US2477038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen fluoride sludge decomposition process
Assignee: Universal Oil Products Co
•
Filing: 1945-12-28
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Granted: 1949-07-26
•
Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:39
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/904; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |