US4404128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzyme detergent composition
Assignee: Procter and Gamble Co
•
Filing: 1981-05-29
•
Granted: 1983-09-13
•
Expires: 2001-05-29
Abstract
Abstract Detergent compositions comprise a detergent surfactant, a pure enzyme, preferably a proteolytic enzyme, and a mixture of aluminosilicate ion exchange material and water-soluble nitrilotriacetate to provide unobviously superior enzyme cleaning performance.
Inventors
- 👤 Barry J. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A detergent composition substantially free of phosphate materials comprising: (a) from about 5% to about 40% of a detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and cationic surfactants and mixtures thereof; (b) from about 0.005% to about 0.2% of pure proteolytic enzyme; (c) from about 10% to about 50% of a hydrated sodium Zeolite A; and (d) from about 5% to about 30% of a water-soluble nitrilotriacetate, the ratio of the hydrated sodium zeolite A to the water soluble nitrilotriacetate being from about 1:3 to about 3:1.
Claim 2
Dependent Claim
92 words
A detergent composition substantially free of phosphate materials comprising: (a) from about 5% to about 40% of a detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and cationic surfactants and mixtures thereof; (b) from about 0.005% to about 0.2% of pure proteolytic enzyme; (c) from about 10% to about 50% of a hydrated sodium Zeolite A; and (d) from about 5% to about 30% of a water-soluble nitrilotriacetate, the ratio of the hydrated sodium zeolite A to the water soluble nitrilotriacetate being from about 1:3 to about 3:1.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein said enzyme is at a level of from about 0.02% to about 0.09%.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein the said enzyme is at a level of from about 0.02% to about 0.09%.
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein the surfactant is from about 10% to about 20%, and the Zeolite A is from about 15% to about 25%.
Claim 6
Dependent Claim
34 words
The composition of claim 1 wherein the enzyme is present at from about 0.02% to about 0.09% and the ratio of the Zeolite A to the nitrilotriacetate is from about 1:3 to about 3:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |