US4997626A
Expired / Lapsed
US
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Methods to disinfect contact lenses
Assignee: Allergan Inc
•
Filing: 1990-01-05
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Granted: 1991-03-05
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Expires: 2010-01-05
Abstract
Abstract A method for disinfecting a contact lens is disclosed. This method comprises contacting a contact lens to be disinfected in a liquid medium with chlorine dioxide present in an amount effective to disinfect the contact lens to be disinfected.
Inventors
- 👤 Anthony J. Dziabo
- 👤 Hampar Karageozian
- 👤 Paul S. Ripley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:22
CPC Classifications
A; A61; A61L; A61L12/00; A61L12/08; A61L12/10; A61L12/102; C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0078; C11D3/16; C11D3/34; C11D3/3427; Y; Y10; Y10S; Y10S204/00; Y10S204/06
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
46 words
A method for disinfecting a contact lens which comprises: contacting a contact lens in a liquid medium with chlorine dioxide present in an amount as other than a chlorine dioxide precursor liquid medium being substantially free of quaternary ammonium salts and positively charged, nitrogen-containing cationic polymers.
Claim 2
Independent Claim
46 words
A method for disinfecting a contact lens which comprises: contacting a contact lens in a liquid medium with chlorine dioxide present in an amount as other than a chlorine dioxide precursor liquid medium being substantially free of quaternary ammonium salts and positively charged, nitrogen-containing cationic polymers.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said liquid medium includes at least one buffer component.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein said liquid medium is an aqueous liquid medium which is substantially free of antimicrobial agent other than chlorine dioxide and one or more precursors of chlorine dioxide.
Claim 5
Dependent Claim
23 words
The method of claim 3 wherein said contacting occurs at a temperature in the range of about 0° C. to about 100° C.
Claim 6
Dependent Claim
23 words
The method of claim 3 wherein said contacting occurs for a time in the range of about 1 minute to about 12 hours.
Claim 7
Dependent Claim
42 words
The method of claim 1 which further comprises contacting said contact lens with at least one enzyme capable of removing debris from a contact lens in an amount effective to substantially remove at least one type of debris from said contact lens.
Claim 8
Dependent Claim
26 words
The method of claim 6 wherein each of said at least one enzyme is selected from the group consisting of proteolytic enzymes, lipases and mixtures thereof.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein each of said at least one enzyme is selected from the group consisting of carbohydrate-active enzymes and mixtures thereof.
Claim 10
Dependent Claim
26 words
The method of claim 6 wherein each of said at least one enzyme is selected from the group consisting of proteases, amylases, lipases and mixtures thereof.
Claim 11
Independent Claim
85 words
A method for disinfecting a contact lens which comprises: contacting a contact lens in a liquid medium with chlorine dioxide present in an amount effective to disinfect said contact lens, said chlorine dioxide being derived from at least one chlorine dioxide precursor present in said liquid medium prior to said contacting which precursor is activated other than by the presence of said contact lens to produce said chlorine dioxide, said liquid medium being substantially free of quaternary ammonium salts and positively charged, nitrogen-containing cationic polymers.
Claim 12
Independent Claim
85 words
A method for disinfecting a contact lens which comprises: contacting a contact lens in a liquid medium with chlorine dioxide present in an amount effective to disinfect said contact lens, said chlorine dioxide being derived from at least one chlorine dioxide precursor present in said liquid medium prior to said contacting which precursor is activated other than by the presence of said contact lens to produce said chlorine dioxide, said liquid medium being substantially free of quaternary ammonium salts and positively charged, nitrogen-containing cationic polymers.
Claim 13
Dependent Claim
15 words
The method of claim 10 wherein said liquid medium includes at least one buffer component.
Claim 14
Dependent Claim
14 words
The method of claim 10 wherein said chlorine dioxide precursor is stabilized chlorine dioxide.
Claim 15
Dependent Claim
23 words
The method of claim 10 wherein said chlorine dioxide precursor is selected from the group consisting of chlorine dioxide-containing complexes and mixtures thereof.
Claim 16
Dependent Claim
32 words
The method of claim 10 wherein said chlorine dioxide precursor is selected from the group consisting of complexes of chlorine dioxide and carbonate, complexes of chlorine dioxide and bicarbonate and mixtures thereof.
Claim 17
Dependent Claim
22 words
The method of claim 10 wherein said chlorine dioxide precursor is selected from the group consisting of chlorite-containing components and mixtures thereof.
Claim 18
Dependent Claim
26 words
The method of claim 10 wherein said chlorine dioxide precursor includes a functionality selected from the group consisting of carbonate, borate, sulfate, phosphate and mixtures thereof.
Claim 19
Dependent Claim
33 words
The method of claim 10 wherein said liquid medium is an aqueous liquid medium which is substantially free of antimicrobial agent other than chlorine dioxide and one or more precursors of chlorine dioxide.
Claim 20
Dependent Claim
23 words
The method of claim 11 wherein said contacting occurs at a temperature in the range of about 0° C. to about 100° C.
Claim 21
Dependent Claim
23 words
The method of claim 17 wherein said contacting occurs for a time in the range of about 1 minute to about 12 hours.
Claim 22
Dependent Claim
42 words
The method of claim 10 which further comprises contacting said contact lens with at least one enzyme capable of removing debris from a contact lens in an amount effective to substantially remove at least one type of debris from said contact lens.
Claim 23
Dependent Claim
24 words
The method of claim 20 wherein each of said at least one enzyme is selected from the group consisting of proteolytic enzymes, lipases and
Claim 24
Dependent Claim
25 words
The method of claim 20 wherein each of said at least one enzyme is selected from the group consisting of carbohydrate-active enzymes and mixtures thereof.
Claim 25
Dependent Claim
26 words
The method of claim 20 wherein each of said at least one enzyme is selected from the group consisting of proteases, amylases, lipases and mixtures thereof.
Claim 26
Dependent Claim
48 words
The method of claim 10 wherein prior to said contacting with chlorine dioxide said contact lens is contacted with at least one enzyme capable of removing debris from a contact lens in an amount effective to substantially remove at least one type of debris from said contact lens.
Claim 27
Dependent Claim
26 words
The method of claim 24 wherein each of said at least one enzyme is selected from the group consisting of proteolytic enzymes, lipases and mixtures thereof.
Claim 28
Dependent Claim
25 words
The method of claim 24 wherein each of said at least one enzyme is selected from the group consisting of carbohydrate-active enzymes and mixtures thereof.
Claim 29
Dependent Claim
26 words
The method of claim 24 wherein each of said at least one enzyme is selected from the group consisting of proteases, amylases, lipases and mixtures thereof.
Claim 30
Dependent Claim
24 words
The method of claim 24 wherein each of said at least one enzyme contacting occurs in a liquid medium including said chlorine dioxide precursor.
Claim 31
Dependent Claim
26 words
The method of claim 24 wherein said at least one enzyme contacting occurs in a liquid medium in the substantial absence of said chlorine dioxide precursor.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |