| Patents for C01B 25 - Phosphorus; Compounds thereof (12,526) |
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| 03/05/1991 | CA1280873C Method of synthesizing amorphous group iiia-va compounds |
| 02/20/1991 | CN1011689B Crystalline gallophosphate compositions |
| 02/19/1991 | US4994248 P2 O5 recovery and phosphoric acid purification |
| 02/13/1991 | CN1011583B Production of calcium phosphate for cattle feed from milk of lime and calcium superphosphate |
| 02/07/1991 | DE3925838A1 Recycling zinc and phosphate form phosphating plant sludge - by vaporising in presence of sand and coal at high temp. |
| 02/06/1991 | EP0411381A2 Process for the preparation of ammonium polyphosphate yelding a low viscous aqueous suspension |
| 02/04/1991 | CA2021351A1 Process for producing ammonium polyphosphate which gives a low-viscosity aqueous suspension |
| 01/30/1991 | CN1011402B Technology for removal of magnesium from phosphorous ore |
| 01/29/1991 | US4988489 Recovery of phosphorus values from waste phosphoric acid liquors |
| 01/29/1991 | CA1279634C Activation of aluminum phosphates |
| 01/23/1991 | EP0408664A1 Synthesis of a crystalline molecular sieve |
| 01/23/1991 | CN1011302B Process for preparing magnesium-aluminum-phosphorus-silicon-oxide molecular sieve |
| 01/23/1991 | CN1011301B Process for producing manganese-aluminum-phosphorus-silicon-oxide molecular sieve |
| 01/22/1991 | US4987106 Seeding metal silicate gel in aqueous solution with sepiolite or attapulgite, heating, crystallization |
| 01/22/1991 | US4986977 Recovery of useful products from by-products of phosphate conversion coating process |
| 01/22/1991 | US4986970 Method for removal of heavy metals, especially cadmium, from phosphoric acid containing solutions |
| 01/16/1991 | EP0407717A2 Method for the electrothermal production of yellow phosphorus |
| 01/16/1991 | EP0407426A1 A synthetic crystalline aluminophosphate composition and a method of its synthesis |
| 01/16/1991 | CN1011222B Cobalt-aluminium-phosphorus-silicon-oxide molecular sieve composition |
| 01/16/1991 | CN1011221B Quinary and senary molecular sieve compositions |
| 01/16/1991 | CN1011220B Molecular sieve compositions |
| 01/16/1991 | CN1011219B Process for the production of highly concentrated phosphoric acid |
| 01/15/1991 | US4985317 Electrochemical cells, microstructure |
| 01/15/1991 | US4985221 Polyurethane phlegmatization agent |
| 01/10/1991 | WO1991000244A1 Process for eliminating heavy metals from phosphoric acid |
| 01/09/1991 | EP0407325A1 A process and an apparatus for agglomeration of a powdery material |
| 01/09/1991 | CN2068964U Defluorinating device by phosphoric acid concentration |
| 01/09/1991 | CN1048378A Process for production of potassium nitrate, potassium dihydrogen phosphate, potassium sulfate |
| 01/08/1991 | US4983363 Apparatus for purifying arsine, phosphine, ammonia, and inert gases to remove Lewis acid and oxidant impurities therefrom |
| 01/08/1991 | US4983234 Phosphine inhibition |
| 01/02/1991 | CN1048202A Recovery and utilization of gypstack leachate in hemihydrate phosphoric acid process |
| 12/27/1990 | EP0404219A1 Novel crystalline aluminophosphates and related compounds |
| 12/26/1990 | CN1048015A Prodn. of feed-grade calcium hydrogen phosphate (cahpo4) by low rotio sulfuric acid wet proces |
| 12/25/1990 | US4980142 Preparation of phosphorous acid |
| 12/23/1990 | CA2019550A1 Crystalline aluminophosphates and related compounds |
| 12/19/1990 | EP0402596A1 Process and installation for the preparation of calcium hydrogen phosphate |
| 12/12/1990 | CN1047661A Preparation of tricalium phosphate |
| 12/12/1990 | CN1047627A Preparation of artificial bone materials with hydroxylapatite |
| 12/11/1990 | US4976942 Removal of oxygen impurity by using nickel arsenide, phosphide, boride or selenide |
| 12/05/1990 | CN1010674B Metallophosphoaluminates and their synthesis |
| 12/04/1990 | US4975162 Removal of cadmium from phosphoric acid-containing solutions |
| 11/29/1990 | DE4010778A1 Selective removal of cadmium from wet process phosphoric acid |
| 11/28/1990 | EP0399521A2 Process for extracting cadmium-ions from wet process phosphoric acid |
| 11/21/1990 | CN1047063A Feedstuff calcium hydrogen phosphate production by defluorination with gravity floatation |
| 11/20/1990 | US4971778 Process for working up phosphoric acid |
| 11/20/1990 | US4971739 Method of producing fluorapatite and a moisture sensitive resistor using fluorapatite obtained by the same |
| 11/20/1990 | CA1276430C Porous hydroxyl apatite material |
| 11/20/1990 | CA1276429C Process for the production of maddrell's salt |
| 11/14/1990 | CN1010401B Process of producing ammonium phosphate |
| 11/07/1990 | EP0396043A2 Method for the production of potassium magnesium phosphate |
| 11/06/1990 | US4968499 Conversion of precipitator dust into phosphorus furnace feedstock |
| 11/06/1990 | US4968490 Spheroidal alkali metal polyphosphates of low apparent density, and apparatus for making them |
| 11/06/1990 | CA1276001C High pore volume aluminum phosphate |
| 10/31/1990 | EP0394748A2 Method of upgrading phosphoric acid |
| 10/30/1990 | CA1275559C Process for production of dialkali metal phosphates by ion exchange |
| 10/28/1990 | WO1990012605A1 Biodegradable composites for internal medical use |
| 10/28/1990 | CA2031529A1 Biodegradable composites for internal medical use |
| 10/24/1990 | EP0393138A1 Crystalline molecular sieve |
| 10/09/1990 | US4962228 Catalysts, catalyst supports |
| 10/09/1990 | US4961912 Reacting with oxygen-containing gas |
| 10/09/1990 | US4961819 Using hydroxides and halides of potassium and rubidium as flux and heating to obtain a thermal gradient |
| 10/09/1990 | CA1274968A1 Process for making alkali metal phosphate solutions containing little vanadium |
| 10/04/1990 | WO1990011246A1 Apparatus, process, and composition for in-situ generation of polyhydridic compounds of group iv-vi elements |
| 10/03/1990 | EP0389904A2 Semi-conducting oligomers and method relating thereto |
| 10/03/1990 | EP0389713A1 Process for coating a substrate with a bioactive hydroxyapatite film |
| 10/02/1990 | US4960581 Reacting metal or metal oxide with fluorine gas or nitrogen trifluoride; solid metal fluoride as molding auxiliary |
| 09/23/1990 | CA2010170A1 Semi-conducting oligomers and method relating thereto |
| 09/20/1990 | DE3908449A1 Process for purifying POCl3 |
| 09/18/1990 | US4957674 Molding, calcining under vacuum, firing in air |
| 09/18/1990 | US4957568 Composition and process for activating metal surfaces prior to zinc phosphating and process for making said composition |
| 09/18/1990 | CA1274334A1 Stabilized and carried red phosphorus as flame retardant agent for polymers |
| 09/12/1990 | EP0386060A1 Phosphine emission inhibition. |
| 09/12/1990 | CN1009545B Moisturized compositon of hydrate forming phosphates and method for preparation thereof |
| 09/12/1990 | CN1009544B Conversion of pyrophoric p4 containing material to p2o5 material |
| 09/11/1990 | US4956483 Catalysts or absorbers, zeolites |
| 09/11/1990 | US4956172 Salt formation reacting aluminum trihydroxide with ammonium hydrogen phosphate, used as polishing agents for dentifrices and fillers for plastics |
| 09/11/1990 | US4956165 Molecular sieve compositions |
| 09/11/1990 | US4956163 Method of forming amidophosphates in aqueous solutions |
| 09/05/1990 | EP0385724A2 Improved method for preparing non-aqueous electrolytes |
| 09/05/1990 | CN1045085A Process for preparing potassium dihydrogen phosphate and potassium sulfate |
| 08/29/1990 | EP0384203A1 Desensitized red phosphorus |
| 08/28/1990 | US4952384 Molecular sieve compositions |
| 08/22/1990 | EP0383568A2 Calcium phosphate fibers |
| 08/21/1990 | US4950419 Process, composition, and apparatus for purifying inert gases to remove lewis acid and oxidant impurities therefrom |
| 08/18/1990 | CA2010227A1 Phlegmatized red phosphorus |
| 08/15/1990 | CN1009162B Method for cleaning filtration surface |
| 08/08/1990 | EP0380825A2 Crystalline aluminophosphates and related compounds |
| 08/07/1990 | US4946713 Poly(alkenylpentaborane) ceramic precursors |
| 08/07/1990 | US4946662 Method of forming condensed phosphates in aqueous solutions |
| 08/07/1990 | US4946545 Method of growing homogeneous crystals |
| 08/07/1990 | US4945857 Plasma formation of hydride compounds |
| 07/31/1990 | CA2008755A1 Crystalline aluminophosphates and related compounds |
| 07/26/1990 | WO1990007971A1 Sorption of gaseous compounds of groups ii-vii elements |
| 07/25/1990 | EP0378803A1 Stabilized red phosphorus and method for its preparation |
| 07/25/1990 | CN1044077A Preparation of phosphorus by frunace |
| 07/25/1990 | CN1008906B Novel aluminophosphate composition alpo4-41 |
| 07/18/1990 | CN1008806B Process for producing purified monoammonium phosphate from wet process phosphoric acid |
| 07/11/1990 | EP0377476A1 Method of purifying air containing ammonia and device to be used thereby |
| 07/11/1990 | CN1008724B Process for preparation of granular anhydrous dicalcium phosphate compositions suitable for direct compression tableting |
| 07/10/1990 | US4940570 Beryllium-aluminum-phosphorus-oxide molecular sieve compositions |