Patent US3097925A successfully refreshed from Google Patents.
US3097925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering sulphur
Assignee: Atlantic Richfield Co
•
Filing: 1958-04-17
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Granted: 1963-07-16
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Expires: 1978-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul M Pitts
- 👤 Robert W Rieve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:15
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/1485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1847795A
Cited
US1854847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |