Patent US4442842A successfully refreshed from Google Patents.
US4663233A
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US
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Lens with hydrophilic coating
Assignee: Universal High Technologies
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Filing: 1985-10-24
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Granted: 1987-05-05
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Expires: 2005-10-24
Abstract
Abstract Optical lenses, particularly spectacle, contact and intra-ocular lenses manufactured from glass or plastic. The lenses are provided with a hydrophilic coating which is immobilized upon the lens to provide permanent lubricity and uniform wetting characteristics.
Inventors
- 👤 Ellington M. Beavers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/28; A61L27/34; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/0077; A61F2002/0081; A61L2430/00; A61L2430/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31573
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
58 words
A lens with hydrophilic coating comprising: (a) a clear lens base; (b) a matrix in the form of an acrylic copolymer film cured by partial reaction with a polyisocyanate capable of reacting chemically also with a polysaccharide; and (c) a polysaccharide coating cross-linked by chemical reaction with said copolymer film so as to be substantially insoluble and immobile.
Claim 2
Dependent Claim
58 words
A lens with hydrophilic coating comprising: (a) a clear lens base; (b) a matrix in the form of an acrylic copolymer film cured by partial reaction with a polyisocyanate capable of reacting chemically also with a polysaccharide; and (c) a polysaccharide coating cross-linked by chemical reaction with said copolymer film so as to be substantially insoluble and immobile.
Claim 3
Dependent Claim
15 words
A lens with hydrophilic coating as in claim 1, wherein said lens base is plastic.
Claim 4
Dependent Claim
15 words
A lens with hydrophilic coating as in claim 1, wherein said lens base is glass.
Claim 5
Dependent Claim
18 words
A lens with hydrophilic coating as in claim 1, wherein said polysaccharide is a salt of hyaluronic acid.
Claim 6
Dependent Claim
14 words
A lens with hydrophilic coating as in claim 1, wherein said polysaccharide is agarose.
Claim 7
Dependent Claim
62 words
A lens with hydrophilic coating comprising: (a) a clear lens base; (b) a matrix affixed to said base in the form of a polymer film made from monomers including: (i) EMA/HEMA/MAA (ii) Desmodur N (iii) ethylene glycol monoethyl ether acetate (iv) Xylenes and (c) a polysaccharide cross-linked by chemical reaction with said polymer film so as to be substantially insoluble and immobile.
Claim 8
Dependent Claim
62 words
A lens with hydrophilic coating comprising: (a) a clear lens base; (b) a matrix affixed to said base in the form of a polymer film made from monomers including: (i) EMA/HEMA/MAA (ii) Desmodur N (iii) ethylene glycol monoethyl ether acetate (iv) Xylenes and (c) a polysaccharide cross-linked by chemical reaction with said polymer film so as to be substantially insoluble and immobile.
Claim 9
Dependent Claim
37 words
A lens with hydrophilic coating as in claim 6, wherein the monomers are in the following approximate proportions: ______________________________________
(i) EMA/HEMA/MAA 46.7
(ii) EMA/HEMA/MAA 18.3
(iii) Desmodur N 11.8
(iv) Methoxyethyl acetate
8.3
(v) Xylenes 14.8
______________________________________
Claim 10
Dependent Claim
78 words
A lens with hydrophilic coating comprising: (a) a clear plastic lens base; (b) a matrix affixed to said base in the form of an acrylic copolymer film, including: (i) a mix of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol (ii) Desmodur N (iii) Methoxyethyl acetate (iv) Xylenes and (c) a polysaccharide coating formed from 1% solids aqueous sodium hyaluranate cross-linked by chemical reaction with said acrylic copolymer film so as to be substantially insoluble and immoble.
Claim 11
Dependent Claim
78 words
A lens with hydrophilic coating comprising: (a) a clear plastic lens base; (b) a matrix affixed to said base in the form of an acrylic copolymer film, including: (i) a mix of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol (ii) Desmodur N (iii) Methoxyethyl acetate (iv) Xylenes and (c) a polysaccharide coating formed from 1% solids aqueous sodium hyaluranate cross-linked by chemical reaction with said acrylic copolymer film so as to be substantially insoluble and immoble.
Claim 12
Dependent Claim
44 words
A lens with hydrophilic coating as in claim 8, wherein the monomers are in the following approximate proportions: (i) a mix of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol 46.7 g. (ii) Desmodur N 11.8 (iii) Methoxyethyl acetate 8.3 (iv) Xylenes 14.8.
Claim 13
Dependent Claim
53 words
A lens with hydrophylic coating comprising: (a) a clear lens base; (b) a matrix in the form of an acrylic copolymer film affixed to said base and including: Ethyl methacrylate 273.8 g. Hydroxyethyl methacrylate 75.6 Methacrylic acid 0.7 t-Butyl peroctoate 1.1 Mercaptoethanol 0.42 and (c) a polysaccharide coating formed from 1% sodium hyaluronate.
Claim 14
Dependent Claim
53 words
A lens with hydrophylic coating comprising: (a) a clear lens base; (b) a matrix in the form of an acrylic copolymer film affixed to said base and including: Ethyl methacrylate 273.8 g. Hydroxyethyl methacrylate 75.6 Methacrylic acid 0.7 t-Butyl peroctoate 1.1 Mercaptoethanol 0.42 and (c) a polysaccharide coating formed from 1% sodium hyaluronate.
Claim 15
Dependent Claim
114 words
A lens with a hydrophilic coating comprising: (a) a clear glass lens base; (b) a matrix film affixed to said base in the form of: (i) 10 mil wet film of an epoxy resin and 5% benzyldimethylamine baked onto said plate; (ii) A mixture of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol 40 g. (iii) An acrylic copolymer containing hydroxyl groups 25 g. (iv) Desmodur N 35 g. (v) Propylene glycol monomethyl ether acetate (to dilute to 50% solids); and (c) a polysaccharide coating applied in the form of 1% aqueous solution of sodium hyaluronate and then cross-linked by chemical reaction with said matrix so as to be substantially insoluble and immobile.
Claim 16
Dependent Claim
114 words
A lens with a hydrophilic coating comprising: (a) a clear glass lens base; (b) a matrix film affixed to said base in the form of: (i) 10 mil wet film of an epoxy resin and 5% benzyldimethylamine baked onto said plate; (ii) A mixture of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol 40 g. (iii) An acrylic copolymer containing hydroxyl groups 25 g. (iv) Desmodur N 35 g. (v) Propylene glycol monomethyl ether acetate (to dilute to 50% solids); and (c) a polysaccharide coating applied in the form of 1% aqueous solution of sodium hyaluronate and then cross-linked by chemical reaction with said matrix so as to be substantially insoluble and immobile.
Claim 17
Dependent Claim
86 words
A lens with a hydrophilic coating as in claim 11, wherein the monomers are in the following approximate proportions: (i) 10 mil wet film of an epoxy resin and 5% benzyldimethylamine baked onto said lens; (ii) a mixture of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol 25 g. (iii) A mixture of: Ethyl methacrylate Hydroxyethyl methacrylate Methacrylic acid t-Butyl peroctoate Mercaptoethanol 15 g. (iv) Acryloid U-608S 25 g. (v) Desmodur N-3390 35 g. (vi) Propylene glycol monomethyl ether acetate (to dilute to 50% solids).
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |