US3419379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating fertilizer particles with magnesium and calcium phosphates and sulfates and the resulting product
Assignee: Commercial Solvents Corp
•
Filing: 1964-09-18
•
Granted: 1968-12-31
•
Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 Charles D Goodale
- 👤 John A Frump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:48
CPC Classifications
C; C05; C05C; C05C9/00; C05C9/005; C05C1/00; C05C1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1631903A
Cited
US2600253A
Cited
US2965471A
Cited
US3070435A
Cited
US3240586A
Cited
US3149956A
Cited
US3291595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |