US2381041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of saturated hydrocarbons
Assignee: Shell Development Co
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Filing: 1939-11-21
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Granted: 1945-08-07
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Expires: 1959-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jong Johan Jacob De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:26
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; C10G29/205; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2/86; C07C2/868; C07C303/00; C07C303/24; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C10G2400/00; C10G2400/02
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) | 1948-08-06 | 1949-02-05 | 1949-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-06 | 1953-02-05 | 1953-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-06 | 1957-02-05 | 1957-08-07 | $7700.00 | Window Closed / Lapsed |