US3057700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphoric acid process
Assignee: Chemical Construction Corp
•
Filing: 1959-10-12
•
Granted: 1962-10-09
•
Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 James A Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/20; Y; Y10; Y10S; Y10S159/00; Y10S159/19; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
APPARATUS FOR PRODUCING PHOSPHORIC ACID FROM PHOSPHORUS COMPRISING A PHOSPHORUS COMBUSTION CHAMBER, A PHOSPHORUS BURNER WITHIN SAID CHAMBER, PHOSPHORUS AND AIR INLET MEANS EXTENDING TO SAID BURNER, LIQUID DISTRIBUTION MEANS WITHIN SAID CHAMBER FOR DIRECTING ABSORBENT LIQUID ONTO THE INNER WALLS OF SAID CHAMBER A DUCT EXTENDING DOWNWARDLY FROM THE BOTTOM OF SAID COMBUSTION CHAMBER, SAID DUCT HAVIN G DOWNWARDLY CONVERGING SIDE WALLS WHEREBY THE CROSS-SECTIONAL AREA OF SAID DUCT DECREASES IN A DOWNWARD DIRECTION, SAID DUCT BEING PROVIDED WITH AN INWARDLY CURVED LOWER TERMINUS, A LIQUID-GAS SEPARATION CONTAINER EXTENDING ABOUT THE LOWER PORTION OF SAID DUCT, GAS REMOVAL MEANS EXTENDING FROM SAID CONTAINER, LIQUID RECYCLE MEANS COMPRISING A LIQUID OUTLET ADJACENT THE BOTTOM OF SAID CONTAINER, A RECYCLE LIQUID COOLER, AND MEANS FOR ADMITTING COOLED RECYCLE LIQUID TO SAID LIQUID DISTRIBUTOR MEANS, AND MEANS ADJACENT THE BOTTOM OF SAID CONTAINER FOR PRODUCT LIQUID REMOVAL.
Claim 2
Dependent Claim
145 words
APPARATUS FOR PRODUCING PHOSPHORIC ACID FROM PHOSPHORUS COMPRISING A PHOSPHORUS COMBUSTION CHAMBER, A PHOSPHORUS BURNER WITHIN SAID CHAMBER, PHOSPHORUS AND AIR INLET MEANS EXTENDING TO SAID BURNER, LIQUID DISTRIBUTION MEANS WITHIN SAID CHAMBER FOR DIRECTING ABSORBENT LIQUID ONTO THE INNER WALLS OF SAID CHAMBER A DUCT EXTENDING DOWNWARDLY FROM THE BOTTOM OF SAID COMBUSTION CHAMBER, SAID DUCT HAVIN G DOWNWARDLY CONVERGING SIDE WALLS WHEREBY THE CROSS-SECTIONAL AREA OF SAID DUCT DECREASES IN A DOWNWARD DIRECTION, SAID DUCT BEING PROVIDED WITH AN INWARDLY CURVED LOWER TERMINUS, A LIQUID-GAS SEPARATION CONTAINER EXTENDING ABOUT THE LOWER PORTION OF SAID DUCT, GAS REMOVAL MEANS EXTENDING FROM SAID CONTAINER, LIQUID RECYCLE MEANS COMPRISING A LIQUID OUTLET ADJACENT THE BOTTOM OF SAID CONTAINER, A RECYCLE LIQUID COOLER, AND MEANS FOR ADMITTING COOLED RECYCLE LIQUID TO SAID LIQUID DISTRIBUTOR MEANS, AND MEANS ADJACENT THE BOTTOM OF SAID CONTAINER FOR PRODUCT LIQUID REMOVAL.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |