/13/1995 |
| 5186864 | Synthesis of dielectric liquids by improved Friedel-Crafts condensation Dielectric liquids are prepared by (a) Friedel-Crafts condensing at least one aromatic halide with at least one aromatic compound in the presence of a catalytically effective amount of ferric chloride, and thereafter deliberately avoiding any downstream d... | 02/16/1993 |
| 5106522 | Fluid compositions An electro-rheological fluid which comprises a solid particulate substance contained in a hydrophobic vehicle which is liquid at atmospheric pressure at least at temperatures below 50° C. and which comprises a compound of the formula: (X)n --A... | 04/21/1992 |
| 5019175 | Method for the destruction of halogenated organic compounds in a contaminated medium A method for the destruction of halogenated organic compounds contained in a contaminated medium comprises adding an aqueous solution of polyethylene glycol to the contaminated medium in an amount to provide from about 0.1 to about 20 weight percent of po... | 05/28/1991 |
| 5014033 | Dielectric liquid compositions containing hydroxybenzaldehyde Novel dielectrically improved liquid compositions include at least one electrical insulating oil (A), e.g., benzyltoluene or oligomers thereof, and at least one aldehyde (B) containing at least six carbon atoms, or a functionally substituted such aldehyde... | 05/07/1991 |
| 4687589 | Electronheological fluids An electrorheological fluid which comprises a liquid continuous phase and, dispersed therein, at least one dispersed phase and which is capable of functioning as such when at least the dispersed phase is substantially anhydrous.... | 08/18/1987 |
| 4602994 | Removal of PCBs and other halogenated organic compounds from organic fluids Organic functional fluids containing halogenated organic compounds present as contaminants therein are treated in an inert atmosphere with a NaPEG decomposition reagent which is prepared in an inert atmosphere, thereby to produce a functional fluid phase ... | 07/29/1986 |
| 4570043 | Dielectric fluids and apparatus incorporating such fluids Dielectric, cooling or arc-extinguishing fluids comprise a mixture of tetrachlorodifluoroethane and perchloroethylene, optionally with incorporation of a third component which is preferably trichlorotrifluoroethane. Transformer and circuit-interrupter app... | 02/11/1986 |
| 4502973 | Electroviscous fluids Electroviscous (EV) fluids consisting of solid hydrophilic particles dispersed in hydrophobic liquids, where the liquid contains a diaryl derivative component of general formula I ##STR1## in which R is CY2,O,S,SO,SO2,SiF2 | 03/05/1985 |
| 4483788 | Electric field responsive fluids An electroviscous (EV) fluid composition whose fluid properties are altered in the presence of an electric field comprises water-containing particles of a phenol-formaldehyde polymer dispersed in a non-conducting liquid. The composition, selected from the... | 11/20/1984 |
| 4451674 | Substituted benzene derivatives having at least one benzene ring substituted by 3,3,3-trifluoropropyl group and process for their production A novel trifluoropropyl derivative of mono-substituted benzene represented by the general formula: ##STR1## wherein R is halogen atom, trifluoromethyl, n-octyl, n-dodecyl, or phenoxy group not substituted or mono-substituted by 3,3,3-trifluoropropyl ... | 05/29/1984 |
| 4438027 | Chlorinated alkylaromatic based compounds and new liquid dielectrics New compounds of the formula: ##STR1## where n, x, y and z have value 1 or 2, their process of preparation and their use as dielectrics such as insulating fluids for transformers alone or in mixture with one or more products of general formula: ... | 03/20/1984 |
| 4419198 | Purification of methioine hydroxy analogue hydrolyzate by electrodialysis A process for separating anions, such as sulfates, chlorides and phosphates, and cations, such as ammonium and hydrogen ion, from methionine hydroxy analogue hydrolysate in solution by passing a direct electric current through an electrodialysis cell, sai... | 12/06/1983 |
| 4417977 | Removal of PCBS and other halogenated organic compounds from organic fluids Organic functional fluids containing halogenated organic compounds present as contaminants therein are treated with a NaPEG decomposition reagent in an inert atmosphere to produce a functional fluid phase substantially free of the halogenated organic comp... | 11/29/1983 |
| 4401871 | Halogenated hydrocarbon compositions and electrical apparatus containing such compositions A liquid halogenated hydrogenated hydrocarbon composition suitable for use as a dielectric and/or arc-extinguishing fluid in electrical apparatus, which comprises (a) a major proportion by weight of one or more halogenated paraffinic hydrocarbons having a... | 08/30/1983 |
| 4396785 | 3,3,3-Trifluoropropyl derivatives of naphthalene or methylnaphthalene and process for preparing the same Novel 3,3,3-trifluoropropyl derivatives of naphthalene or methylnaphthalene of the general formula ##STR1## wherein R1 and R2 respectively represent hydrogen atom or methyl group, with the proviso that R1 and R2 | 08/02/1983 |
| 4388669 | Polyglycol dielectric capacitor fluid Polypropylene glycol dielectric fluids are used to impregnate electrical capacitors and particularly metallized capacitors for improved performance.... | 06/14/1983 |
| 4381535 | Dielectric fluid A dielectric fluid for a capacitor includes a mixture of phthalate ester, polychlorinated benzene and a linear alkylbenzene.... | 04/26/1983 |
| 4312794 | Ultra pure tetrachloroethylene dielectric fluid A transformer is disclosed which contains a dielectric fluid of tetrachloroethylene. The dielectric fluid is ultra pure in that it contains less than 100 ppm of chlorohydrocarbons. A diluent, such as mineral oil, may be mixed with the tetrachloroethylene.... | 01/26/1982 |
| 4260506 | Hydraulic pressure device utilizing biodegradable halogenated diphenyl methanes Biodegradable functional fluids useful as dielectric fluids, heat transfer fluids, hydraulic fluids, plasticizers or dye solvents comprise at least one halogenated diphenylmethane compound represented by the structure ##STR1## where each X is individ... | 04/07/1981 |
| 4225404 | Perfluoroolefin and perfluoroparaffin mixture and process for making same Straight chain perfluoroolefins compounds of medium length with terminal or double bonds and a minor proportion of trifluoromethyl side chains or mixtures of such perfluoroolefins with perfluoro paraffins of equal chain length and corresponding structure,... | 09/30/1980 |
| 4222885 | Method of producing a dielectric with perowskite structure and containing a copper oxide Method for producing a dielectric having perowskite structure comprising stoichiometric alkaline earth titanates, alkaline earth zirconates, alkaline earth stannates and mixed crystals thereof, wherein an admixture of eutectic-forming compounds which are ... | 09/16/1980 |
| 4223369 | Monolithic capacitor with low firing zirconate and nickel electrodes A monolithic ceramic capacitor having buried nickel electrodes is made by forming a paint of alkaline earth zirconates, a boron containing powder and an organic vehicle and binder. Nickel containing films are buried between dried and stacked layers of the... | 09/16/1980 |
| 4221672 | Thermal insulation containing silica aerogel and alumina A material having good thermal insulation properties can be made from an intimate mixture of a microporous silica aerogel, a ceramic fibre material and optionally an opacifier. According to the invention alumina is added to those mixtures, e.g. in the for... | 09/09/1980 |
| 4216101 | Electrical insulating composition based on polyolefin containing dye additives as voltage stabilizers A voltage stabilized solid polyolefin dielectric composition is disclosed. The dielectric composition comprises a polyolefin containing a voltage stabilizing amount of an additive selected from the class of dyes identified in the Color Index as being of t... | 08/05/1980 |
| 4212914 | Electroinsulating material The electroinsulating material of the present invention contains a fluorine rubber, low-molecular weight sticky resin, cross-linking agents, particles of a mica-containing material, and a mineral filler. This material features high corona resistance, elasticit... | 07/15/1980 |
