| Patents for C01G 33 - Compounds of niobium (1,435) |
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| 06/12/1984 | US4454244 Catalytic smectites by roasting a cluster compound and reaction product of a di- and trivalent metal salt |
| 04/03/1984 | CA1164642A1 Intercalated layered mixed oxides |
| 12/13/1983 | US4420469 Pyrohydrolysis of columbium oxyfluoride to columbium oxide |
| 12/07/1983 | EP0095775A1 Compositions for conductive resistor phases and methods for their preparation including a method for doping tin oxide |
| 04/12/1983 | CA1144376A1 Leaching process for niobium and (or) tantalum minerals |
| 03/15/1983 | US4376709 Ion exchanging |
| 07/13/1982 | US4339544 Oxides of lead, magnesium, niobium, zinc and titanium; capacitors |
| 05/19/1982 | EP0051999A1 Intercalated layered mixed oxides |
| 04/27/1982 | CA1122416A1 Method of extracting columbium-tantalum values from pyrochlore ores |
| 01/19/1982 | CA1116409A1 Process for recovery of niobium values for use in preparing niobium alloy products |
| 01/05/1982 | US4309389 Pyrohydrolysis of fluoro acid complexes |
| 12/09/1981 | EP0041459A1 Process for the lixiviation of a niobium and/or tantalum ore containing calcium as main impurity |
| 02/10/1981 | CA1095572A1 Electrothermal fluidized bed furnace |
| 01/27/1981 | CA1094291A1 Commercial production of transition metal sulfides from their halides |
| 11/18/1980 | US4234558 From lead oxide and niobium oxide, solvent of alkali chloride |
| 11/18/1980 | US4234557 From niobium pentoxide and alkali oxides, alkali chloride solvent |
| 11/18/1980 | US4234436 With an oxide of lead or cadmium |
| 06/17/1980 | US4208394 Reaction with carbon disulfide |
| 06/17/1980 | CA1079488A1 Treatment method of raw materials containing titanium |
| 04/08/1980 | US4197161 Process for the recovery of catalysts in the epoxidation and hydroxylation of olefinic compounds |
| 04/08/1980 | US4196963 Method for eliminating Li2 O out-diffusion in LiNbO3 and LiTaO3 waveguide structures |
| 03/11/1980 | CA1073566A1 Process for treating an acid waste liquid |
| 01/22/1980 | CA1070083A1 Lewis acid-fluorine compounds of carbon |
| 01/08/1980 | US4182744 Extracting columbium-tantalum values from pyrochlore ores |
| 11/27/1979 | CA1067061A1 Recovery of catalysts in a fluidized bed |
| 08/28/1979 | US4166098 Solvent extraction |
| 08/14/1979 | US4164417 Aluminothermic reduction, alloying |
| 06/19/1979 | US4158695 Electrothermal fluidized bed furnace |
| 12/05/1978 | US4128499 Lewis acid-fluorine compounds of carbon |
| 11/21/1978 | CA1042773A1 Method of etching a surface of a substrate comprising linbo3 |
| 08/22/1978 | US4108970 Process for producing lithium niobate and lithium tantalate |
| 04/04/1978 | US4082832 Treatment of raw materials containing titanium |
| 01/04/1977 | US4001127 Process of preparing single crystals of strontium barium niobate |
| 08/24/1976 | US3976475 Or niobium from acid solutions thereofamine, extraction, hydrogen peroxide |
| 08/17/1976 | US3975495 Metals recovery from hydrochloric acid solutions |