Patent US3689435A successfully refreshed from Google Patents.
US3689435A
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Detergency compositions containing a synergistic mixture of pvp and pva
Assignee: GAF Chemicals Corp
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Filing: 1970-07-27
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Granted: 1972-09-05
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Expires: 1990-07-27
Abstract
Abstract A SOIL, ANTI-REDEPOSITION AGENT FOR USE IN LAUNDRY APPLICATIONS IS DISCLOSED, WHICH AGENT COMPRISES A SYNERGISTIC MIXTURE OF POLYVINYLPYRROLIDONE AND POLYVINYL ALCOHOL.
Inventors
- 👤 Rene P Berni
- 👤 Richard A Grifo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:03
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3753; C11D3/3769; C11D3/3776
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |