US3419349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of catenarily condensed ammonium-phosphates and ammonium-metal-phosphates
Assignee: Hoechst AG Werk Kalle Albert
•
Filing: 1965-01-15
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Granted: 1968-12-31
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Rohlfs Hans Adolf
- 👤 Schmidt Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:26
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45; C01B25/451; C01B25/28; C01B25/38; C01B25/40; C01B25/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3022153A
Cited
US3241946A
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 |