Patent USRE32672E successfully refreshed from Google Patents.
USRE32672E
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US
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Method for simultaneously cleaning and disinfecting contact lenses using a mixture of peroxide and proteolytic enzyme
Assignee: Johnson and Johnson Surgical Vision Inc
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Filing: 1987-08-04
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Granted: 1988-05-24
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Expires: 2007-08-04
Abstract
Abstract A one step method for cleaning and disinfecting contact lenses is accomplished by immersing the lenses in a solution containing peroxide and a peroxide-active enzyme.
Inventors
- 👤 Stanley W. Huth
- 👤 Sam W. Lam
- 👤 Richard M. Kiral
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38609; A; A61; A61L; A61L12/00; A61L12/08; A61L12/12; A61L12/124; C11D3/0005; C11D3/0078; C11D3/39; C11D3/3942
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
A method for the simultaneous cleaning and disinfecting of contact lenses which method comprises contacting the lenses with a solution comprised of a disinfecting amount of peroxide and an effective amount of peroxide-active proteolytic enzyme for a time sufficient to remove substantially all protein accretions and to disinfect the lenses.
Claim 2
Independent Claim
50 words
A method for the simultaneous cleaning and disinfecting of contact lenses which method comprises contacting the lenses with a solution comprised of a disinfecting amount of peroxide and an effective amount of peroxide-active proteolytic enzyme for a time sufficient to remove substantially all protein accretions and to disinfect the lenses.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein the solution is prepared by combining the enzyme and peroxide at the time the lenses are contacted with the solution.
Claim 4
Dependent Claim
22 words
The method of claim 2 wherein the enzyme is in a powder or tablet form and is dissolved in the peroxide solution.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein the solution is prepared by dissolving a dry peroxide and dry enzyme in an aqueous solution.
Claim 6
Dependent Claim
15 words
The method of claim 4 wherein both components are combined in powder or tablet form.
Claim 7
Dependent Claim
37 words
The method of claim 2 wherein the enzyme is present in an amount between 0.001 and 5 Anson units and the peroxide is hydrogen peroxide and is present in an amount between 0.02 and 10% by weight/volume.
Claim 8
Dependent Claim
12 words
A method according to claim 6 where the proteolytic enzyme is subtilisin.
Claim 9
Dependent Claim
25 words
The method of claim 7 wherein the peroxide is hydrogen peroxide, sodium perborate, potassium persulfate, sodium percarbonate, diperisophthalic acid, peroxydiphosphate salts or sodium aluminum aminohydroperoxide.
Claim 10
Dependent Claim
21 words
The method of claim 8 where the .[.aqueous composition.]. .Iadd.solution .Iaddend.comprises 3% hydrogen peroxide and 0.30% subtilisin A by weight/volume. .Iadd.
Claim 11
Dependent Claim
108 words
The method of claim 1 wherein said contact lenses have a hydrophilic surface. .Iaddend. .Iadd.11. The method of claim 10 wherein said peroxide-active proteolytic enzyme is a subtilisin enzyme. .Iaddend. .Iadd.12. The method of claim 11 wherein said subtilisin enzyme is subtilisin A. .Iaddend. .Iadd.13. The method of claim 10 wherein said peroxide is hydrogen peroxide in an amount between 0.02 and 10% by weight/volume. .Iaddend. .Iadd.14. The method of claim 13 wherein said hydrogen peroxide is present in an amount of about 3% by weight/volume. .Iaddend. .Iadd.15. The method of claim 10 wherein said peroxide-active proteolytic enzyme is subtilisin A and said peroxide is hydrogen peroxide. .Iaddend.
References Cited (Backward Citations)
US3553139A
Cited
US3714050A
Cited
US3816319A
Cited
US3789001A
Cited
US3910296A
Cited
US3910296B1
Cited
JPS5064303A
Cited
US3908680A
Cited
DE2527534A1
Cited
GB1500707A
Cited
US4155868A
Cited
US4096870A
Cited
US4285738A
Cited
US4472550A
Cited
US4521254A
Cited
US4421668A
Cited
US4585488A
Cited
US4470919A
Cited
GB2129458A
Cited
US4521375A
Cited
GB2139260A
Cited
US4539132A
Cited
EP0140669A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |