| Patents for C01B 25 - Phosphorus; Compounds thereof (12,526) |
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| 10/02/1991 | CN1054964A Process for making ammonium phosphate from ammonium bicarbonate |
| 10/02/1991 | CN1054953A Production of phosphoric acid using special shaped rotary kiln |
| 10/01/1991 | US5053212 Artifical bones and teeth |
| 10/01/1991 | CA1289726C Method for the removal of cadmium from acid phosphate-containing aqueous media |
| 10/01/1991 | CA1289725C Process for the preparation of crystalline calcium sodium metaphosphate |
| 10/01/1991 | CA1289724C Process for the preparation of asbestiform crystalline calciumsodium metaphosphate fiber |
| 09/25/1991 | CN1054753A Process for preparing high-purity calcium hydrogen phosphate with waste dregs from production of cyclohexanehexol |
| 09/24/1991 | US5051414 Group Ia metal tungstates with boron, vanadium, phosphorous, silicon or titanium as viricides |
| 09/24/1991 | US5051246 Diaminopropane reacted with aluminophosphate |
| 09/19/1991 | WO1991013679A1 Bulk gas sorption composition and apparatus |
| 09/18/1991 | EP0446676A2 Installation for producing ammonium polyphosphate |
| 09/17/1991 | US5049366 Catalysts, catalyst supports, molecular sieves |
| 09/17/1991 | CA1288930C Fast-dissolving, non-caking, food grade sodium tripolyphosphate |
| 09/11/1991 | EP0445593A1 Process for the preparation de dicalcium phosphate dihydrate |
| 09/10/1991 | US5047031 In situ calcium phosphate minerals method |
| 09/10/1991 | CA2037883A1 Process for the selective flotation of phosphorus minerals |
| 09/10/1991 | CA1288578C Method of extracting phosphorus from slime |
| 09/06/1991 | CA2036546A1 Plant for producing ammonium polyphosphate |
| 09/05/1991 | WO1991011257A3 Chemical compound containing alkaline or alkaline earth metals, catalyst containing same, and a transforming and particularly solvolyzing method using said catalyst |
| 09/04/1991 | EP0444437A1 Method for production of a trialkali metal phosphate solution |
| 09/04/1991 | CN1054233A Continuous process for preparation of tetraphosphorus polysulphides |
| 09/03/1991 | US5045294 Process for preparing medium density granular sodium phosphates |
| 09/03/1991 | US5045293 Novel crystalline aluminophosphates and related compounds |
| 08/28/1991 | EP0443739A1 Method for safe handling of arsenic and phosphorous compounds |
| 08/28/1991 | EP0442879A1 Synthesis of a crystalline molecular sieve |
| 08/28/1991 | CN1013663B Process for calcium-phosphate type hydroxyapatite of chromatographic separation |
| 08/27/1991 | US5043151 Process for producing ammonium polyphosphate which gives a low-viscosity aqueous suspension |
| 08/20/1991 | US5041490 Method for producing red phosphorus flame retardant and nonflammable resinous composition |
| 08/14/1991 | EP0441101A1 Phosphate modified bismuth vanadate pigments |
| 08/14/1991 | CN1013500B Brightening agent for sodium tripolyphosphate |
| 08/14/1991 | CN1013490B Improved pipe reactor for the mfr. of ammonium phosphates containing ammonium sulfate |
| 08/13/1991 | CA1287478C Phosphorus recovery from phosphorus-containing pond sludge |
| 08/08/1991 | WO1991011390A2 Synthetic porous crystalline material its synthesis and use |
| 08/08/1991 | WO1991011257A2 Chemical compound containing alkaline or alkaline earth metals, catalyst containing same, and a transforming and particularly solvolyzing method using said catalyst |
| 08/07/1991 | EP0440555A1 Chemical compound containing alkali or earthalkyli, catalyst containing the same, and transformation process, in particular solvolysis using this catalyst |
| 08/06/1991 | US5037639 Methods and compositions for mineralizing calcified tissues |
| 08/06/1991 | US5037624 Composition, apparatus, and process, for sorption of gaseous compounds of group II-VII elements |
| 08/03/1991 | CA2035573A1 Chemical compound containing alkali of alkali-earth metals, catalyst containing same, and transformation process, such as solvolysis, using same |
| 07/31/1991 | EP0439391A1 Continuous method for preparation of tetraphosphorous polysulphides |
| 07/30/1991 | US5035872 Reaction of calcium dihydrogen phosphate with potassium sulfate and magnesium oxide or hydroxide |
| 07/30/1991 | US5035871 Production of concentrated aqueous polyphosphate solutions |
| 07/30/1991 | US5035870 Containing a bipyridyl moiety molecular sieves, catalysts |
| 07/29/1991 | CA2017101A1 Use of polymers for the modification of gypsum crystals in the wet process phosphoric acid production |
| 07/25/1991 | CA2034807A1 Continuous process for the preparation of tetraphosphorus polysulfides |
| 07/24/1991 | EP0437812A1 Apparatus for the preparation of alkaylimonofluophosphate |
| 07/24/1991 | EP0437429A1 Synthetic crystalline molecular sieve and its synthesis |
| 07/23/1991 | US5034059 Composition comprising octacalcium phosphate crystals and polypeptide |
| 07/17/1991 | EP0437067A2 Phosphate compounds, sintered bodies thereof and manufacture of the sintered bodies |
| 07/16/1991 | US5032472 Vapor deposited thin film |
| 07/16/1991 | US5032368 Gallium-aluminum-phosphorus-oxide molecular sieve compositions |
| 07/10/1991 | EP0436499A2 A process for producing a calcium phosphate type powder |
| 07/09/1991 | US5030431 Reacting aluminum salts and phosphate salts, neutrilizing with base, exchanging with acetone, alcohol or ethyl acetate and drying |
| 07/09/1991 | US5030430 Preparation of phosphates by induction melting |
| 07/09/1991 | US5030400 High speed mixer; atomizing wheel for distribution of liquid |
| 06/27/1991 | WO1991008984A1 Basic calcium aluminium hydroxyphosphites, method of production thereof and their use |
| 06/25/1991 | US5026757 Nonpulverized smooth spherical particles; coated with thermosetting resin or aluminum or zinc hydroxide for stability |
| 06/25/1991 | CA1285104C Red phosphorus flame retardant and nonflammable resinous composition containing the same |
| 06/18/1991 | US5024825 Process for the preparation of dicalcium phosphate |
| 06/12/1991 | EP0431660A2 Crystalline aluminophosphates and related compounds |
| 06/11/1991 | CA1284761C Method of synthesizing group iii element-phosphorus compound |
| 06/06/1991 | DE4001430C1 Producing alkali metal mono-fluoro:phosphate(s) - using platinum-rhodium melt crucible applying direct potential between electrodes |
| 06/05/1991 | EP0430919A2 Process for preparing sodium tripolyphoshate |
| 06/05/1991 | CN1012726B Synthetic process of calcium hydroxy phosphate and its usage |
| 06/04/1991 | US5021586 Dithiophenylpyrrole derivative monomers for preparing semi-conducting polymers |
| 06/04/1991 | US5021384 Process for producing crystalline oxide of vanadium-phosphorus system and catalyst containing the crystalline oxide |
| 06/04/1991 | US5021368 Novel ceramic-metal compounds |
| 05/29/1991 | EP0428912A2 Process for the preparation of purified alkaline phosphate solution |
| 05/28/1991 | US5019364 Method for purifying gaseous hydrides |
| 05/25/1991 | CA2030663A1 Crystalline aluminophosphates and related compounds |
| 05/23/1991 | DE3938224A1 Pure alkali metal phosphate soln. prodn. - by wet phosphoric acid treatment with alkali metal hydroxide |
| 05/21/1991 | CA1284296C Dicalcium phosphate dihydrate for fluoride dentifrice compositions |
| 05/16/1991 | DE3937468A1 Re-extn. of iron from organic soln. contg. citrate ester extractant - by pptn. in the aq. phase as iron phosphate by mixing with aq. phosphoric acid at 50-90 deg. C and iron:acid mol. ratio 1:2-4 |
| 05/14/1991 | US5015411 Process, composition, and apparatus for purifying inert gases to remove Lewis acid and oxidant impurities therefrom |
| 05/14/1991 | CA1284016C Desensitized red phosphorus |
| 05/08/1991 | EP0426048A2 Production and use of crystalline hydrogen-phosphate compounds having layer structure |
| 05/07/1991 | US5013559 Pyrophosphites, fungicides for plants |
| 05/07/1991 | US5013535 Treatment with boric acid, stabilizing crystal structure, molecular sieves |
| 05/02/1991 | EP0425029A2 Crystalline aluminophosphates |
| 04/28/1991 | CA2028515A1 Crystalline aluminophosphates and related compounds |
| 04/23/1991 | US5009873 Crystal modification in wet process phosphoric acid production |
| 04/23/1991 | CA1283254C Heat resistant yellow pigments, processes for their preparation and their use |
| 04/17/1991 | EP0422208A1 Biodegradable composites for internal medical use |
| 04/09/1991 | US5006319 Strongly basic anion exchange resin |
| 04/09/1991 | CA1282576C Stabilized and desensitized flowable red phosphorus |
| 04/09/1991 | CA1282573C Spheroidal alkali metal polyphosphates of low apparent density, and process and apparatus for making them |
| 04/02/1991 | US5004589 Process for preparing sodium tripolyphosphate |
| 04/02/1991 | CA1282224C Process for removing metallic constituents from dust obtained during theelectrothermal production of yellow phosphorus |
| 03/27/1991 | CN1050170A Magnesium removal method for phosphorated ore |
| 03/26/1991 | US5002745 Method of separating and recovering phosphorus from phosphorus sludge |
| 03/26/1991 | US5002744 Method for defluorinating wet process phosphoric acid |
| 03/20/1991 | EP0417863A2 Crystalline aluminophosphates |
| 03/20/1991 | EP0417505A2 Process for the preparation of sodium of tripolyphosphate |
| 03/16/1991 | CA2025333A1 Crystalline aluminophosphates and related compounds |
| 03/13/1991 | EP0416761A1 Formulations for in situ prepared calcium phosphate minerals |
| 03/13/1991 | EP0416243A2 Ionic conductor or electrolyte for galvanic element |
| 03/13/1991 | EP0407426A4 A synthetic crystalline aluminophosphate composition and a method of its synthesis |
| 03/13/1991 | CN1011960B Preparation method for molecular sieve composition |
| 03/13/1991 | CN1011959B Preparation method for molecular sieve compositions |
| 03/05/1991 | US4997638 Melting, cooling |
| 03/05/1991 | US4997634 Roasting sodium phosphate, crystallization |