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US2965472A
Expired / Lapsed
US
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Manufacture of triple superphosphate
Assignee: Phillips Petroleum Co
•
Filing: 1957-06-06
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Granted: 1960-12-20
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Edward E Huxley
- 👤 William R Pullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:36
CPC Classifications
C; C05; C05B; C05B19/00; C05B19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1957314A
Cited
US2232145A
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US2228704A
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US2287759A
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US2448126A
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US2631084A
Cited
US2680680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |