US4743447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for disinfecting contact lenses
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1987-04-23
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Granted: 1988-05-10
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Expires: 2007-04-23
Abstract
Abstract A disinfecting solution for contact lenses, both hard lenses and flexible lenses, comprising an aqueous solution of hydrogen peroxide and peracetic acid.
Inventors
- 👤 Daniel Le Rouzic
- 👤 Eric J. Laforte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:07
CPC Classifications
A; A61; A61L; A61L12/00; A61L12/08; A61L12/12; A61L12/124; A01; A01N; A01N59/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
44 words
A disinfecting composition for daily treatment of flexible contact lenses comprising a stable aqueous solution having equilibrium concentration of from about 0.01 to about 0.04 peracetic acid, from about 1 to about 3% by weight of hydrogen peroxide, and sufficient acetic acid for equilibrium.
Claim 2
Dependent Claim
44 words
A disinfecting composition for daily treatment of flexible contact lenses comprising a stable aqueous solution having equilibrium concentration of from about 0.01 to about 0.04 peracetic acid, from about 1 to about 3% by weight of hydrogen peroxide, and sufficient acetic acid for equilibrium.
Claim 3
Dependent Claim
25 words
The composition of claim 1, wherein the peracetic acid is present, at equilibrium in an amount ranging from about 0.01 to about 0.015% by weight.
Claim 4
Dependent Claim
33 words
The composition of claim 1, containing, at equilibrium, about 3% by weight of hydrogen peroxide, about 0.01% by weight of peracetic acid and sufficient acetic acid to maintain the equilibrium of the system.
Claim 5
Dependent Claim
19 words
The composition of claim 1, including, at equilibrium, from about 0.001 to 0.005% by weight of a non-ionic surfactant.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein the non-ionic surfactant is a polyethanoxyalkylether.
Claim 7
Independent Claim
69 words
A method of cleaning and sterilizing contact lenses, comprising contacting the lenses with an aqueous solution consisting essentially of, at equilibrium, from about 0.01 to about 0.04 peracetic acid, from about 1 to about 3% by weight of hydrogen peroxide, and sufficient acetic acid for equilibrium, for a period of from about two to five minutes, and rinsing the lenses with running water for up to about thirty seconds.
Claim 8
Independent Claim
69 words
A method of cleaning and sterilizing contact lenses, comprising contacting the lenses with an aqueous solution consisting essentially of, at equilibrium, from about 0.01 to about 0.04 peracetic acid, from about 1 to about 3% by weight of hydrogen peroxide, and sufficient acetic acid for equilibrium, for a period of from about two to five minutes, and rinsing the lenses with running water for up to about thirty seconds.
Claim 9
Dependent Claim
41 words
The composition of claim 1, consisting essentially of an aqueous solution consisting essentially of, at equilibrium, from about 0.01 to about 0.04 peracetic acid, from about 1 to about 3% by weight of hydrogen peroxide, and sufficient acetic acid for equilbrium.
Claim 10
Dependent Claim
25 words
The composition of claim 7, wherein the peracetic acid is present at equilibrium, in an amount ranging from about 0.01 to about 0.015% by weight.
Claim 11
Dependent Claim
29 words
The composition of claim 7, containing, at equilibrum, about 3% by weight of hydrogen peroxide, about 0.01% by weight of peracetic acid and sufficient acetic acid to maintain equilibrium.
Claim 12
Dependent Claim
19 words
The composition of claim 7, including, at equilibrium, from about 0.001 to 0.005% by weight of a non-ionic surfactant.
Claim 13
Dependent Claim
25 words
The method of claim 6, wherein the peracetic acid is present, at equilibrium, in an amount ranging from about 0.01 to about 0.015% by weight.
Claim 14
Dependent Claim
32 words
The method of claim 6, wherein the composition contains, at equilibrium, about 3% by weight of hydrogen peroxide, about 0.01% by weight of peracetic acid and sufficient acetic acid to maintain equilibrium.
Claim 15
Dependent Claim
22 words
The method of claim 6, wherein the composition includes, at equilibrium, from about 0.001 to 0.005% by weight of a non-ionic surfactant.
Claim 16
Dependent Claim
12 words
The method of claim 6, wherein the non-ionic surfactant is a polyethanoxyalkylether.
Claim 17
Dependent Claim
34 words
The composition of claim 7 consisting essentially of, at equilibrium, the following solution, by weight: Peracetic acid: 0.012-0.034% Acetic acid: 0.448-1.464% H 2 O 2 : 2.850-2.920% Ethoxylated decyl alcohol: 0.002-0.005% De-ionized water: 96.568-96.648%.
Claim 18
Dependent Claim
56 words
In a stable, aqueous contact lens cleaning solution comprising a non-ionic surfactant, the improvement wherein said cleaning solution further comprises a microbiocidal agent consisting essentially of equilibrium concentrations of from about 0.01 to about 0.04% peracetic acid, about 1 to about 3% hydrogen peroxide, and sufficient acetic acid for equilibrium, by weight of said cleaning solution.
Claim 19
Dependent Claim
56 words
In a stable, aqueous contact lens cleaning solution comprising a non-ionic surfactant, the improvement wherein said cleaning solution further comprises a microbiocidal agent consisting essentially of equilibrium concentrations of from about 0.01 to about 0.04% peracetic acid, about 1 to about 3% hydrogen peroxide, and sufficient acetic acid for equilibrium, by weight of said cleaning solution.
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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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |