US3575845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective catalytic conversion
Assignee: Mobil Oil AS
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Filing: 1965-12-13
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Granted: 1971-04-20
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Expires: 1985-12-13
Abstract
Abstract A CHEMICAL REACTION IS CONDUCTED SELECTIVELY WHEREBY A POROUS SOLID CATALYST WHOSE EXTERNAL EXPOSED SURFACE HAS BEEN POISONED WITH AN ORGANIC PHOSPHOROUS COMPOUND IS UTILIZED SUCH THAT ONLY REACTION MOLECULES WHOSE SIZE AND SHAPE PERMIT ENTRY TO THE INTERIOR OF THE CATALYST ARE CONVERTED.
Inventors
- 👤 Joseph N Miale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:35
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |