| Patents for C01B 25 - Phosphorus; Compounds thereof (12,526) |
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| 04/06/1982 | US4323114 Cluster heat exchanger |
| 03/31/1982 | EP0048435A1 Process for the preparation of granular condensed phopsphates |
| 03/31/1982 | EP0048341A1 Process for the preparation of granulate alkali di- or triphosphates |
| 03/30/1982 | CA1120961A1 Whitlockite ceramic |
| 03/30/1982 | CA1120688A1 Production of phosphorous acid |
| 03/23/1982 | US4321245 Process for the purification of wet-processed phosphoric acid |
| 03/23/1982 | US4321244 Process for the treatment of a calcium aluminophosphate |
| 03/23/1982 | US4321238 Process for high temperature phosphate ore burning |
| 03/23/1982 | CA1120237A1 Process and apparatus for contacting substances which occur in the form of at least two different phases |
| 03/16/1982 | US4319894 Process and process apparatus for separating gaseous phosphorus trichloride from a gas stream |
| 03/16/1982 | CA1119820A1 Carbon carrier suitable for use in electrothermal reduction processes, and process for making it |
| 03/16/1982 | CA1119775A1 Process for preparation of lead compounds |
| 03/10/1982 | EP0046925A1 Process for the production of a rapidly soluble polyphosphate glass |
| 03/10/1982 | EP0046924A1 Process for the production of a rapidly soluble polyhosphate glass |
| 03/10/1982 | EP0046865A2 Process for the preparation of phosphorus pentoxide using reaction heat |
| 03/09/1982 | CA1119378A1 Preparation of sodium orthophosphate mixtures |
| 03/02/1982 | US4317807 Recirculation loop |
| 03/02/1982 | US4317778 Preparation of maleic anhydride using fluidized catalysts |
| 02/24/1982 | EP0046333A1 Bismuth-containing catalyst compositions of use in the oxidation of methacrolein, production thereof and oxidation of methacrolein utilizing them |
| 02/17/1982 | EP0045853A1 Oxidation catalyst, particularly for the preparation of methacrylic acid by gas-phase oxidation of methacrolein |
| 02/17/1982 | EP0045826A1 Dicalcium phosphate dihydrate having improved stability and a method for preparing it |
| 02/16/1982 | US4315899 Process for the purification of wet phosphoric acid |
| 02/16/1982 | US4315898 Preparation of granular sodium tripolyphosphate hexahydrate with low friability |
| 02/16/1982 | US4315897 Stabilized red phosphorus and process for its manufacture |
| 02/16/1982 | US4315864 Vanadium and phosphorus oxide oxidation catalyst |
| 02/16/1982 | CA1118183A1 Process and device for the preparation of a product containing ammonium orthophosphate, and product obtained by this process |
| 02/09/1982 | US4314978 Increased production of wet process phosphoric acid by gelatin addition |
| 02/09/1982 | CA1117730A1 Removal of magnesium and aluminum impurities from wet process phosphoric acid |
| 02/09/1982 | CA1117705A1 Corrosion-inhibiting pigment based on phosphate |
| 02/02/1982 | US4313919 Process for removing fine solids from phosphoric acid by vacuum filtration |
| 02/02/1982 | US4313918 Process and device for the preparation of a product containing ammonium orthophosphate, and product obtained by this process |
| 02/02/1982 | US4313915 In the presence of an ethylene oxide fatty alcohol adouct nonionic surfactant |
| 02/02/1982 | US4313826 Liquid-liquid extraction apparatus |
| 01/26/1982 | US4312844 Heating iron oxide or chromium oxide with a basic phosphate compound |
| 01/26/1982 | US4312843 Dicalcium phosphate dihydrate having improved monofluorophosphate compatibility and process for the preparation thereof |
| 01/26/1982 | US4312842 Use of evolved sulfur dioxide to form sulfuric acid used in process; air pollution control |
| 01/26/1982 | US4312787 Coated catalysts containing high loading of active phase, particularly useful in the preparation of maleic anhydride |
| 01/20/1982 | EP0044120A2 Process for the preparation of phosphoric acid and calcium sulphate anhydrite |
| 01/19/1982 | US4311681 Method of regenerating phosphoric acid extraction solvent |
| 01/19/1982 | US4311677 Recovering uranium from phosphate rock |
| 01/19/1982 | US4311675 Maintaining reductive strip efficiency in uranium recovery processes |
| 01/19/1982 | US4311570 Chemical process on the surface of a rotating body |
| 01/19/1982 | CA1116537A1 Recovery of phosphane and methylphosphane |
| 01/13/1982 | EP0043562A1 Crystalline metallophosphate compositions |
| 01/12/1982 | US4310440 Crystalline metallophosphate compositions |
| 01/12/1982 | US4310341 Removal of --OH impurities from fiber optic precursor materials |
| 01/12/1982 | CA1115928A1 Preparation of granular sodium tripolyphosphate products from screen undersize sodium tripolyphosphate particles |
| 01/05/1982 | US4309395 High purity, from phosphate rock |
| 01/05/1982 | US4309394 Forming phosphorus pentoxide from elemental phosphorus and oxygen, adding limited amount of water |
| 01/05/1982 | CA1115485A1 Process for removing humic matter from phosphoric acid solutions |
| 01/05/1982 | CA1115484A1 Pretreatment method for the recovery of uranium from wet-process phosphoric acid |
| 01/05/1982 | CA1115483A1 Preparation of monocalcium phosphate and phosphoric acid |
| 01/05/1982 | CA1115482A1 Preparation of granular sodium tripolyphosphate products |
| 01/05/1982 | CA1115481A1 Production of sodium tripolyphosphate |
| 12/29/1981 | US4308049 Process for the absorption of ammonia in acid solutions or slurries |
| 12/29/1981 | CA1115023A1 Solution polymerization of chlorophosphazene with sulfur modifier |
| 12/22/1981 | CA1114967A1 High capacity folded moving bed ion exchange apparatus and method for treating phosphoric acid |
| 12/16/1981 | EP0041626A1 Defoamer mixture of alkali salts of the dialkyl esters of sulfosuccinic acid and long-chained aliphatic alcohols and use of this mixture for skimming acid decomposition materials |
| 12/15/1981 | US4305915 Stabilized wet process phosphoric acid |
| 12/15/1981 | CA1114131A1 Hemihydrate type phosphoric acid process |
| 12/08/1981 | US4304754 Beneficiation of phosphate rock containing large amounts of organic matter |
| 12/08/1981 | US4304052 Drying intumescent material |
| 12/08/1981 | CA1113681A1 Method of purifying phosphoric acid after solvent extraction |
| 11/25/1981 | EP0040487A1 Method of regenerating phosphoric acid extraction solvent |
| 11/24/1981 | US4302249 Method for processing wastes resulting from production of phosphorus namely, slime and off-gases, with utilization of the resultant products |
| 11/24/1981 | CA1112842A1 Post treatment method for the recovery of uranium from wet-process phosphoric acid |
| 11/24/1981 | CA1112841A1 Manufacture of water-insoluble ammonium polyphosphate |
| 11/18/1981 | EP0040122A1 Process for making solid-particle products, in particular NP/NPK granulated fertilizers containing ammonium phosphates |
| 11/17/1981 | US4301131 Oxidation of phosphoric acid plus K compound addition |
| 11/17/1981 | US4301130 Method of washing waste phosphogypsum |
| 11/17/1981 | US4301030 Bi-containing methacrolein oxidation catalysts |
| 11/11/1981 | EP0039537A1 Improved mixed vanadium phosphorus oxide catalysts and preparation thereof and use in production of maleic anhydride |
| 11/10/1981 | US4299806 Treating with a tetraalkylammonium halide - aliphatic alcohol solution |
| 11/10/1981 | US4299805 Water washing following by contacting with a base, then mineral acid |
| 11/10/1981 | US4299804 Removal of magnesium and aluminum impurities from wet process phosphoric acid |
| 11/10/1981 | US4299803 Production of alkali metal phosphate solutions free from zinc |
| 11/10/1981 | CA1112020A1 Purification of phosphoric acid |
| 11/04/1981 | EP0039119A1 Process for recovering yttrium and lanthanides from wet-process phosphoric acid |
| 11/03/1981 | US4298583 Process for manufacturing phosphoric acid |
| 11/03/1981 | US4298037 Method of shipping and using semiconductor liquid source materials |
| 11/03/1981 | CA1111783A1 Method and apparatus for handling crud during solvent extraction |
| 10/28/1981 | EP0038479A1 Catalysts for the oligomerisation of olefines |
| 10/27/1981 | US4297334 By filtration through activated carbon |
| 10/20/1981 | US4296082 Purification of wet process phosphoric acid |
| 10/20/1981 | US4295986 Low temperature catalytic reduction |
| 10/20/1981 | CA1110823A1 Process for manufacture of phosphoric acid and phosphorus pentafluoride |
| 10/14/1981 | EP0037735A1 Recovering heat from burning elemental phosphorus and method of preparing ultraphosphoric acid |
| 10/13/1981 | US4294809 Aeration of phosphoric acid |
| 10/13/1981 | US4294808 Rotation |
| 10/13/1981 | US4294621 Production of an anticorrosive pigment on phosphate basis |
| 10/07/1981 | EP0036924A2 Process and apparatus for the production of phosphorus pentasulphide having a constant low reactivity |
| 10/06/1981 | US4293526 Process and apparatus for the condensation of solids |
| 10/06/1981 | US4293498 Preparation of maleic anhydride |
| 10/06/1981 | US4293311 Phosphoric acid crystallizer underflow return |
| 09/30/1981 | EP0036623A2 Method of preparing catalysts for the gas phase oxidation of saturated and/or unsaturated C4-hydrocarbons to maleic anhydride |
| 09/29/1981 | US4292289 Reacting fluoride- and phosphate-bearing ore with fluosulfonic acid |
| 09/29/1981 | US4292278 Purification of wet process phosphoric acid as a pretreatment step in the recovery of uranium |
| 09/29/1981 | CA1109635A1 Purifying and defluorinating impure phosphoric acid |
| 09/22/1981 | US4291184 Process for producing tertiary-butylstyrene |
| 09/22/1981 | US4291183 Oxidative dehydrogenation using an aluminum-calcium-cesium phosphate catalyst |