US3476510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of magnesium - ammonium phosphate-hexahydrate
Assignee: Knapsack AG
•
Filing: 1967-01-03
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Granted: 1969-11-04
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Winfried Kern
- 👤 Joseph Cremer
- 👤 Heinz Harnisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:54
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45; C01B25/451
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126254A
Cited
US3320048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |