US3141735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying liquid sulfur dioxide with bauxite
Assignee: Stauffer Chemical Co
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Filing: 1962-05-21
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Granted: 1964-07-21
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Young David George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:18
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/82; C01B17/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR REMOVING SULFURIC ACID PRESENT AS AN IMPURITY IN LIQUID SULFUR DIOXIDE, SAID PROCESS COMPRISING CONTACTING THE SULFUR DIOXIDE WITH GRANULAR, CALCINED BAUXITE.
Claim 2
Dependent Claim
25 words
A PROCESS FOR REMOVING SULFURIC ACID PRESENT AS AN IMPURITY IN LIQUID SULFUR DIOXIDE, SAID PROCESS COMPRISING CONTACTING THE SULFUR DIOXIDE WITH GRANULAR, CALCINED BAUXITE.
References Cited (Backward Citations)
US2204543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |