Patent US2648638A successfully refreshed from Google Patents.
US2648638A
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Method for preparing a tellurium oxide-containing catalyst
Assignee: ExxonMobil Oil Corp
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Filing: 1950-01-19
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Granted: 1953-08-11
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Expires: 1970-01-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:28
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B; B01; B01J; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; C07C45/36; C07C45/37; C07C45/38; C07C45/39; C07C45/40; C07C46/00; C07C46/02; C07C46/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD FOR PREPARING A TELLURIUM OXIDE-CONTAINING CATALYST, WHICH COMPRISES EFFECTING CONTACT AT A TEMPERATURE IN THE APPROXIMATE RANGE OF 200* C. TO 550* C. BETWEEN METALLIC TELLURIUM AND A MIXTURE OF AIR AND AN ORGANIC COMPOUND HAVING AT LEAST ONE RADICAL SELECTED FROM THE GROUP CONSISTING OF METHYL AND METHYLENE RADICALS, WHICH RADICAL IS CHARACTERIZED BY BEING ADJACENT TO A CENTER OF UNSATURATION, THE VOLUME RATIO OF SAID COMPOUND TO AIR BEING BETWEEN ABOUT 1:1 AND ABOUT 1:9, SAID CONTACT BEING MADE WITH AN AMOUNT OF SAID MIXTURE AND FOR A TIME SUFFICIENT TO OXIDIZE AT LEAST 50 PER CENT OF SAID METALLIC TELLURIUM TO AN OXIDE OF TELLURIUM.
Claim 2
Independent Claim
110 words
THE METHOD FOR PREPARING A TELLURIUM OXIDE-CONTAINING CATALYST, WHICH COMPRISES EFFECTING CONTACT AT A TEMPERATURE IN THE APPROXIMATE RANGE OF 200* C. TO 550* C. BETWEEN METALLIC TELLURIUM AND A MIXTURE OF AIR AND AN ORGANIC COMPOUND HAVING AT LEAST ONE RADICAL SELECTED FROM THE GROUP CONSISTING OF METHYL AND METHYLENE RADICALS, WHICH RADICAL IS CHARACTERIZED BY BEING ADJACENT TO A CENTER OF UNSATURATION, THE VOLUME RATIO OF SAID COMPOUND TO AIR BEING BETWEEN ABOUT 1:1 AND ABOUT 1:9, SAID CONTACT BEING MADE WITH AN AMOUNT OF SAID MIXTURE AND FOR A TIME SUFFICIENT TO OXIDIZE AT LEAST 50 PER CENT OF SAID METALLIC TELLURIUM TO AN OXIDE OF TELLURIUM.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |