Patent US3015552A successfully refreshed from Google Patents.
US3015552A
Expired / Lapsed
US
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Process for preparing stable liquid fertilizer and product thereof
Assignee: Tennessee Valley Authority
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Filing: 1958-06-09
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Granted: 1962-01-02
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Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Marcus M Striplin
- 👤 John M Stinson
- 👤 James A Wilbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:53
CPC Classifications
C; C05; C05B; C05B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR THE MANUFACTURE OF LIQUID FERTILIZER WHICH COMPRISES THE STEPS OF INTRODUCING AMMONIUM SALT OF UNHYDROLYZED SUPERPHOSHORIC ACID INTO A MIXING VESSEL IN SUCH QUANTITIES AS TO SUPPLY AS AMMONIUM SALTS OF POLYPHOSPHORIC ACIDS ABOUT 5 TO 25 PERCENT OF THE TOTAL P2O5 CONTENT OF A LIQUID FERTILIZER TO BE PRODUCED, SUCH QUANTITY OF SALTS BEING SUFFICIENT TO MAINTAIN IN SOLUTION THE CONGENERIC IMPURITIES OF A LATER-MENTIONED WET-PROCESS PHOSPHORIC ACID; SIMULTANEOUSLY INTRODUCING WET-PROCESS PHOSPHORIC ACID AND AMMONIA INTO SAID MIXING VESSEL
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE MANUFACTURE OF LIQUID FERTILIZER WHICH COMPRISES THE STEPS OF INTRODUCING AMMONIUM SALT OF UNHYDROLYZED SUPERPHOSHORIC ACID INTO A MIXING VESSEL IN SUCH QUANTITIES AS TO SUPPLY AS AMMONIUM SALTS OF POLYPHOSPHORIC ACIDS ABOUT 5 TO 25 PERCENT OF THE TOTAL P2O5 CONTENT OF A LIQUID FERTILIZER TO BE PRODUCED, SUCH QUANTITY OF SALTS BEING SUFFICIENT TO MAINTAIN IN SOLUTION THE CONGENERIC IMPURITIES OF A LATER-MENTIONED WET-PROCESS PHOSPHORIC ACID; SIMULTANEOUSLY INTRODUCING WET-PROCESS PHOSPHORIC ACID AND AMMONIA INTO SAID MIXING VESSEL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |