Patent US262843A successfully refreshed from Google Patents.
Patent US2474845A successfully refreshed from Google Patents.
US2474845A
Expired / Lapsed
US
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Process for synthesizing hydrocarbons
Assignee: Hydrocarbon Research Inc
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Filing: 1944-09-12
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Granted: 1949-07-05
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Expires: 1964-09-12
Abstract
No abstract record available.
Inventors
- 👤 Frank J Jenny
- 👤 Earl W Riblett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:23
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0455; C07C1/0465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955873A
Cited
US1984380A
Cited
US2318602A
Cited
US2347682A
Cited
US2383636A
Cited
US2406851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |