US2480694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing sylvite crystals from caking
Assignee: International Minerals and Chemical Corp
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Filing: 1946-09-12
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Granted: 1949-08-30
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Expires: 1966-09-12
Abstract
No abstract record available.
Inventors
- 👤 George E Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:38
CPC Classifications
C; C05; C05D; C05D1/00; C05D1/005; B; B01; B01J; B01J2/00; B01J2/30; C01; C01D; C01D3/00; C01D3/26
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) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |