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Patent US3117133A successfully refreshed from Google Patents.
US3117133A
Expired / Lapsed
US
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Process for the production of sultones
Assignee: Henkel AG and Co KGaA
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Filing: 1960-10-19
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Granted: 1964-01-07
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Expires: 1980-10-19
Abstract
No abstract record available.
Inventors
- 👤 Kethe Heinz
- 👤 Gardenier Karl-Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:24
CPC Classifications
C; C07; C07D; C07D327/00; C07D327/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
A PROCESS FOR THE PRODUCTION OF SULTONES, WHICH COMPRISES HEATING A DRY COMPOUND, IN THE ABSENCE OF SOLVENTS, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI SALTS AND AMMONIUM SALTS OF SULFONIC ACIDS HAVING THE FORMULA
References Cited (Backward Citations)
US2799702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |