US2875848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation of sulfur dioxide
Assignee: Individual
•
Filing: 1956-07-12
•
Granted: 1959-03-03
•
Expires: 1976-07-12
Abstract
No abstract record available.
Inventors
- 👤 Cathala Marie Edouard Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:54
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF EXTRACTING PURE, SULFUR DIOXIDE FROM A GASEOUS MIXTURE CONSISTING OF SULFUR DIOXIDE, NITROGEN. OXYGEN, AND CARBON DIOXIDE, WHICH COMPRISES COACTING SAID MIXTURE WITH A STREAM OF CHLORO-SULFONIC ACID, THEREBY DISSOLVING IN SAID STREAM AT LEAST PARTIALLY THE SULFUR
Claim 2
Independent Claim
41 words
A METHOD OF EXTRACTING PURE, SULFUR DIOXIDE FROM A GASEOUS MIXTURE CONSISTING OF SULFUR DIOXIDE, NITROGEN. OXYGEN, AND CARBON DIOXIDE, WHICH COMPRISES COACTING SAID MIXTURE WITH A STREAM OF CHLORO-SULFONIC ACID, THEREBY DISSOLVING IN SAID STREAM AT LEAST PARTIALLY THE SULFUR
References Cited (Backward Citations)
US1046915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |