| Patents for C01B 25 - Phosphorus; Compounds thereof (12,526) |
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| 12/29/1987 | US4716026 Defluorination kiln restriction control agent and method |
| 12/23/1987 | EP0250382A2 Metallic heat exchanger used in the forced-circulation process for the evaporation of phosphoric acid |
| 12/23/1987 | EP0249723A2 Red phosphorus flame retardant and nonflammable resinous composition containing the same |
| 12/22/1987 | US4714600 Process for production of phosphoric acid from dry matrix by SO3 treatment and extraction |
| 12/16/1987 | EP0248972A2 Ammoniummonofluorophosphates, process for their preparation and their use |
| 12/16/1987 | CN87103421A Method for cleaning the filtration surface |
| 12/15/1987 | US4713229 Removing heavy metals; diorganyl dithiophosphoric acid ester, adsorbent, reductant |
| 12/15/1987 | US4713228 Heat recovery in the manufacture of phosphorus acids |
| 12/09/1987 | EP0248257A2 Process for the manufacture of Monopotassium Phosphate |
| 12/09/1987 | EP0248256A2 Process for the manufacture of monopotassium phosphate |
| 12/09/1987 | CN86108965A Crystalline gallophosphate compositions |
| 12/08/1987 | US4711769 Calcium-phosphorus-apatite having novel properties and process for preparing the same |
| 12/02/1987 | EP0247555A2 Process for the préparation of a pesticide fluid |
| 12/01/1987 | US4710366 Mixing fluosilicic acid into dilute solution; concentrating; crystallizing impurities; nonsettling |
| 11/19/1987 | EP0245897A1 Process of preparing virtually cadmium-free calcium sulphate and calcium sulphate prepared according to this process |
| 11/19/1987 | EP0245600A2 Process for the plasma synthesis of hydride compounds and apparatus for carrying out said process |
| 11/17/1987 | US4707361 Granular anhydrous dicalcium phosphate compositions suitable for direct compression tableting |
| 11/17/1987 | US4707344 Production of ingredients for detergents and soap powders from alkali phosphates |
| 11/10/1987 | US4705671 Apparatus for reducing iron and vanadium in phosphoric acid solution |
| 11/10/1987 | US4705529 Process for reducing the reactivity and improving the flow behavior of phosphorus pentoxide |
| 11/04/1987 | EP0244021A1 Method for the removal of cadmium from acid phosphate-containing aqueous media |
| 11/03/1987 | US4704263 Production of potassium phosphates by ion exchange |
| 11/03/1987 | US4704262 Weak cation exchange resin |
| 11/03/1987 | US4704211 Process for the production of crystalline alkali metal aluminum phosphate |
| 10/28/1987 | EP0242678A2 Process for the preparation of phosphorus pentoxide with reduced reactivity |
| 10/27/1987 | US4702896 Two-stage calcining to product for acidulation to phosphoric aicd; free of interferers |
| 10/20/1987 | US4701314 Method of producing microsized amorphous particles of metal phosphate |
| 10/14/1987 | EP0240880A2 Dicalcium phosphate dihydrate for fluoride dentifrice compositions |
| 10/14/1987 | EP0240635A1 Process for the manufacture of disodium phosphate |
| 10/07/1987 | CN86101957A Process of separating and recovering valuable elements from pig iron |
| 10/06/1987 | US4698216 Oxidation of phosphorous; heat recovery |
| 10/06/1987 | US4698215 Stabilized red phosphorus for use as flame-retardant, in particular for compositions on the basis of polymers |
| 09/29/1987 | US4696953 Scavengers for the removal of impurities from arsine and phosphine |
| 09/29/1987 | US4696807 Crystalline microporous oxide MCM-21 and process for its preparation |
| 09/22/1987 | US4695642 Method for preparing crystalline zirconium phosphates |
| 09/22/1987 | US4695447 Destruction of inorganic hazardous wastes |
| 09/16/1987 | EP0237212A2 Crystalline mircoporous oxide |
| 09/16/1987 | EP0236617A1 Phosphate solutions and their use as binders |
| 09/08/1987 | US4692323 Adding ammonium compound to form complex, precipitation |
| 09/08/1987 | US4692228 Cathodic reduction |
| 09/08/1987 | US4692203 Process for making beta-zinc diphosphide monocrystals (whiskers) |
| 09/02/1987 | CN86104128A Prepn. of potassium dihydrogen phosphate through liquid-liquid double decomposition reaction |
| 09/01/1987 | US4690809 Process for the preparation of asbestiform crystalline calcium sodium metaphosphate fibers |
| 09/01/1987 | US4690808 Crystalline gallophosphate compositions |
| 08/26/1987 | EP0233523A2 Process for the manufacture of raw phosphoric acid |
| 08/26/1987 | EP0233467A2 Sodium aluminium fluorophosphates and processes for their preparation |
| 08/25/1987 | US4689121 Recovery of phosphorus from sludge |
| 08/19/1987 | EP0232766A2 Process for eliminating heavy metals from mineral acids |
| 08/19/1987 | CN86107535A Calcium phosphate type hydroxy apatite and their produced method |
| 08/19/1987 | CN86106563A Phosphate solutions and their use as binders |
| 08/18/1987 | US4687651 Method for producing ammonium polyphosphate |
| 08/11/1987 | US4686094 Treatment of pyrophoric elemental phosphorus-containing material |
| 08/11/1987 | US4686093 Molecular sieve compositions with aluminum, phosphorus and at least two other elements |
| 08/11/1987 | CA1225378A1 Treatment for phosphorus-containing waste material |
| 08/05/1987 | EP0230570A1 Porous hydroxy apatite material |
| 08/04/1987 | US4684673 Surgical cement from amorphous tricalcium phosphate, poly(carboxylic acid) and water |
| 08/04/1987 | US4684512 Phosphate recovery from wet phosphoric acid purification process |
| 07/29/1987 | EP0230355A2 Process for production of dialkali metal phosphates by ion exchange |
| 07/29/1987 | EP0230214A2 Process for the preparation of substantially crystalline calcium sodium metaphosphate |
| 07/28/1987 | US4683127 Process for making wet-process phosphoric acid |
| 07/22/1987 | CN86104840A No effluent cyclic technology for preparing phosphoric acid by hydrochloric acid decomposition of phosphate ore and liquid-liquid extraction |
| 07/15/1987 | CN86107584A Calcium-phosphate type hydroxyapatite for chromatographic separation and process for producing same |
| 07/07/1987 | US4678650 Process for making an alkali phosphate solution |
| 07/07/1987 | US4678649 Potassium acid sulfate and phosphate in presence of phosphoric acid |
| 07/01/1987 | EP0227630A2 Process for the preparation of substantially crystalline calcium sodium metaphosphate |
| 07/01/1987 | EP0227629A2 Process for the preparation of asbestiform crystalline calcium sodium metaphosphate fibers |
| 07/01/1987 | EP0227235A2 Process of removing cationic impurities from wet process phosphoric acid |
| 07/01/1987 | EP0226690A1 Process for the treatment of alpha calciumsulfat hemihydrate and the obtained product therefrom |
| 06/30/1987 | US4676963 Salt formation, neutralization |
| 06/24/1987 | EP0226219A2 Crystalline gallophosphate compositions |
| 06/24/1987 | EP0225961A2 Low volatile fluorine process for making elemental phosphorus |
| 06/23/1987 | US4675188 Granular anhydrous dicalcium phosphate compositions suitable for direct compression tableting |
| 06/18/1987 | WO1987003491A1 Porous hydroxylapatite material |
| 06/16/1987 | US4673555 Method for preparation of defluorinated phosphate |
| 06/16/1987 | US4673355 Artificial teeth and bones; nonapatitic |
| 06/16/1987 | EP0225450A2 Process for the preparation of Maddrell salt |
| 06/10/1987 | EP0224743A2 Process for removing cations from aqueous solutions by the addition of crandallite |
| 06/09/1987 | US4671949 From a solution of mono- and disodium orthophosphate |
| 06/09/1987 | US4671948 Anhydrous sodium tripolyphosphate |
| 06/09/1987 | US4671947 Novel sodium orthophosphate |
| 06/09/1987 | CA1222615A1 Alkaline processing of naturally occurring calcium aluminium and iron phosphates |
| 06/02/1987 | US4670487 Stabilized red phosphorus and the use thereof for flameproof, thermoplastic polyamide moulding compositions |
| 06/02/1987 | US4670241 P4 gas generator using the alkali metal polyphosphide MP15 |
| 06/02/1987 | US4670225 Apparatus for continuously making, in dry phase, exothermic reactions involving liberation of gas, and products obtained, particularly calcium phosphates |
| 06/02/1987 | CA1222376A1 Global recovery of uranium, yttrium, thorium and rare earths from a phosphated mineral in the course of a wet treatment process for the preparation of phosphoric acid |
| 06/02/1987 | CA1222367A1 Method of producing di-ammonium phosphate fertilizer |
| 05/27/1987 | EP0223687A1 Process for the production of rare earth hydroxides by treatment of minerals which contain rare earth phosphates |
| 05/26/1987 | US4668492 Process for dearsenifying phosphoric acid solutions |
| 05/26/1987 | US4668488 Process for the treatment of gases incurred in the manufacture of phosphorus |
| 05/26/1987 | US4668487 Alkaline processing of naturally occurring calcium aluminium and iron phosphates |
| 05/13/1987 | EP0221473A2 Heat-resistant yellow pigments, process for their preparation and their use |
| 05/13/1987 | EP0221057A1 Disposable chemical container |
| 05/12/1987 | US4664896 Materials handling, pollution control |
| 05/12/1987 | US4664838 Rapidly hexahydrated sodium tripolyphosphate detergent compositions |
| 05/06/1987 | EP0220198A1 Preparing metal compounds by pyrolysis. |
| 04/28/1987 | US4661331 Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid |
| 04/28/1987 | US4661282 Mixed metal oxides and partially hydrated oxides, coprecipitation |
| 04/22/1987 | EP0218842A2 Method for producing single beta-zinc diphosphide crystals |
| 04/22/1987 | CN86106384A Prepn. of phosphoric acid from ferric-aluminium phosphate by direct extraction |
| 04/21/1987 | US4659552 Scavengers for the removal of impurities from arsine and phosphine |