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Class Information
Number: 423/59
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group vib metal (cr, mo, or w) > Volatizing
Description: Processes including the step of causing a normally solid or liquid substance in either elemental or compound form to be changed into a gas or a vapor; see Glossary.










Sub-classes under this class:

Class Number Class Name Patents
423/60 As a compound containing chlorine 17


Patents under this class:

Patent Number Title Of Patent Date Issued
8268267 Process for the extraction of specific transition metals Sep. 18, 2012
8163258 Pyrometallurgical process for treating molybdenite containing lead sulfide Apr. 24, 2012
7854908 Method and apparatus for the recovery of molybdenum from spent catalysts Dec. 21, 2010
7622098 Method for producing nano-particles of metal oxide Nov. 24, 2009
7118724 Method of producing nanophase WC powder by vapor phase reaction Oct. 10, 2006
7115240 Method of producing nanophase WC-based powder by vapor phase reaction at atmospheric pressure Oct. 3, 2006
6723876 Process for the integrated preparation of ammonia and urea Apr. 20, 2004
6375908 Process and apparatus for recovery of raw materials from wastes residues Apr. 23, 2002
5972301 Minimizing emission of hexavalent chromium from combustion sources Oct. 26, 1999
5802439 Method for the production of .sup.99m Tc compositions from .sup.99 Mo-containing materials Sep. 1, 1998
5802438 Method for generating a crystalline .sup.99 MoO.sub.3 product and the isolation .sup.99m Tc compositions therefrom Sep. 1, 1998
5776848 Molybdenum epoxidation catalyst recovery Jul. 7, 1998
5585077 Molybdenum epoxidation catalyst recovery Dec. 17, 1996
5512264 Finely divided blue molybdenum oxide Apr. 30, 1996
5328668 Synthesis of semiconductor grade tungsten hexafluoride Jul. 12, 1994
5298227 Process for separating vaporous heavy metal compounds from a carrier gas and apparatus for carrying out the process Mar. 29, 1994
5259866 Method for producing high-purity metallic chromium Nov. 9, 1993
5234679 Method of refining tungsten hexafluoride containing molybdenum hexafluoride as an impurity Aug. 10, 1993
5223234 Method for producing molybdenum trioxide (MOO.sub.3) from raw materials that contain MOS.sub.2 Jun. 29, 1993
5104445 Process for recovering metals from refractory ores Apr. 14, 1992
4981658 Process for the fine purification of fissionable molybdenum Jan. 1, 1991
4842832 Ultra-fine spherical particles of metal oxide and a method for the preparation thereof Jun. 27, 1989
4687647 Conversion of molybdenite to molybdenum dioxide using petroleum or coal tar pitches Aug. 18, 1987
4629606 Recovery of tungsten compounds Dec. 16, 1986
4608235 Recovery of cobalt Aug. 26, 1986
4604265 Recovery of tungsten and rhenium Aug. 5, 1986
4576636 Process for beneficiating oxidic ores Mar. 18, 1986
4560539 Removal of ammonia from sodium tungstate solutions Dec. 24, 1985
4555387 Flash roasting of molybdenum sulfide concentrates in a slagging reactor Nov. 26, 1985
4551312 Process for converting molybdenite to molybdenum oxide Nov. 5, 1985
4551313 Flash sublimation and purification of molybdenum oxide Nov. 5, 1985
4519987 Treatment of oxidic materials May. 28, 1985
4455283 Molybdenum epoxidation catalyst recovery Jun. 19, 1984
4421727 NF.sub.4.sup.+ WF.sub.7.sup.- and NF.sub.4.sup.+ UF.sub.7.sup.- and methods of preparation Dec. 20, 1983
4226836 Method for separating molybdenum values from sea nodules Oct. 7, 1980
4123498 Process for separating fission product molybdenum from an irradiated target material Oct. 31, 1978
4034969 Oxidation roasting of ore Jul. 12, 1977
4017583 Volitilization process for separation of molybdenum-99 from irradiated uranium Apr. 12, 1977
3997465 Dehalogenation process Dec. 14, 1976
3937794 Method of manufacturing fine powders of metal sulfide Feb. 10, 1976











 
 
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