Patent US3171733A successfully refreshed from Google Patents.
US3171733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-analysis ammonium polyphosphate fertilizer
Assignee: Tennessee Valley Authority
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Filing: 1961-09-08
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Granted: 1965-03-02
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Travis P Hignett
- 👤 John G Getsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:25
CPC Classifications
C; C05; C05B; C05B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A NEW COMPOSITION OF MATTER CONTAINING A TOTAL PLANT FOOD CONTENT (N+P2O5) IN THE RANGE FRM ABOUT 73 PERCENT TO ABOUT 82 PERCENT BY WEIGHT AND CONSISTING ESSENTIALLY OF A SOLID MIXTURE OF SOLID WATER-SOLUBLE SALTS OF AT LEAST ABOUT 50 PERCENT MONOAMMONIUM ORTHOPHOSPHATE, NH4H2PO4; AT LEAST ABOUT 38 PERCENT TETRAAMMONIUM
Claim 2
Dependent Claim
51 words
A NEW COMPOSITION OF MATTER CONTAINING A TOTAL PLANT FOOD CONTENT (N+P2O5) IN THE RANGE FRM ABOUT 73 PERCENT TO ABOUT 82 PERCENT BY WEIGHT AND CONSISTING ESSENTIALLY OF A SOLID MIXTURE OF SOLID WATER-SOLUBLE SALTS OF AT LEAST ABOUT 50 PERCENT MONOAMMONIUM ORTHOPHOSPHATE, NH4H2PO4; AT LEAST ABOUT 38 PERCENT TETRAAMMONIUM
References Cited (Backward Citations)
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US1103115A
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US1282170A
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US2105446A
Cited
GB495192A
Cited
US2288418A
Cited
US3005696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |