US3393147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts having improved thermal stability and method of preparing the same
Assignee: Mobil Oil AS
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Filing: 1966-03-02
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Granted: 1968-07-16
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Expires: 1986-03-02
Abstract
No abstract record available.
Inventors
- 👤 Francis G Dwyer
- 👤 William A Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:11
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J21/00; B01J21/16; B01J21/20; B01J29/08; B01J29/085; B01J29/087; B01J2229/00; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |