Patents
Patents for C01B 25 - Phosphorus; Compounds thereof (12,526)
04/1994
04/12/1994CA1328344C Reducing anti-foam consumption in phosphoric acid production
04/06/1994EP0590374A1 Process for preparation of hydroxyapatite
04/05/1994US5300464 Mixing high aspect ratio phyllosilicate with lithium disilicate or alkaline earth silicate porecursor glass, extruding and sintering
04/05/1994CA1328189C Preparation of tricalcium phosphate
03/1994
03/31/1994WO1994006575A1 Compositions and methods for waste treatment
03/31/1994CA2145310A1 Compositions and methods for waste treatment
03/30/1994CN1084488A Process and plant for removing lead, cadmium and zinc from dusts
03/29/1994US5298545 Basic calcium aluminum hydroxy phosphites, a process for their production and their use
03/22/1994US5296212 Method for the removal of sulfur from phosphorus
03/16/1994EP0586910A1 Process and installation for removing lead, cadmium and zinc from dusts
03/16/1994EP0586820A1 Phosphate-alumina composition of controlled pore size for use in catalysts
03/16/1994CN1023994C Defluorinating agent for wet defluorination of phosphoric acid
03/15/1994US5294429 Incorporating a diamine and metal substituting for some aluminum
03/15/1994US5294424 Hydration then dehydration sodium phosphates
03/15/1994CA1327694C Conversion of calcium compounds into solid and gaseous compounds
03/08/1994US5292701 High pore volume and pore diameter aluminum phosphate and method of making the same
03/08/1994US5292494 Process for production of red phosphorous powder
03/03/1994WO1994004460A1 Methods and compositions for mineralizing and fluoridating calcified tissues
03/03/1994CA2121243A1 Methods and compositions for mineralizing and fluoridating calcified tissues
03/01/1994CA1327256C Fine filling method and fine filler for dental purposes
02/1994
02/23/1994CN1023862C Preparation for high concentrate phosphorus acid
02/22/1994CA1327113C Process for the removal of heavy metals from acid, phosphate-containing, aqueous media
02/18/1994CA2104052A1 (cobalt)(silicon)-aluminophosphates and process for preparing the same
02/16/1994CN1081928A Closed circulation process for continuously thickening dreg-flushing liquid in wet phosphoric acid filter
02/15/1994US5286582 Monaqueous electrolyte secondary battery and process for producing positive active materials
02/09/1994CN1081650A Automatic controlling apparatus for erythrophosphorus conversion and method thereof
02/08/1994CA1326754C Filtration aids for removal of calcium solids from aqueous phosphoric acid
02/08/1994CA1326753C Process for the manufacture of monopotassium phosphate
02/03/1994WO1994002412A1 Bone materials
02/03/1994WO1994002411A1 Method for preparing phosphocalcium hydroxyapatite, use thereof for bone or tooth filling or for moulding parts, and products used therein
02/02/1994EP0581622A1 Process for preparation of rare earth phosphates and products obtained thereby
02/02/1994EP0581621A1 New green mixed lanthanum, terbium and cerium phosphate phosphors, their precursors and processes for their preparation
02/02/1994EP0580915A1 Process for the elimination of build-up contaminants in an organic stream for production of pure phosphoric acid
02/01/1994US5283042 Using activated charcoal
01/1994
01/26/1994EP0579666A1 Selective hydroxylation of phenol or phenolic ethers.
01/25/1994US5281405 Optically useful compositions and a sol-gel process for their production
01/18/1994US5279806 Adding calcium; forming precipitate and filtering
01/11/1994US5277887 Reacting ammonium orthophosphate and phosphorus pentoxide in presence of gasous ammonia
01/04/1994US5276251 Process for treating organic phosphoric acids
01/04/1994CA1325707C Granular tricalcium phosphate compositions suitable for direct compression tableting
12/1993
12/28/1993US5273577 Bismuth phosphovanadate pigments
12/23/1993WO1993025472A1 Process for purifying phosphoric acid
12/23/1993WO1993025075A1 Formulations, method and apparatus for the controlled generation of phosphine
12/23/1993CA2137074A1 Formulations, method and apparatus for the controlled generation of phosphine
12/15/1993EP0573480A1 Basic calcium aluminium hydroxyphosphites, method for preparing them and use thereof.
12/14/1993US5270370 Contacting with trans-cinnamaldehyde
12/11/1993CA2070949A1 Production of phosphorous acid using gas plasma
12/07/1993US5268167 Dental restorative; amorphous calcium phosphate fluoride and carrier
12/07/1993US5268124 Method of making alkaline earth metal halophosphate phosphor using metal phosphide reducing agent
12/07/1993CA1324915C Process for recovering heat from a carbon monoxide gas containing elemental phosphorus
11/1993
11/25/1993DE4216783A1 Purificn. of phosphorous acid mixts. produced during halogenation of hydrocarbon(s) - by treatment with water vapour followed by membrane filtration
11/24/1993EP0367808B1 Process of preparing hydroxylapatite
11/23/1993CA1324480C Process for the manufacture of disodium phosphate
11/16/1993US5262963 Automatic control system for phosphoric acid plant
11/09/1993US5260241 Controlled pore size phosphate-alumina material and method for producing same
11/03/1993EP0567640A1 Ionic conductors for solid oxide fuel cells
10/1993
10/27/1993CN2144645Y Device for preparation of phosphorus pentachloride
10/27/1993CN1022556C Feedstuff calcium hydrogen phosphate production by defluorination with gravity floatation
10/26/1993US5256544 Microbial solubilization of phosphate
10/26/1993US5256394 Radiological imaging method, and contrast media reagents therefor
10/20/1993EP0566231A1 Process for production of red phosphorus powder
10/19/1993CA1323172C Production of red phosphorus
10/14/1993WO1993019788A1 Methods and compositions for magnetic resonance imaging
10/14/1993CA2132744A1 Methods and compositions for magnetic resonance imaging
10/13/1993EP0564451A1 Method of alkalimonofluorophospate manufacture.
10/12/1993US5252306 Reaction of elemental phosphorus and chlorine in a liquid phosphorus trichloride layer
09/1993
09/29/1993CN1076592A One-step method for production of calcium dihydrogen phosphate as forage
09/21/1993US5246902 Synthetic microporous solids containing gallium and phosphorous, their synthesis and their use as catalysts and adsorbents
09/21/1993US5246681 Process for the removal of cadmium from solutions of phosphoric acid
09/08/1993EP0559508A1 Novel coating for prosthesis
09/08/1993EP0558887A1 Inorganic microporous particles and process for their preparation
09/08/1993EP0205622B1 Calcium-phosphorus type apatite having novel properties and process for its production
09/02/1993WO1993016956A1 Optically useful compositions and a sol-gel process for their production
08/1993
08/31/1993US5240681 Apparatus for injection analysis of total inorganic phosphate
08/17/1993US5236679 Adding acid soluble silica to accidulation slurry of phosphate rock, precipitating calcium tetrafluoro aluminate
08/17/1993CA1321295C Moisturized compositions of hydrate-forming phosphates and methods for preparation thereof
08/11/1993EP0555168A1 Process for manufacturing crystal form II solid ammonium polyphosphate
08/05/1993WO1993007905A3 Treated apatite particles for medical diagnostic imaging
08/05/1993DE4203011A1 Yellow phosphorus@ purificn. - by mixing melt with active carbon@ powder in turbulent flow
08/03/1993US5232794 Ionic conductors for solid oxide fuel cells
08/03/1993US5232683 Crystalline aluminophosphates and related compounds
08/03/1993US5232620 Wetting the anhydrous granules obtained from heating the sodium orthophosphate with a quantity of water, drying to expel unbound water
07/1993
07/27/1993US5230876 Precipitation and separation of vanadium and stripping then oxidation
07/21/1993EP0551637A1 Bismuth vanadate pigments
07/14/1993EP0550874A1 Nanocrystalline materials
07/14/1993CN1074193A Continuous production technology for edible phosphoric acid
07/13/1993US5227483 Reaction with non-volatile acid to liberate the amine and the volatile acid
07/13/1993US5227147 Apatite whisker and method for preparation thereof
07/13/1993CA1320034C Process of preparing virtually cadmium-free calcium sulphate and calcium sulphate prepared according to this process
07/08/1993WO1993013013A1 Procedure for synthesis of crystalline microporous silico-alumino-phosphates
07/06/1993US5225052 Electrodialysis, ion exchange
06/1993
06/30/1993EP0548365A1 Process for producing implant
06/30/1993CN1073659A Process for purification of phosphor
06/30/1993CN1021428C Crystal syntheses in flux and method for ktiopo4 type solid solution epitaxial
06/24/1993WO1993012332A1 Method for diagnosing an engine using computer based models
06/23/1993CN1073410A Energy-saving method for production of yellow phosphorus
06/15/1993CA1319140C Microporous crystalline composite compositions and processes for making them
06/15/1993CA1319008C Phosphate feed material for phosphorus electric furnaces and production of same
06/08/1993US5218140 Carbonylation reaction and catalyst therefor
06/08/1993US5217699 Calcium-phosphate type hydroxyapatite