Patent US4214915A successfully refreshed from Google Patents.
US4214915A
Expired / Lapsed
US
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Method and composition for cleaning ovens
Assignee: Colgate Palmolive Co
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Filing: 1978-08-07
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Granted: 1980-07-29
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Expires: 1998-08-07
Abstract
Abstract The oven cleaner composition includes from 1 to 2% by weight sodium bicarbonate and from 14 to 17% by weight potassium bicarbonate in an aqueous solution in which the weight ratio of sodium bicarbonate to potassium bicarbonate is from 1:7 to 1:17. The composition can be applied to the surface before and/or after soiling.
Inventors
- 👤 Alan Dillarstone
- 👤 Norman C. Lowe
- 👤 Edwin Cropper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:09
CPC Classifications
F; F24; F24C; F24C14/00; C; C11; C11D; C11D1/00; C11D1/88; C11D1/90; C11D17/00; C11D17/0043; C11D3/00; C11D3/0005; C11D3/0057; C11D3/02; C11D3/04; C11D3/10; F24C15/00; F24C15/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
A method of cleaning a surface which is subjected to heat and is soiled, or liable to soiling, by baked-on organic food deposits, which comprises applying to the surface, before and/or after the deposition of the deposits thereon, an aqueous solution of a mixture of 1 to 2% by weight sodium bicarbonate and 14 to 17% by weight potassium bicarbonate in a weight ratio of 1:7 to 1:17 respectively.
Claim 2
Independent Claim
69 words
A method of cleaning a surface which is subjected to heat and is soiled, or liable to soiling, by baked-on organic food deposits, which comprises applying to the surface, before and/or after the deposition of the deposits thereon, an aqueous solution of a mixture of 1 to 2% by weight sodium bicarbonate and 14 to 17% by weight potassium bicarbonate in a weight ratio of 1:7 to 1:17 respectively.
Claim 3
Dependent Claim
58 words
A composition for use in cleaning a surface which is subjected to heat and is soiled, or liable to soiling, by baked-on organic food deposits, which comprises an aqueous solution containing a mixture of 1 to 2% by weight sodium bicarbonate and 14 to 17% by weight potassium bicarbonate in a weight ratio of 1:7 to 1:17 respectively.
Claim 4
Dependent Claim
58 words
A composition for use in cleaning a surface which is subjected to heat and is soiled, or liable to soiling, by baked-on organic food deposits, which comprises an aqueous solution containing a mixture of 1 to 2% by weight sodium bicarbonate and 14 to 17% by weight potassium bicarbonate in a weight ratio of 1:7 to 1:17 respectively.
Claim 5
Dependent Claim
16 words
A method as set forth in claim 1 in which the weight ratio is approximately 1:11.
Claim 6
Dependent Claim
45 words
A method as set forth in claim 1 in which the solution is applied to a soiled surface which is at a temperature of approximately 200° F., the surface is then heated to approximately 475° F., allowed to cool, and the deposits then removed therefrom.
Claim 7
Dependent Claim
18 words
A method as set forth in claim 1 wherein the mixture includes a non-ionic, anionic or amphoteric surfactant.
Claim 8
Dependent Claim
15 words
A method as set forth in claim 1 wherein the mixture includes a thickening agent.
Claim 9
Dependent Claim
20 words
A composition as set forth in claim 2 in which the solution also contains an anionic, nonionic or amphoteric surfactant.
Claim 10
Dependent Claim
14 words
A composition as set forth in claim 2 which also includes a thickening agent.
Claim 11
Dependent Claim
25 words
A composition as set forth in claim 2 in which the solution contains sodium bicarbonate and potassium bicarbonate in a weight ratio of approximately 1:11.
Claim 12
Dependent Claim
28 words
A composition as set forth in claim 7 includes also a liquefied aerosol propellant and contained in a pressurized aerosol dispensing container fitted with a spray discharge valve.
Claim 13
Dependent Claim
20 words
A composition as set forth in claim 7 in which the solution contains an amphoteric surfactant of the formula: ##STR2##
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |