Patent EP0009376A2 successfully refreshed from Google Patents.
US2434833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for condensation of hydrocarbons by contact with concentrated sulfuric acid in silica gel
Assignee: Atlantic Richfield Co
•
Filing: 1944-05-27
•
Granted: 1948-01-20
•
Expires: 1964-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frank G Ciapetta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
B; B01; B01J; B01J27/00; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/16; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2/64; C07C2/66; C07C2/70; C10; C10G; C10G11/00; C10G11/02; C10G11/06; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1933091A
Cited
US2131196A
Cited
US2181640A
Cited
US2293353A
Cited
US2258368A
Cited
US2384311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |