US2653138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tellurium catalysts
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-12-07
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Granted: 1953-09-22
•
Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 William R Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:21
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
41 words
A NEW CATALYST CONSISTING ESSENTIALLY OF ABOUT 1 TO ABOUT 40 MOLE PER CENT OF AN OXIDE OF A METAL OF GROUP VI OF THE PERIODIC TABLE HAVING AN ATOMIC WEIGHT OF AT LEAST ABOUT 96 AND AN OXIDE OF TELLURIUM.
Claim 2
Dependent Claim
41 words
A NEW CATALYST CONSISTING ESSENTIALLY OF ABOUT 1 TO ABOUT 40 MOLE PER CENT OF AN OXIDE OF A METAL OF GROUP VI OF THE PERIODIC TABLE HAVING AN ATOMIC WEIGHT OF AT LEAST ABOUT 96 AND AN OXIDE OF TELLURIUM.
References Cited (Backward Citations)
US1103017A
Cited
GB191513297A
Cited
US2161066A
Cited
US2383711A
Cited
US2530923A
Cited
GB625330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |