US5240633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid automatic dishwashing composition containing enzymes
Assignee: Colgate Palmolive Co
•
Filing: 1991-05-31
•
Granted: 1993-08-31
•
Expires: 2011-05-31
Abstract
Abstract Nonaqueous liquid automatic dishwashing compositions containing a binary mixture of Protein Engineered Maxacal (Maxapem 15 and Maxapem 42), enzyme and Maxamyl enzyme have been found to be very useful in the removal of protein and carbohydrate soils from dishware at operating temperatures of about 100° F. to about 140° F.
Inventors
- 👤 Fahim U. Ahmed
- 👤 Patrick Durbut
- 👤 Julien Drapier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:39
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38627; C11D17/00; C11D17/0004; C11D3/02; C11D3/04; C11D3/08; C11D3/38618
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A liquid dishwashing composition comprising by weight; (a) 2 to 12% of a liquid nonionic surfactant; (b) 25 to 45% of a nonaqueous liquid carrier material; (c) 20 to 40% of an alkali metal phosphate; (d) 0 to 1.5% of an anti foaming agent; (e) 0.5 to 12% of a protease enzyme; (f) 0.3 to 6.0% of an amylase enzyme; (g) 3.0 to 15% of an alkali metal silicate; and (h) 0.5 to 7.0% of a finely divided silica stabilizing system, wherein a 1.0 wt. % solution of said composition has a pH of less than about 10.5 and said composition has less than 6.0 wt. percent of water.
Claim 2
Dependent Claim
109 words
A liquid dishwashing composition comprising by weight; (a) 2 to 12% of a liquid nonionic surfactant; (b) 25 to 45% of a nonaqueous liquid carrier material; (c) 20 to 40% of an alkali metal phosphate; (d) 0 to 1.5% of an anti foaming agent; (e) 0.5 to 12% of a protease enzyme; (f) 0.3 to 6.0% of an amylase enzyme; (g) 3.0 to 15% of an alkali metal silicate; and (h) 0.5 to 7.0% of a finely divided silica stabilizing system, wherein a 1.0 wt. % solution of said composition has a pH of less than about 10.5 and said composition has less than 6.0 wt. percent of water.
Claim 3
Independent Claim
149 words
A method of cleaning dishes, glasses, cups and eating utensils in an automatic dishwashing machine at a wash temperature of about 40° C. to about 65° C. which comprises adding to the wash water in said dishwashing machine, a liquid detergent dishwashing composition which comprises by weight; (a) 2 to 12% of a liquid nonionic surfactant; (b) 25 to 45% of a non aqueous liquid carrier material; (c) 20 to 40% of an alkali metal phosphate; (d) 0 to 1.5% of an antifoaming agent; (e) 0.5 to 12% of a protease enzyme; (f) 0.3 to 6.0% of an amylase enzyme; (g) 3 to 15% of an alkali metal silicate; and (h) 0.5 to 7.0% of a finely divided silica stabilizing system, wherein a 1.0 wt. % solution of the composition has a pH of less than about 10.5 and said composition has less than 6.0 wt. percent of water.
Claim 4
Independent Claim
149 words
A method of cleaning dishes, glasses, cups and eating utensils in an automatic dishwashing machine at a wash temperature of about 40° C. to about 65° C. which comprises adding to the wash water in said dishwashing machine, a liquid detergent dishwashing composition which comprises by weight; (a) 2 to 12% of a liquid nonionic surfactant; (b) 25 to 45% of a non aqueous liquid carrier material; (c) 20 to 40% of an alkali metal phosphate; (d) 0 to 1.5% of an antifoaming agent; (e) 0.5 to 12% of a protease enzyme; (f) 0.3 to 6.0% of an amylase enzyme; (g) 3 to 15% of an alkali metal silicate; and (h) 0.5 to 7.0% of a finely divided silica stabilizing system, wherein a 1.0 wt. % solution of the composition has a pH of less than about 10.5 and said composition has less than 6.0 wt. percent of water.
Claim 5
Dependent Claim
39 words
A method according to claim 2 wherein said dishwashing composition contains in slurry form about 0.5 to about 8.0 percent by weight of said protease enzyme and about 0.3 to about 6.0 percent by weight of said amylase enzyme.
Claim 6
Dependent Claim
15 words
A method according to claim 2 wherein said dishwashing composition further contains a lipase enzyme.
Claim 7
Dependent Claim
22 words
The method according to claim 4 wherein said dishwashing composition includes about 0 to 2.0 percent by weight of an anti-foaming agent.
Claim 8
Dependent Claim
21 words
The method according to claim 1 wherein said dishwashing composition includes about 0 to 8.0 weight percent of a lipase enzyme.
Claim 9
Dependent Claim
16 words
The method according to claim 5 wherein said dishwashing composition contains an alkali metal perborate bleach.
Claim 10
Dependent Claim
14 words
The method according to claim 7 wherein said dishwashing composition contains a bleach activator.
Claim 11
Dependent Claim
24 words
The method according to claim 3, wherein a weight ratio of the protease enzyme to the amylase enzyme is about 6:1 to about 1:1.
Claim 12
Dependent Claim
39 words
The nonaqueous liquid dishwashing composition according to claim 1 wherein said dishwashing composition contains in slurry form about 0.5 to 8.0 percent by weight of said protease enzyme and about 0.3 to 6.0 weight percent of said amylase enzyme.
Claim 13
Dependent Claim
18 words
The nonaqueous liquid dishwashing composition according to claim 10 wherein said dishwashing composition further contains a lipase enzyme.
Claim 14
Dependent Claim
21 words
The nonaqueous liquid dishwashing composition according to claim 1 which includes about 0 to 8.0 weight percent of a lipase enzyme.
Claim 15
Dependent Claim
15 words
The nonaqueous liquid dishwashing composition according to claim 1 which contains an alkali metal perborate.
Claim 16
Dependent Claim
16 words
The nonaqueous liquid dishwashing composition according to claim 13 which contains an alkali metal perborate activator.
Claim 17
Dependent Claim
49 words
The nonaqueous liquid dishwashing composition according to claim 1, wherein said protease enzyme is a highly alkaline mutant derivative of Bacillus alcalophylus protease enzyme and said amylase enzyme is Maxamyl amylase enzyme, a weight ratio of said protease enzyme to said amylase enzyme being about 6:1 to about 1.1:1.
References Cited (Backward Citations)
US4162987A
Cited
US4501681A
Cited
US4568476A
Cited
US4620936A
Cited
US4900475A
Cited
US4753748A
Cited
US4810413A
Cited
US4931195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-30 | 1997-03-01 | 1997-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-30 | 2001-03-01 | 2001-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-30 | 2005-03-01 | 2005-08-31 | $7700.00 | Window Closed / Lapsed |