US2906372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfuric acid mist removal
Assignee: Union Carbide Corp
•
Filing: 1957-01-31
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Granted: 1959-09-29
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Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Carl L Leonard
- 👤 Carl R Schneider
- 👤 James K Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:20
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
METHOD OF REMOVING SULFURIC ACID MIST FROM A GASEOUS MIXTURE CONTAINING THE SAME COMPRISING PASSING SAID MIST-CONTAINING GASEOUS MIXTURE THROUGH POROUS MINERAL SILICA PLATES COVERED WITH A FREE LEVEL OF SULFURIC ACID OF 60 TO 72% CONCENTRATION MAINTAINED AT A TEMPERATURE BETWEEN 110*C. TO 130* C.
Claim 2
Dependent Claim
46 words
METHOD OF REMOVING SULFURIC ACID MIST FROM A GASEOUS MIXTURE CONTAINING THE SAME COMPRISING PASSING SAID MIST-CONTAINING GASEOUS MIXTURE THROUGH POROUS MINERAL SILICA PLATES COVERED WITH A FREE LEVEL OF SULFURIC ACID OF 60 TO 72% CONCENTRATION MAINTAINED AT A TEMPERATURE BETWEEN 110*C. TO 130* C.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |