| Patents for C01G 27 - Compounds of hafnium (508) |
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| 07/15/2003 | US6592764 Amphiphilic ethylene oxide-propylene oxide block copolymers structure directing agents for metal oxide molecular sieves in self-assembling systems; large-pore; combines copolymer self-assembly with chelating complexation of inorganic oxide |
| 07/03/2003 | US20030124394 Multilayer structure used especially as a material of high relative permittivity |
| 07/02/2003 | EP1324378A1 Mehrlagige Struktur, verwendet für Materialine mit hoher Permitivität |
| 07/02/2003 | EP1323845A1 Multilayer structure |
| 07/01/2003 | US6586344 Mixing zirconium/hafnium chloride with zirconium/hafnium-tetramethylheptanedione complex and benzene, refluxing in argon atmosphere, removing solvents, then sublimating; chemical vapor deposition; semiconductors |
| 06/30/2003 | CA2415324A1 Multilayer structure, used in particular as a material with high relative permittivity |
| 06/30/2003 | CA2415312A1 Multilayer structure, used in particular as a material with high relative permittivity |
| 05/07/2003 | EP1308419A1 Precursors for zirconium and hafnium oxide thin film deposition |
| 05/07/2003 | CN1415782A Precursor body for zirconia and Hf Oxide thin film deposition |
| 05/02/2003 | EP1135335B1 Thin hafnium oxide film and method for depositing same |
| 05/01/2003 | US20030082927 Precursors for zirconium and hafnium oxide thin film deposition |
| 01/03/2003 | WO2003000020A2 Compositions and methods for anion adsorbent metal hydroxides |
| 11/20/2002 | CN1380254A Method for preparing oxide powder |
| 10/29/2002 | US6472337 Precursors for zirconium and hafnium oxide thin film deposition |
| 10/24/2002 | WO2002083960A1 Method for separating zirconium and hafnium tetrachloride with the aid of a melted solvent |
| 10/24/2002 | CA2412622A1 Method for separating hafnium and zirconium tetrachlorides |
| 10/10/2002 | US20020146365 GHydrothermally reacting oxide precursors in the presence of a metal complex-forming ligand to form pure oxide powder |
| 08/08/2002 | US20020104599 Sol-gel process; forming a solution containing dissolved metal salts, and adding a proton scavenger (such as an epoxide) to the solution for inducing and controlling gelation. |
| 05/29/2002 | CN1085624C Composite oxide having oxygen absorption and release capabilities and process for preparing the same |
| 04/24/2002 | CN1083400C Process for preparing precipitate of metal oxide |
| 04/11/2002 | WO2002001622A3 Novel non-crystalline oxides for use in microelectronic, optical, and other applications |
| 03/14/2002 | WO2002020408A1 Method for separating metals such as zirconium and hafnium |
| 02/28/2002 | US20020024108 Novel non-crystalline oxides for use in microelectronic, optical, and other applications |
| 02/06/2002 | EP1178129A1 Polycrystalline thin film and method for preparation thereof, and superconducting oxide and method for preparation thereof |
| 01/03/2002 | WO2002001622A2 Novel non-crystalline oxides for use in microelectronic, optical, and other applications |
| 09/26/2001 | EP1135335A1 Thin hafnium oxide film and method for depositing same |
| 09/05/2001 | CN1070459C Composition oxide having oxygen absorbing and desorbing capability and method for preparing same |
| 08/08/2001 | CN1069293C Method for preparing composite oxide having oxygen absorbing and desorbing capability |
| 06/07/2001 | WO2001040536A1 Polycrystalline thin film and method for preparation thereof, and superconducting oxide and method for preparation thereof |
| 05/30/2001 | CN1066423C Composite oxide with ability of oxygen absorption and desorption |
| 03/07/2001 | CN1062885C Coloured pigments based on oxide-nitrides, preparation and use thereof |
| 02/14/2001 | EP1037940A4 Block polymer processing for mesostructured inorganic oxide materials |
| 11/21/2000 | US6150299 Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification |
| 09/27/2000 | EP1037940A1 Block polymer processing for mesostructured inorganic oxide materials |
| 09/26/2000 | US6123907 Method and apparatus for performing continuous hydrothermal synthesis |
| 05/25/2000 | WO2000029330A1 Thin hafnium oxide film and method for depositing same |
| 03/28/2000 | CA2194058C Amorphous microporous oxidic solids, process for producing them and their use |
| 03/02/2000 | WO1999037705A9 Block polymer processing for mesostructured inorganic oxide materials |
| 01/25/2000 | US6017629 Amorphous microporous oxidic solids, process for producing them and their use |
| 01/19/2000 | CN1048473C Process for the synthesis of crystalline ceramic powders of perovskite compounds |
| 12/15/1999 | EP0963951A1 Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification |
| 08/31/1999 | US5945370 Composite oxide having oxygen absorbing and desorbing capability and method for preparing the same |
| 07/29/1999 | WO1999037705A1 Block polymer processing for mesostructured inorganic oxide materials |
| 07/19/1999 | CA2224090A1 Zirconium and hafnium separation in sulfate solutions using continuous ion exchange chromatography |
| 06/08/1999 | US5910298 Method of and apparatus for performing continuous hydrothermal synthesis |
| 05/04/1999 | US5900223 Process for the synthesis of crystalline powders of perovskite compounds |
| 11/03/1998 | US5830242 Using fluoride complexing agent in aqueous solution |
| 09/30/1998 | CN1194625A Composite oxide having oxygen absorption and release capabilities and process for preparing the same |
| 06/16/1998 | US5766336 Colored pigments based on oxide-nitrides, the preparation and use thereof |
| 06/02/1998 | CA1339889C Process for preparing a metal (zirconium, hafnium, tinanium) oxide fine power with specific surface or a predetermined particle size |
| 05/20/1998 | EP0842900A1 Composite oxide having oxygen absorption and release capabilities and process for preparing the same |
| 04/01/1998 | EP0687246B1 Process for producing stabilised hafnium oxide powder or a hafnium oxide-containing powder |
| 01/13/1998 | US5707599 Process for purifying tantalum oxide and other metal oxides |
| 10/16/1997 | WO1997037933A1 Composite oxide having oxygen absorption and release capabilities and process for preparing the same |
| 07/16/1997 | EP0783921A2 Method of and apparatus for performing continuous hydrothermal synthesis |
| 05/28/1997 | CN1150789A Process for preparing precipitate of metal oxide |
| 04/16/1997 | EP0767757A1 Amorphous microporous oxidic solids, process for producing them and their use |
| 04/09/1997 | EP0767141A1 Process for preparing precipitate of metal oxide |
| 04/08/1997 | US5618502 Zirconium and hafnium separation in sulfate solutions using continuous ion exchange chromatography |
| 02/06/1997 | WO1997003743A1 Zirconium and hafnium separation in sulfate solutions using continuous ion exchange chromatography |
| 12/10/1996 | US5582785 Changing valency of cerium in oxide from 4 to 3 |
| 11/05/1996 | US5571492 Composite oxide having oxygen absorbing and desorbing capability |
| 10/23/1996 | CN1133821A Method for preparing composite oxide having oxygen absorbing and desorbing capability |
| 10/23/1996 | CN1133820A Composite oxide having oxygen absorbing and desorbing capability and method for preparing same |
| 10/16/1996 | CN1133202A Composite oxide with ability of oxygen absorption and desorption |
| 09/19/1996 | WO1996028385A1 Process for preparing precipitate of metal oxide |
| 09/10/1996 | US5554571 Barium titanium zirconium oxides |
| 05/08/1996 | CN1121944A Coloured pigments based on oxide-nitrides, the preparation and use thereof |
| 05/01/1996 | EP0709351A1 Composite oxide having oxygen absorbing and desorbing capability |
| 04/24/1996 | EP0708066A1 Method for preparing composite oxide having oxygen absorbing and desorbing capability |
| 04/17/1996 | EP0706980A1 Composite oxide having oxygen absorbing and desorbing capability and method for preparing same |
| 04/10/1996 | EP0705804A1 Production of dielectric ceramic material powder |
| 02/21/1996 | EP0697373A1 Oxynitride-based coloured pigments and process for their preparation |
| 02/13/1996 | CA2085927C Phosphor composition and x-ray intensifying screen exhibiting peak emission in the ultraviolet |
| 01/11/1996 | WO1996000697A1 Amorphous microporous oxidic solids, process for producing them and their use |
| 01/04/1996 | DE4422715A1 Amorphe, mikroporöse oxidische Feststoffe, Verfahren zur Herstellung derselben und deren Verwendung Amorphous, micro-porous oxidic solids, methods for making them and their use |
| 12/20/1995 | EP0687246A1 Process for producing stabilised hafnium oxide powder or a hafnium oxide-containing powder |
| 09/12/1995 | CA1336944C Process and device for the introduction of zirconium tetrachloride, of hafnium tetrachloride and mixtures thereof in a distillation column for the continuous extraction, under pressure, of the said chlorides |
| 06/20/1995 | US5425927 Hafnium dioxide purification |
| 04/19/1995 | CN1101634A Process for the synthesis of crystalline ceramic powders of perovskite compounds |
| 03/14/1995 | US5397554 Process of hydrolyzing a group IVB metal chlorides |
| 03/08/1995 | EP0641740A1 Process for the synthesis of crystalline ceramic powders of perovskite compounds |
| 01/03/1995 | CA1333781C Process for separation of hafnium tetrachloride from zirconium tetrachloride |
| 12/27/1994 | US5376309 Boride materials for electronic elements and method of preparing the same |
| 06/09/1994 | WO1994012435A1 Process for making solutions containing basic zirconium and hafnium chlorides |
| 05/11/1994 | WO1994010090A1 Process for producing stabilised hafnium oxide powder or a hafnium oxide-containing powder |
| 05/05/1994 | DE4237272A1 Verfahren zur Herstellung von stabilisiertem Hafniumoxidpulver oder Hafniumoxid enthaltendem Pulver A process for the preparation of stabilized hafnium oxide powder or hafnium-containing |
| 04/19/1994 | US5304537 M-Tl-Ba-Cu-O high temperature superconductors wherein M is selected from the group consisting of Ti, Zr and Hf |
| 03/16/1994 | EP0587417A2 Boride materials for electronic elements and method of preparing the same |
| 01/25/1994 | CA1326348C Nuclear fuel pellet production process, including production and use of flowable and sinterable powders obtained directly by peroxide deposits |
| 11/09/1993 | CA1324106C Process of separation of hafnium from zirconium by molten salt electrolysis |
| 10/27/1993 | EP0395667B1 Continuous process for production of fine particulate ceramics |
| 09/01/1993 | EP0316390B1 Method for producing a fine powder of metal oxide (zirconium, hafnium, titanium) having a specific surface or a predetermined grain size |
| 07/21/1993 | EP0552116A2 Phosphor composition and X-ray intensifying screen exhibiting peak emission in the ultraviolet |
| 05/19/1993 | CN1020674C Method of introduction of zirconium tetrachloride hafnium tetrachloride and mixture of them into distilling column for continuous extraction of said chlorides under pressure |
| 12/22/1992 | US5173611 Phosphor composition and X-ray intensifying screen exhibiting peak emission in the ultraviolet |
| 12/15/1992 | US5171549 Process for decreasing the level of impurities in zirconium chloride, titanium chloride and hafnium chloride |
| 07/21/1992 | US5132016 Solvent prestripping in a zr/hf separation liquid-liquid extraction (llx) circuit |
| 07/15/1992 | CN1017421B Barium titanate coforms |
| 06/10/1992 | CN1016962B Doped batio3 based dielectric composition powder |