Patent US4181622A successfully refreshed from Google Patents.
US4181622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning composition and method for removing marine accumulations from surfaces
Assignee: Individual
•
Filing: 1976-11-01
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Granted: 1980-01-01
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Expires: 1996-11-01
Abstract
Abstract This invention relates to a composition for removal of algae, marine residue, marine vegetation, and stains on surfaces and resulting from the immersion of such surfaces in natural bodies of water comprising from about 5 to 20 parts by weight of an acid selected from oxalic, citric, phosphoric, or mixtures thereof dissolved in a solution comprising from about 10 to 20 parts by weight of a C 1 to C 3 alkanol and 80 to 90 parts by weight of water and to the method of cleaning such surfaces utilizing said composition.
Inventors
- 👤 David C. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:20
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/265; C11D7/50; C11D7/5004; C11D7/5022
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
56 words
A composition for removal of marine accumulations and stains from surfaces consisting essentially of from about 5 to 20 parts by weight of oxalic acid dissolved in a solution comprising from about 10 to 20 parts by weight of a C 1 to C 3 alkanol and about 80 to 90 parts by weight of water.
Claim 2
Dependent Claim
56 words
A composition for removal of marine accumulations and stains from surfaces consisting essentially of from about 5 to 20 parts by weight of oxalic acid dissolved in a solution comprising from about 10 to 20 parts by weight of a C 1 to C 3 alkanol and about 80 to 90 parts by weight of water.
Claim 3
Dependent Claim
25 words
The composition of claim 1 including a gelling agent compatible with the other components of the composition in an amount sufficient to thicken the composition.
Claim 4
Dependent Claim
25 words
The composition of claim 2 wherein the alkanol is selected from methanol, ethanol, propanol, isopropanol, and mixtures thereof and the gelling agent is silicon dioxide.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein the alkanol is isopropanol.
Claim 6
Dependent Claim
58 words
A process for cleaning marine accumulations and stains from a surface comprising applying the composition of claim 1 to said surface and permitting it to remain thereon for a time sufficient to remove the stain and debond the marine accumulations from said surface, and then removing said composition from said surface together with the marine accumulations and stains.
Claim 7
Dependent Claim
28 words
The process of claim 5 wherein the composition includes a gelling agent compatible with the other components of the composition in an amount sufficient to thicken the composition.
Claim 8
Dependent Claim
28 words
The process of claim 6 wherein the alkanol in the composition is selected from methanol, ethanol, propanol, isopropanol, and mixtures thereof and the gelling agent is silicon dioxide.
Claim 9
Dependent Claim
26 words
The process of claim 5 wherein the acid in the composition is oxalic acid and the alkanol is isopropanol and the surface is a boat hull.
Claim 10
Dependent Claim
25 words
The process of claim 8 including a gelling agent compatible with the other components of the composition in an amount sufficient to thicken the composition.
Claim 11
Dependent Claim
46 words
A composition for removal of marine accumulations and stains from surfaces consisting of 5 to 20 parts by weight of oxalic acid dissolved in a solution comprising from about 10 to 20 parts by weight of isopropanol and about 80 to 90 parts by weight water.
Claim 12
Dependent Claim
46 words
A composition for removal of marine accumulations and stains from surfaces consisting of 5 to 20 parts by weight of oxalic acid dissolved in a solution comprising from about 10 to 20 parts by weight of isopropanol and about 80 to 90 parts by weight water.
Claim 13
Dependent Claim
16 words
The composition of claim 10 including a gelling agent compatible with oxalic acid, isopropanol and water.
Claim 14
Dependent Claim
12 words
The composition of claim 10 wherein the gelling agent is silicon dioxide.
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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) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |