US3725290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxyacetic acid compounds as builders for detergent compositions
Assignee: Stepan Co
•
Filing: 1972-05-12
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Granted: 1973-04-03
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Expires: 1992-05-12
Abstract
Abstract A PHOSPHATE-FREE BIODEGRADABLE DETERGENT BUILDER COMPATIBLE WITH VARIOUS SYNTHETIC DETERGENT AND SOAP FORMULATIONS TO PRODUCE GENERALLY NON-EUTROPHIC DETERGENT PRODUCTS. THE BUILDER IS A WATER-SOLUBLE SALT OF AN ALIPHATIC OXYHYDROCARBON CARBOXYLIC COMPOUND HAVING CARBOXYLIC RADICALS SEPARATED FROM INTERNAL OXYGEN ATOMS BY AT LEAST ONE UNSUBSTITUTED HYDROCARBON RADICAL. A PREFERRED BUILDER IS AN ALKYL METAL SALT OF TRIGLYCOLIC ACID AND THE BUILDERS OF THE INVENTION ARE COMBINABLE IN WEIGHT RATIOS WITH THE DETERGENT ACTIVE SURFACTANTS IN THE FORMULATIONS RANGING FROM ABOUT 20:1 TO ABOUT 1:10.
Inventors
- 👤 D Nelson
- 👤 E Knaggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2089
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |