US2445112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming so2 by burning sulfur
Assignee: EIDP Inc
•
Filing: 1940-12-28
•
Granted: 1948-07-13
•
Expires: 1960-12-28
Abstract
No abstract record available.
Inventors
- 👤 Worthington T Grace
- 👤 Jr Joseph C Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:12
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1595196A
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US1714657A
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US1657545A
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US1928099A
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US1812795A
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US2071534A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |