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| Number | Title | Issue Date |
| 4628136 | Dehydrogenation process for production of styrene from ethylbenzene comprising low temperature heat recovery and modification of the ethylbenzene-steam feed therewith An improved process for the production of styrene through dehydrogenation of ethylbenzene in the presence of steam at elevated temperatures, comprising (1) recovering heat of condensation normally lost during separation of the various components of the de... | 12/09/1986 |
| 4561965 | Heat and water recovery from aqueous waste streams A hot aqueous waste, containing solids, such as tailings from the hot water extraction of bitumen from tar sands, is contacted with air to increase the heat and moisture content of the air, followed by contacting the heated and moisturized air with water ... | 12/31/1985 |
| 4522157 | Convection section assembly for process heaters An improved convection section assembly for process heaters comprising a plurality of horizontally-disposed heat transfer segments disposed in vertical array and supported by means attached externally to said assembly, said segments further comprising a p... | 06/11/1985 |
| 4490153 | Process for the production of gasohol Low energy process for the production of gasoline-ethanol blends, comprising dehydrating the aqueous ethanolic product from a conventional fermentation process, preferably containing about 6 wt. % ethanol, so as to generate an aqueous ethanolic effluent c... | 12/25/1984 |
| 4461751 | Processes for carrying out catalytic endothermic high-pressure gas reactions Processes for carrying out catalytic exothermic and endothermic high-pressure gas reactions with a single-walled pressure vessel or shell containing cross-flow (e.g., radial flow) heat transfer exchangers, a continuous catalytic bed having at least two st... | 07/24/1984 |
| 4446914 | Dry cooling tower An air cooled dry cooling tower (10) has two sets of heat exchange assemblies (14,15) whose radiator surface (16) (e.g. tubular bundles) is substantially horizontally disposed, generally in the form of two frustra of cones whose axes are on or near the ve... | 05/08/1984 |
| 4423022 | Processes for carrying out catalytic exothermic and endothermic high-pressure gas reactions Processes for carrying out catalytic exothermic and endothermic high-pressure gas reactions with a single-walled pressure vessel or shell containing cross-flow (e.g., radial flow) heat transfer exchangers, a continuous catalytic bed having at least two st... | 12/27/1983 |
| 4360405 | Process for fractionating close boiling components of a multi-component system There is disclosed a process and apparatus for the fractionation of close boiling components of a multi-component system and comprised of at least two fractionation columns having a plurality of equilibrium stages wherein the vapor from a down-stream frac... | 11/23/1982 |
| 4343691 | Heat and water recovery from aqueous waste streams A hot aqueous waste, containing solids, such as tailings from the hot water extraction of bitumen from tar sands, is contacted with air to increase the heat and moisture content of the air, followed by contacting the heated and moisturized air with water ... | 08/10/1982 |
| 4341737 | Apparatus for carrying out catalytic exothermic and endothermic high-pressure gas reactions Apparatus for carrying out catalytic exothermic and endothermic high-pressure gas reactions, comprising a single-walled pressure vessel or shell containing cross-flow (e.g., radial flow) heat transfer exchangers, a continuous catalytic bed having at least... | 07/27/1982 |
| 4319702 | Pocket creasing apparatus and method of creasing with same Improved apparatus and method for forming and maintaining a desired configuration in fabric pieces, such as a pocket during manufacture of a product comprising the fabric such as a garment, by the simultaneous application of heat and pressure (without the... | 03/16/1982 |
| 4315802 | Process and apparatus for fractionating close boiling components of a multi-component system There is disclosed a process and apparatus for the fractionation of close boiling components of a multi-component system and comprised of at least two fractionation columns having a plurality of equilibrium stages wherein the vapor from a downstream fract... | 02/16/1982 |
| 4273621 | Process for dehydrating ethanol and for the production of gasohol therefrom Process for dehydrating aqueous ethanol, utilizing a high-pressure distillation (with a single distillation column) of an aqueous ethanol admixture (preferably one derived from a conventional ethanol fermentation process), to achieve a vapor phase ethanol... | 06/16/1981 |
| 4243095 | Cooling tower A cooling tower in which the heat exchangers are arranged to form radially spaced concentric vertical cylinder walls, with air shields being positioned between the concentric cylinder walls to direct air flow through the exchangers. The air shields are up... | 01/06/1981 |
| 3997343 | Material for electrostatic recording An electrostatic recording element suitable for use as a receiving sheet in an electrostatic transfer process, consisting essentially of: a translucent, non-conductive base selected from the group consisting of paper, a polyester film, and a polyvinyl flu... | 12/14/1976 |
| 3995034 | Biocidal 3,5-dibromosalicylic acid salts Biocides which have fungicidal and bactericidal activity are metal salts of 3,5-dibromosalicylic acid of the following formula: ##SPC1## Wherein Me is a divalent metal such as copper.... | 11/30/1976 |
| 3978163 | Graft copolymers of a poly (N-vinyl lactam) containing/unsaturated ethylenic/ and dibasic carboxylic acid monoester sidechains and stable emulsions of such graft copolymers There is disclosed a graph copolymer derived from a monomer mixture comprising A. a monomer having the formula ##EQU1## wherein R2 is a substituted or unsubstituted hydrocarbon group and B. AN UNSATURATED ETHYLENIC MONOMER HAVING THE FORMU... | 08/31/1976 |
| 3970606 | N-vinyl lactam interpolymers useful as thickening agents An interpolymer useful in the thickening of aqueous acids comprising (A) about 20 to about 99.0 mole % acrylamide or N-vinyllactam, (B) about 0.5 to about 10 mole % long-chain containing vinyl monomer derivatives having the formula: ##EQU1## whe... | 07/20/1976 |
| 3954960 | Hair and similar cosmetic preparations containing a quaternized copolymer of vinyl pyrrolidone Hair and similar cosmetic preparations, i.e., aerosol hair sprays, hair conditioners, and hair setting lotions, etc. containing as the film-forming resin a quaternized copolymer of vinyl pyrrolidone and a copolymerizable vinyl monomer, i. e., a di-loweral... | 05/04/1976 |
| 3951656 | Direct-positive silver halide emulsion fogged with a cyanoborohydride anion A method for chemically fogging a silver halide photographic emulsion comprising reacting cyanoborohydride anion with the silver halide thereby forming metallic silver. The cyanoborohydride is preferably in the form of an alkali metal salt. Additionally, ... | 04/20/1976 |
| 3941718 | Insoluble crosslinked homopolymers and copolymers, polymerized on an inert substrate Crosslinked homopolymers and copolymers of N-vinyl-2-pyrrolidone formed by addition polymerization through ethylenically unsaturated groups are polymerized on solid, inert carriers. Heavy crosslinking is employed to render the polymers insoluble. The poly... | 03/02/1976 |
| 3941817 | Tertiary amide amphoteric surface active agents and process for their manufacture Improved amphoteric surface active agents are obtained from tertiary amides that have been formed by condensation of esters of fatty acids with an aminoalkyl alkanolamine, e.g., aminoethyl ethanolamine, under special conditions, by conventional carboxymet... | 03/02/1976 |
| 3933516 | Photographic element of improved antistatic and slippage properties containing calcium stearate dispersion and stearamido-propyl dimethyl-beta-hydroxy-ethyl ammonium nitrate; gelatinous composition, and method, for preparing said element A photographic element or film, such as photographic or medical X-ray film, having improved antistatic and slippage properties can be prepared by applying to said element or film a protective surface containing a calcium stearate dispersion and stearamido... | 01/20/1976 |
