US2524341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonium sulfate production
Assignee: ExxonMobil Oil Corp
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Filing: 1948-09-10
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Granted: 1950-10-03
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Expires: 1968-09-10
Abstract
No abstract record available.
Inventors
- 👤 Harold D Chapman
- 👤 William I Denton
- 👤 Richard B Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:46
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/24; C01C1/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE PROCESS FOR PREPARING SOLID, SUBSTANTIALLY DRY AND FREE-FLOWING AMMONIUM SULFATE, WHICH COMPRISES: SPRAYING SULFURIC ACID HAVING A CONCENTRATION FROM ABOUT 80 PER CENT TO ABOUT 100 PER CENT INTO AN ATMOSPHERE OF AMMONIA COMPRISING A QUANTITY OF AMMONIA IN EXCESS OF THE STOICHIOMETRIC QUANTITY FOR REACTION WITH SAID ACID TO FORM AMMONIUM SULFATE, AT A TEMPERATURE BETWEEN ABOUT 220*F AND ABOUT 330*F., AND SPRAYING ON SAID AMMONIUM SULFATE AS IT FORMS A LIQUID COOLANT HAVING A BOILING POINT NOT GREATER THAN ABOUT 240*F., THE QUANTITY OF SAID COOLANT BEING
Claim 2
Dependent Claim
90 words
THE PROCESS FOR PREPARING SOLID, SUBSTANTIALLY DRY AND FREE-FLOWING AMMONIUM SULFATE, WHICH COMPRISES: SPRAYING SULFURIC ACID HAVING A CONCENTRATION FROM ABOUT 80 PER CENT TO ABOUT 100 PER CENT INTO AN ATMOSPHERE OF AMMONIA COMPRISING A QUANTITY OF AMMONIA IN EXCESS OF THE STOICHIOMETRIC QUANTITY FOR REACTION WITH SAID ACID TO FORM AMMONIUM SULFATE, AT A TEMPERATURE BETWEEN ABOUT 220*F AND ABOUT 330*F., AND SPRAYING ON SAID AMMONIUM SULFATE AS IT FORMS A LIQUID COOLANT HAVING A BOILING POINT NOT GREATER THAN ABOUT 240*F., THE QUANTITY OF SAID COOLANT BEING
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) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |