US2701193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of fertilizers
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1952-03-19
•
Granted: 1955-02-01
•
Expires: 1972-03-19
Abstract
No abstract record available.
Inventors
- 👤 Heudier Charles
- 👤 Staub Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:48
CPC Classifications
C; C05; C05B; C05B11/00; C05B11/04; C05B11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF PREPARING FERTILIZER FROM AN ACIDI FICATION PRODUCT ANALYZING ABOUT 14.5% P2O5 7.25% NITRIC NITROGEN 12.7% CAO AND 35% H2O THAT COMPRISES AMMONIATING THE SAID PRODUCT BY ADMITTING GASEOUS AMMONIA THERETO, AT A RATE THAT EQUALS ABOUT 300 K./HR. AT THE START AND 150 KG./HR. TOWARD THE END OF THE OPERATION, AND AERATING THE MASS WITH AIR AT A RATE OF ABOUT 1.3 TO 1.4 TIMES THE AMOUNT OF AMMONIA, THE AMOUNT OF AIR ADMITTED BEING VARIED TO KEEP THE TEMPERATURE OF THE REACTION MASS SLIGHTLY BELOW THE BOILING POINT.
Claim 2
Independent Claim
92 words
THE METHOD OF PREPARING FERTILIZER FROM AN ACIDI FICATION PRODUCT ANALYZING ABOUT 14.5% P2O5 7.25% NITRIC NITROGEN 12.7% CAO AND 35% H2O THAT COMPRISES AMMONIATING THE SAID PRODUCT BY ADMITTING GASEOUS AMMONIA THERETO, AT A RATE THAT EQUALS ABOUT 300 K./HR. AT THE START AND 150 KG./HR. TOWARD THE END OF THE OPERATION, AND AERATING THE MASS WITH AIR AT A RATE OF ABOUT 1.3 TO 1.4 TIMES THE AMOUNT OF AMMONIA, THE AMOUNT OF AIR ADMITTED BEING VARIED TO KEEP THE TEMPERATURE OF THE REACTION MASS SLIGHTLY BELOW THE BOILING POINT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |