US3420857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous production of fatty acid esters of hydroxy sulfonates
Assignee: Lever Brothers Co
•
Filing: 1964-12-11
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Granted: 1969-01-07
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Expires: 1984-12-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick Anthony Holland
- 👤 Gerard Joseph Mccrimlisk
- 👤 William A Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:08
CPC Classifications
C; C07; C07C; C07C309/00; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/126; C11D1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |