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| Number | Title | Issue Date |
| 4579175 | Method of reducing water production The disclosed invention reduces water production substantially more than hydrocarbon production in producing wells by the injection of an aqueous solution of alginates. The alginate solution or following solutions may optionally contain agents for deceler... | 04/01/1986 |
| 4396787 | Process for the thermal dimerization of butadiene Formation of undesirable popcorn polymer on the walls of a reaction vessel during thermal dimerization of butadiene is prevented by coating the walls with a falling film of aqueous sodium nitrite solution.... | 08/02/1983 |
| 4390973 | Method for determining the extent of subsurface reaction involving acoustic signals A method determines the extent of subsurface reactions in which random acoustic signals are radiated from a whole area covered by the reaction or from a boundary region, hereafter termed reaction front, between largely undisturbed rocks and those already ... | 06/28/1983 |
| 4320471 | Seismic surveying method A method is provided for obtaining wide band seismograms made from a plurality of narrow band seismic surveys using vibrator type sources. Several different narrow frequency band seismograms are obtained using vibrator type signal sources. The narrow band... | 03/16/1982 |
| 4244906 | Process for making phenol-aldehyde resins Phenol-aldehyde resins are prepared by condensing phenol with formaldehyde and isobutyraldehyde in the presence of an alkali. The resulting resins are particularly suited for manufacturing products such as fiberboard and chipboard.... | 01/13/1981 |
| 4138348 | Lubricant for use in non-chip metal forming The present invention is a water soluble, pasty lubricant containing a base material comprising a neutral fat and/or a vegetable oil, an alkali metal soap, water and an alkali metal salt of a boric acid. The lubricant has particular advantage for use in n... | 02/06/1979 |
| 4137207 | Process for the production of resins containing hydroxyl groups Synthetic resins suitable for use in the preparation of baking varnishes are prepared by copolymerizing a vinyl aromatic hydrocarbon, an ester of an alpha, beta-unsaturated monocarboxylic such as an acrylate and an alpha, beta-unsaturated, dicarboxylic ac... | 01/30/1979 |
| 4125497 | Method for manufacturing heat-cured molded articles from cement An improved method of manufacturing shaped objects from cement wherein cement is wetted with an aqueous solution of an acetone-formaldehyde resin, optionally including a water-soluble alcohol, the wet mixture molded to the desired shape and then cured pre... | 11/14/1978 |
| 4001148 | Process for the production of flame-resistant phenolic resin foam plastics Flame-resistant foam plastics are prepared by mixing with an aqueous alkaline condensed phenol-formaldehyde resin solution an expanding agent such as hexane and an acidic curing agent after which the mixture is foamed and permitted to cure. Useful acidic ... | 01/04/1977 |
| 3994928 | Process for the production of γ-butyrolactone A process for the liquid-phase hydrogenation of maleic anhydride to γ-butyrolactone in the presence of a catalyst composed of cobalt oxide and palladium on a support of silica.... | 11/30/1976 |
| 3994983 | Process for the production of lower alcohols by direct catalytic hydration lower olefins A process for the production of C2 to C6 alcohols via the direct hydration of olefins in the presence of water, and acid or a strongly acidic solid with the separation of aqueous crude alcohols from the reaction product.... | 11/30/1976 |
