US3657146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soap production
Assignee: Lever Brothers Co
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Filing: 1968-11-01
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Granted: 1972-04-18
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Expires: 1988-11-01
Abstract
Abstract A PROCESS FOR DIRECT PRODUCTION OF A SOAP OF WATER CONTENT NOT IN EXCESS OF 25% FOR HOUSEHOLD AND TOILET USES, BY SAPONIFICATION AT 120-180*C. UNDER 2-10 ATM. OF A FATTY ACID, NATURAL OR SYNTHETIC, USING AQUEOUS ALKALI SOLUTION OF CONTROLLED WATER CONTENT.
Inventors
- 👤 Cornelis Willem Fransen
- 👤 Daniel Marten Van Kampen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
C; C11; C11D; C11D13/00; C11D13/02
Claims Analysis
Total Claims: 0
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |