US3394155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of surface-active agents
Assignee: Lever Brothers Co
•
Filing: 1964-05-22
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Granted: 1968-07-23
•
Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Cahn Arno
- 👤 Lemaire Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/22; C07C303/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3029264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |