Patent US4388229A successfully refreshed from Google Patents.
US4388229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens rejuvenating solution
Assignee: Syntex USA LLC
•
Filing: 1981-11-02
•
Granted: 1983-06-14
•
Expires: 2001-11-02
Abstract
Abstract A solution for removing occluded and adsorbed chemicals, such as cationic preservating agents, anionic preserving agents and mixtures thereof, from contact lenses which comprises a nonionic surfactant; a cationic ion exchange resin, an anionic ion exchange resin, or mixtures thereof; water; and optionally sodium chloride. Such solutions are useful to reduce and prevent irritation of the eye of the contact lens wearer.
Inventors
- 👤 Cherng-Chyi Fu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; A; A61; A61L; A61L12/00; A61L12/08; C11D1/00; C11D1/66; C11D1/74; C11D3/0005; C11D3/0078; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3773; C11D3/378
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
57 words
An aqueous contact lens solution for removing adsorbed and occluded chemical and biological agents from a contact lens in need of rejuvenation which comprises: (a) a nonionic surfactant; (b) (i) a cationic ion exchange resin, (ii) an anionic ion exchange resin or (iii) mixtures of (i) and (ii); (c) water; and optionally (d) an ophthalmologically suitable salt.
Claim 2
Dependent Claim
57 words
An aqueous contact lens solution for removing adsorbed and occluded chemical and biological agents from a contact lens in need of rejuvenation which comprises: (a) a nonionic surfactant; (b) (i) a cationic ion exchange resin, (ii) an anionic ion exchange resin or (iii) mixtures of (i) and (ii); (c) water; and optionally (d) an ophthalmologically suitable salt.
Claim 3
Dependent Claim
18 words
The contact lens solution of claim 1 wherein said ion exchange resin is a cationic ion exchange resin.
Claim 4
Dependent Claim
21 words
The contact lens solution of claim 2 wherein said suitable salt comprises an alkali metal or alkaline earth metal halide salt.
Claim 5
Dependent Claim
32 words
The contact lens solution of claim 3 wherein said alkali metal halide salt is selected from the group consisting of sodium chloride, sodium bromide, potassium chloride, and potassium bromide and mixtures thereof.
Claim 6
Dependent Claim
22 words
The contact lens solution of claim 2 wherein said salt is present in an amount of 0.1 to 10 percent by weight.
Claim 7
Dependent Claim
19 words
The contact lens solution of claim 5 wherein said salt comprises about 0.9 percent by weight of sodium chloride.
Claim 8
Dependent Claim
57 words
The contact lens solution of claim 2 wherein (a) said surfactant is present in an amount of about 0.1 to 10 percent by weight; (b) said resin is present in an amount of about 0.1 to 50 percent by weight; and P1 (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 9
Dependent Claim
43 words
The contact lens solution of of claim 2 wherein (a) said surfactant is a polyoxyethylenated long-chain carboxylic acid ester of sorbitol, sorbitan or sorbide, or mixtures of said esters; and (b) said resin is a nuclear sulfonated copolymer comprised of styrene and divinylbenzene.
Claim 10
Dependent Claim
46 words
The contact lens solution of claim 2 wherein (a) said surfactant is a polyoxyethylenated sorbitan monolaurate containing about twenty moles of ethylene oxide; and (b) said resin is a nuclear sulfonated copolymer of about 92 percent styrene and other monovinyl monomers, and about 8 percent divinylbenzene.
Claim 11
Dependent Claim
49 words
The contact lens solution of claim 2 wherein (a) said surfactant is present in about 0.5 to 5 percent by weight; (b) said resin is present in about 1 to 20 percent by weight; and (c) in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 12
Dependent Claim
50 words
The contact lens solution of claim 2 wherein (a) said surfactant is present in about 1 to 3 percent by weight; (b) said resin is present in about 5 to 15 percent by weight; and (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 13
Dependent Claim
67 words
The contact lens solution of claim 10 wherein (a) said surfactant is a polyoxyethylenated sorbitan monolaurate containing about twenty moles of ethylene oxide which is present in about 2 percent by weight; and (b) said resin is a nuclear sulfonated copolymer of about 92 percent styrene and other monovinyl monomers and about 8 percent divinyl benzene which is present in an amount of about 10% by weight.
Claim 14
Dependent Claim
24 words
The process of rejuvenating a contact lens which comprises contacting a lens in need of rejuvenating with the contact lens solution of claim 2.
Claim 15
Dependent Claim
37 words
The process for preparing the contact lens solution of claim 2 which comprises: (a) mixing said surfactant with said resin(s) at ambient temperature; and (b) diluting said mixture to the desired concentration by the addition of water.
Claim 16
Dependent Claim
41 words
The process for preparing the contact lens solution of claim 2 which comprises: (a) mixing said surfactant with said resin(s) at ambient temperature; and (b) diluting said mixture to the desired final concentration by the addition of a sodium chloride solution.
Claim 17
Dependent Claim
18 words
The contact lens solution of claim 1 wherein said ion exchange resin is an anionic ion exchange resin.
Claim 18
Dependent Claim
22 words
The contact lens solution of claim 16, wherein said salt is present in an amount of 0.1 to 10 percent by weight.
Claim 19
Dependent Claim
18 words
The contact lens solution of claim 17, said salt comprises about 0.9 percent by weight of sodium chloride.
Claim 20
Dependent Claim
22 words
The contact lens solution of claim 16 wherein said ophthalmologically suitable salt comprises an alkali metal or alkaline earth metal halide salt.
Claim 21
Dependent Claim
32 words
The contact lens solution of claim 19 wherein said alkali metal halide salt is selected from the group consisting of sodium chloride, sodium bromide, potassium chloride, and potassium bromide and mixtures thereof.
Claim 22
Dependent Claim
56 words
The contact lens solution of claim 16 wherein (a) said surfactant is present in an amount of about 0.1 to 10 percent by weight; (b) said resin is present in an amount of about 0.1 to 50 percent by weight; and (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 23
Dependent Claim
42 words
The contact lens solution of claim 16 wherein (a) said surfactant is a polyoxyethylenated long-chain carboxylic acid ester of sorbitol, sorbitan or, sorbide, or mixtures of said esters; and (b) said resin is a trimethylbenzyl ammonium substituted copolymer of styrene and divinylbenzene.
Claim 24
Dependent Claim
47 words
The contact lens solution of claim 16 wherein (a) said surfactant is a polyoxyethylenated sorbitan monolaurate containing about twenty moles of ethylene oxide; and (b) said resin is a trimethylbenzyl ammonium substituted copolymer of about 92 percent styrene and other monovinyl monomers, and about 8 percent divinylbenzene.
Claim 25
Dependent Claim
50 words
The contact lens solution of claim 16 wherein (a) said surfactant is present in about 0.5 to 5 percent by weight; (b) said resin is present in about 1 to 20 percent by weight; and (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 26
Dependent Claim
50 words
The contact lens solution of claim 16 wherein (a) said surfactant is present in about 1 to 3 percent by weight; (b) said resin is present in about 5 to 15 percent by weight; and (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 27
Dependent Claim
23 words
The process of rejuvenating a lens which comprises contacting a lens in need of rejuvenating with the contact lens solution of claim 16.
Claim 28
Dependent Claim
38 words
The process for preparing the contact lens solution of claim 16 which comprises: (a) mixing said surfactant with said resin at ambient temperature; and (b) diluting said mixture to the desired final concentration by the addition of water.
Claim 29
Dependent Claim
41 words
The process for preparing the contact lens solution of claim 16 which comprises: (a) mixing said surfactant with said resin at ambient temperatures; and (b) diluting said mixture to the desired final concentration by the addition of a sodium chloride solution.
Claim 30
Dependent Claim
22 words
The contact lens solution of claim 1 wherein said ion exchange resin is a mixture of anionic and cationic ion exchange resins.
Claim 31
Dependent Claim
22 words
The contact lens solution of claim 29 wherein said ophthalmologically suitable salt comprises an alkali metal or alkaline earth metal halide salt.
Claim 32
Dependent Claim
31 words
The contact lens solution of claim 30 wherein said alkali metal halide salt is selected from the group consisting of sodium chloride, sodium bromide, potassium chloride, potassium bromide and mixtures thereof.
Claim 33
Dependent Claim
22 words
The contact lens solution of claim 29 wherein said salt is present in an amount of 0.1 to 10 percent by weight.
Claim 34
Dependent Claim
19 words
The contact lens solution of claim 32 wherein said salt comprises about 0.9 percent by weight of sodium chloride.
Claim 35
Dependent Claim
56 words
The contact lens solution of claim 29 wherein (a) said surfactant is present in an amount of about 0.1 to 10 percent by weight; (b) said resins are present in an amount of 0.1 to 50 percent by weight; and (c) is water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 36
Dependent Claim
59 words
The contact lens solution of claim 29 wherein (a) said surfactant is a polyoxyethylenated long-chain carboxylic acid ester of sorbitol, sorbitan, sorbide, or mixtures of said esters; (b) said cationic ion exchange resin is a nuclear sulfonated copolymer comprised of styrene and divinylbenzene, and (c) said anionic ion exchange resin is a trimethylbenzylammonium substituted copolymer of styrene and divinylbenzene.
Claim 37
Dependent Claim
74 words
The contact lens solution of claim 29 wherein (a) said surfactant is a polyoxyethylenated sorbitan monolaurate containing about twenty moles of ethylene oxide; (b) said cationic resin is a nuclear sulfonated copolymer of about 92 percent styrene and other monovinyl monomers, and about 8 percent divinylbenzene; and (c) said anionic ion exchange resin is a trimethyl benzylammonium substituted copolymer of about 92 percent styrene and other monovelent monomers, and about 8 percent divinyl benzene.
Claim 38
Dependent Claim
23 words
The process of rejuvenating a lens which comprises contacting a lens in need of rejuvenating with the contact lens solution of claim 29.
Claim 39
Dependent Claim
56 words
The contact lens solution of claim 29 wherein (a) said surfactant is present in an amount of about 0.5 to 5 percent by weight; (b) said resins are present in an amount of about 1 to 20 percent by weight; and (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 40
Dependent Claim
55 words
The contact lens solution of claim 29 wherein (a) said surfactant is present in an amount of about 1 to 3 percent by weight; (b) said resins are present in an amount of about 5 to 15 percent by weight; (c) water in a quantity sufficient to bring the solution to 100 percent by weight.
Claim 41
Dependent Claim
38 words
The process for preparing the contact lens solution of claim 29 which comprises: (a) mixing said surfactant with said resins at ambient temperature; and (b) diluting said mixture to the desired final concentration by the addition of water.
Claim 42
Dependent Claim
41 words
The process for preparing the contact lens solution of claim 29 which comprises: (a) mixing said surfactant with said resins at ambient temperatures; and (b) diluting said mixture to the desired final concentration by the addition of a sodium chloride solution.
References Cited (Backward Citations)
US2684321A
Cited
US2855371A
Cited
US3024207A
Cited
US3171752A
Cited
US3954644A
Cited
US3888782A
Cited
US4152283A
Cited
US4280920A
Cited
US4200695A
Cited
US4347328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |