US3115501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sultone manufacture
Assignee: Shell USA Inc
•
Filing: 1961-05-05
•
Granted: 1963-12-24
•
Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Harry De V Finch
- 👤 George W Hearne
- 👤 John A Whitcombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:35
CPC Classifications
C; C07; C07D; C07D327/00; C07D327/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A PROCESS FOR PREPARING SULTONES FROM CORRESPONDING HYDROXYALKANE SULFONIC ACIDS OF FROM 3 TO 8 CARBON ATOMS AND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
22 words
A PROCESS FOR PREPARING SULTONES FROM CORRESPONDING HYDROXYALKANE SULFONIC ACIDS OF FROM 3 TO 8 CARBON ATOMS AND REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |