US3424697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing catalysts for the isomerization of lower saturated hydrocarbons
Assignee: SnamProgetti SpA
•
Filing: 1965-10-19
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Granted: 1969-01-28
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Bruno Notari
- 👤 Giovanni Manara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:19
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2724; B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13; C07C5/2767; C07C5/277; C07C5/2791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3248320A
Cited
FR1322457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |