US3537814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonium polyphosphate produced at atmospheric pressure
Assignee: Tennessee Valley Authority
•
Filing: 1968-10-02
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Granted: 1970-11-03
•
Expires: 1988-10-02
Abstract
No abstract record available.
Inventors
- 👤 Thad D Farr
- 👤 Henry K Walters Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:25
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)
US3243279A
Cited
US3382059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |