US3399986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel ammonium polyphosphates and methods for preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1965-08-31
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Granted: 1968-09-03
•
Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 Wiegman Lenore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:20
CPC Classifications
C; C05; C05B; C05B13/00; C05B13/06; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/28; C01B25/38; C01B25/40; C01B25/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |