Patent US4692271B1 successfully refreshed from Google Patents.
US4692271B1
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Concentrated aqueous surfactant compositions
Assignee: Solvay Solutions UK Ltd
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Filing: 1980-07-24
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Granted: 1997-07-22
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Expires: 2000-07-24
Abstract
No abstract record available.
Inventors
- 👤 Edward T Messenger
- 👤 Douglas E Mather
- 👤 Brinley M Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/65; C11D1/652; C11D1/02; C11D1/37; C11D1/645; C11D1/66; C11D1/83; C11D1/835; C11D1/88; C11D1/94; C11D10/00; C11D10/04; C11D10/045; C11D17/00; C11D17/0008; C11D17/0026; C11D1/04; C11D1/10; C11D1/12; C11D1/123; C11D1/14; C11D1/146; C11D1/22; C11D1/28; C11D1/29; C11D1/34; C11D1/345; C11D1/52; C11D1/523; C11D1/528; C11D1/75; C11D1/90; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/90
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) | 2000-07-21 | 2001-01-20 | 2001-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-21 | 2005-01-20 | 2005-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-21 | 2009-01-20 | 2009-07-22 | $7700.00 | Window Closed / Lapsed |