Patent US3424560A successfully refreshed from Google Patents.
US3424560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the optimization of chemical reaction units
Assignee: Societe Nationale des Petroles dAquitaine SA
•
Filing: 1966-06-21
•
Granted: 1969-01-28
•
Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Michel Carmassi
- 👤 Georges Vandesande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0033; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8612; B01D53/8615; C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0452; G; G05; G05B; G05B13/00; G05B13/02; G05B13/0205; G05B13/021; G05B13/0215; G05D; G05D11/00; G05D11/02; G05D11/03; Y; Y10; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1923865A
Cited
US2813010A
Cited
US3026184A
Cited
US3138436A
Cited
US3338664A
Cited
US3312529A
Cited
US3321280A
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 |