US3697453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iminodisuccinic acid salts as detergent builders
Assignee: Pfizer Inc
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Filing: 1971-03-08
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Granted: 1972-10-10
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Expires: 1991-03-08
Abstract
Abstract THE WATER-SOLUBLE SALTS OF IMINODISUCCINIC ACID ARE USED AS DETERGENT BUILDERS IN CLEANING AND LAUNDERING COMPOSITIONS WITH AN ORGANIC WATER-SOLUBLE DETERGENT SURFACTANT SUCH AS ANIONIC, NONIONIC, ZWITTERIONIC, AND AMPHOTERIC DETERGENT SURFACTANTS OR MIXTURES THEREOF.
Inventors
- 👤 Bryce E Tate
- 👤 Rudolph G Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:19
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/33
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |