Process for treating fluorine compound-containing gas

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Halogenous component

Reexamination Certificate

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C423S245300, C588S317000, C588S406000

Reexamination Certificate

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10679297

ABSTRACT:
A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°–800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.

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Explanation of Circumstances Concerning Accelerated Examination.
Japanese Office Action.
European Search Report.
Declaration of Interference between U.S. Appl. No. 10/676,013 and U.S. Patent No. 6,673,326, Patent Interference 105,402 (McK) Technology Center 1700, Dec. 13, 2005.
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Kanno's Designation of Lead and Backup Counsel, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 22, 2005.
Kanno's Notice of Related Proceedings, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 22, 2005.
Kanno's Designation of the Real Party-In-Interest, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 22, 2005.
Kanno's Request for File Copies, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 22, 2005.
Rossin's Request for File Copies, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 27, 2005.
Rossin's Designation of the Real Party-In-Interest, Patent Interference No. 105,402, (McK), Technology Center 1700, Dec. 27, 2005.
Rossin's Notice of Related Proceedings, Patent Interference No. 105,402 (McK), Technology Center 1700, Dec. 27, 2005.
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Kanno's Submission of Japanese Priority Documents, Patent Interference No. 105,402 (McK), Technology Center 1700, Jan. 12, 2006.
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Memorandum Opinion and Order, Patent Interference No. 105,402 (McK), Technology Center 1700, Jan. 18, 2006.
Order - - New Standing Order, Patent Interference No. 105,402 (McK), Technology Center 1700, Jan. 18, 2006.
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Preliminary Motions - Default times for taking action.
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Kanno Substantive Motion 1 (for accorded benefit of Japanese patent applications), Patent Interference No. 105,402 (McK), Technology Center 1700, Apr. 21, 2006.
Kanno Substantive Motion 2 (to declare U.S. Patent No. 6,673,326 unpatentable), Patent Interference No. 105,402 (McK), Technology Center 1700, Apr. 21, 2006.
Kanno Substantive Motion 3 (to substitute Count A for Count 1), Patent Interference No. 105,402 (McK), Technology Center 1700, Apr. 21, 2006.
Kanno Substantive Motion 4 (to add Count B), Patent Interference No. 105,402 (McK), Technology Center 1700, Apr. 21, 2006.
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Rossin's Substantive Motion 6 (for ju

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